Wildfire smoke EPA monitor flag
Daily PM2.5 peaked at 137.3 µg/m³ near Tampa across 13 covered metros home to 29 million people. 4 metros recorded their worst day on record; 9 placed a top-ten day.
Counting the extra PM2.5 above each metro's typical day, this event handed the average affected resident ≈ 6.6 cigarettes. Across everyone living in the affected metros, that is the collective equivalent of ≈ 192 million cigarettes. An awareness illustration of outdoor exposure at 22 µg/m³ per cigarette (Berkeley Earth), counting only the event's ranked days; not a medical dose.
Why we think this happened
Supporting records describe regional smoke transport from Georgia-Florida fires, with the official Georgia assessment identifying Ware County and northern Florida fires as contributors during this May-to-early-June episode. Supporting records describe regional smoke transport from Georgia-Florida fires, with the official Georgia assessment identifyin
EPA monitor flag EPA attached an exceptional-event qualifier to the affected samples. The agency flagged the measurement itself; no separate agency record describes the event.
U.S. EPA Air Quality System and the submitting air monitoring agency · May 9, 2007 official
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-09, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
U.S. EPA Air Quality System and the submitting air monitoring agency · May 10, 2007 official
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-10, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
U.S. EPA Air Quality System and the submitting air monitoring agency · May 9, 2007 official
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-09, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
See every retained source and limitation ↓
Sequence: Tampa (May 8) → Deltona (May 9) → Orlando (May 9) → Jacksonville (May 9) → Palm Bay (May 9) → Miami (May 11) → Lakeland (May 12) → Cape Coral (May 12) → North Port (May 12) → Atlanta (May 22) → +3 more metros
Evidence path
A cause is more convincing when the record connects three things: something happened, the air mass moved toward the region, and local instruments responded. Here is how much of that chain is documented for this event.
Source or mechanism
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-09, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official…
View supporting source ↗Air-mass movement
The NASA MODIS report states that fires on May 8 produced thick smoke plumes that flowed south and west over the Gulf of Mexico, corroborating regional smoke transport during the candidate period.
View transport source ↗Local response
Contemporaneous AP photo reporting states that haze and a burning smell affected Florida and southeastern Georgia amid the state-line wildfire, corroborating smoke conditions during the event.
Inspect the pollutant and weather signals ↓Event autopsy
Before, during, and after the episode: nearby pollutant monitors and surface-weather stations show what changed. This context tests the “Wildfire smoke” explanation; it does not assign the cause by itself.
Tampa-St. Petersburg-Clearwater, FL
Monitor comparison window 2007-05-08 to 2007-05-16 · PM2.5 target: USMC Reserve Center (Gandy)
116% above nearby days
30% lower than surrounding days
112% higher than surrounding days
116% higher than surrounding days
112% higher than surrounding days
30% higher than surrounding days
About the same as surrounding days
About the same as surrounding days
About the same as surrounding days
About the same as surrounding days
About the same as surrounding days
30% lower than surrounding days
Deltona-Daytona Beach-Ormond Beach, FL
Monitor comparison window 2007-05-05 to 2007-05-13 · PM2.5 target: DAYTONA BLIND SERVICES
78% above nearby days
78% higher than surrounding days
8% higher than surrounding days
Jacksonville, FL
Monitor comparison window 2007-05-05 to 2007-05-13 · PM2.5 target: Mandarin
123% above nearby days
32% higher than surrounding days
123% higher than surrounding days
32% higher than surrounding days
23% lower than surrounding days
16% lower than surrounding days
About the same as surrounding days
Palm Bay-Melbourne-Titusville, FL
Monitor comparison window 2007-05-05 to 2007-05-13
28% above nearby days
52% higher than surrounding days
28% higher than surrounding days
52% higher than surrounding days
175% higher than surrounding days
6% higher than surrounding days
Orlando-Kissimmee-Sanford, FL
Monitor comparison window 2007-05-05 to 2007-05-13
105% above nearby days
96% higher than surrounding days
105% higher than surrounding days
96% higher than surrounding days
38% higher than surrounding days
81% higher than surrounding days
541% higher than surrounding days
5% higher than surrounding days
Atlanta-Sandy Springs-Roswell, GA
Monitor comparison window 2007-05-19 to 2007-05-26 · PM2.5 target: McDonough
168% above nearby days
127% higher than surrounding days
168% higher than surrounding days
127% higher than surrounding days
20% higher than surrounding days
10% higher than surrounding days
17% higher than surrounding days
23% higher than surrounding days
About the same as surrounding days
About the same as surrounding days
About the same as surrounding days
Birmingham-Hoover, AL
Monitor comparison window 2007-05-19 to 2007-05-26
81% above nearby days
22% higher than surrounding days
81% higher than surrounding days
22% higher than surrounding days
About the same as surrounding days
24% lower than surrounding days
11% higher than surrounding days
Chattanooga, TN-GA
Monitor comparison window 2007-05-24 to 2007-05-30 · PM2.5 target: EAST RIDGE CITY HALL
109% above nearby days
109% higher than surrounding days
10% higher than surrounding days
Nashville-Davidson--Murfreesboro--Franklin, TN
Monitor comparison window 2007-05-27 to 2007-06-04
0% above nearby days
No adjacent-day comparison
About the same as surrounding days
No adjacent-day comparison
18% higher than surrounding days
36% higher than surrounding days
8% higher than surrounding days
About the same as surrounding days
Miami-Fort Lauderdale-West Palm Beach, FL
Monitor comparison window 2007-05-08 to 2007-05-16 · PM2.5 target: Belle Glade
22% above nearby days
About the same as surrounding days
11% higher than surrounding days
22% higher than surrounding days
11% higher than surrounding days
23% higher than surrounding days
About the same as surrounding days
Adjacent observations available
16% higher than surrounding days
About the same as surrounding days
About the same as surrounding days
About the same as surrounding days
Cape Coral-Fort Myers, FL
Monitor comparison window 2007-05-08 to 2007-05-16 · PM2.5 target: Winkler Pump Station
298% above nearby days
45% higher than surrounding days
298% higher than surrounding days
45% higher than surrounding days
6% higher than surrounding days
Lakeland-Winter Haven, FL
Monitor comparison window 2007-05-08 to 2007-05-16 · PM2.5 target: Baptist Childrens' Home
224% above nearby days
41% higher than surrounding days
224% higher than surrounding days
41% higher than surrounding days
About the same as surrounding days
North Port-Sarasota-Bradenton, FL
Monitor comparison window 2007-05-08 to 2007-05-16 · PM2.5 target: Bee Ridge Park
215% above nearby days
20% higher than surrounding days
215% higher than surrounding days
20% higher than surrounding days
11% higher than surrounding days
18% lower than surrounding days
About the same as surrounding days
About the same as surrounding days
Source: U.S. EPA AirData daily observations and, where available, nearby ASOS/AWOS surface observations. Values are descriptive medians over the retained monitor set; missing measurements remain missing. Transport and source evidence remain separate layers because this instrument pattern does not assign a cause by itself.
Episode peak
-- cigarettes
The smoke map's scale, replayed over this event: the surface interpolates between covered metros' daily records, framed to the affected region. Hover for a reading, click a metro to pin it to the card. Days a monitor did not report draw nothing.
Views from the selected metro
Select a metro on the map to see nearby cameras. Where an operator archive reaches the event, drag the divider to compare two moments, adjust either date and time, or play the available event-day frames. Camera imagery is visual context, not an air-quality measurement or proof of smoke.
No useful public camera views are currently available within 80 km of this metro.
| Metro | Peak PM2.5 | Cigarettes, whole event | Peak day | All-time standing |
|---|---|---|---|---|
| Tampa-St. Petersburg-Clearwater, FL | 137.3 µg/m³ | 13.8 | May 11, 2007 | Worst day on record |
| Deltona-Daytona Beach-Ormond Beach, FL | 114.3 µg/m³ | 6.5 | May 9, 2007 | Worst day on record |
| Orlando-Kissimmee-Sanford, FL | 81 µg/m³ | 6.8 | May 9, 2007 | Worst day on record |
| Atlanta-Sandy Springs-Roswell, GA | 79.8 µg/m³ | 7.2 | May 22, 2007 | #2 of its top days |
| Jacksonville, FL | 75.8 µg/m³ | 9.1 | May 9, 2007 | Worst day on record |
| Birmingham-Hoover, AL | 64.3 µg/m³ | 5.5 | May 30, 2007 | #2 of its top days |
| Miami-Fort Lauderdale-West Palm Beach, FL | 57.5 µg/m³ | 11.4 | May 12, 2007 | #5 of its top days |
| Lakeland-Winter Haven, FL | 55.3 µg/m³ | 2.5 | May 12, 2007 | #3 of its top days |
| Chattanooga, TN-GA | 48 µg/m³ | 6.3 | Jun 1, 2007 | #12 of its top days |
| Nashville-Davidson--Murfreesboro--Franklin, TN | 41.1 µg/m³ | 1.9 | May 30, 2007 | #20 of its top days |
| Cape Coral-Fort Myers, FL | 34.1 µg/m³ | 1.6 | May 12, 2007 | #3 of its top days |
| North Port-Sarasota-Bradenton, FL | 28.3 µg/m³ | 2.5 | May 12, 2007 | #14 of its top days |
| Palm Bay-Melbourne-Titusville, FL | 23.5 µg/m³ | 1.1 | May 9, 2007 | #19 of its top days |
"Cigarettes, whole event" totals a metro's ranked event days at 22 µg/m³ per cigarette: what a person outdoors there breathed across the event, as the illustration. "All-time standing" is where this episode's days sit in each metro's ranked record (worst-area measure, since 1999). Full local context is on each metro's Air Records page.
Public evidence library
Each card states what a source supports—and what it does not. Official records, research, reporting, community observations, and transparent inferences remain visibly different kinds of evidence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-09, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-10, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-09, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 3 PM2.5 samples in the candidate CBSA on 2007-05-09, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 3 PM2.5 samples in the candidate CBSA on 2007-05-08, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-10, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-08, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 3 PM2.5 samples in the candidate CBSA on 2007-05-10, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-13, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 3 PM2.5 samples in the candidate CBSA on 2007-05-12, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 3 PM2.5 samples in the candidate CBSA on 2007-05-11, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-12, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-13, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 8 PM2.5 samples in the candidate CBSA on 2007-05-12, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-11, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 6 PM2.5 samples in the candidate CBSA on 2007-05-11, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-12, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-12, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 6 PM2.5 samples in the candidate CBSA on 2007-05-13, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier RT — Wildfire-U. S.
EPA AQS carries an agency-submitted request-exclusion qualifier (RT, Wildfire-U. S.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-12, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-23, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 3 PM2.5 samples in the candidate CBSA on 2007-05-22, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-22, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 6 PM2.5 samples in the candidate CBSA on 2007-05-27, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 4 PM2.5 samples in the candidate CBSA on 2007-05-27, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 18 PM2.5 samples in the candidate CBSA on 2007-05-30, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 2 PM2.5 samples in the candidate CBSA on 2007-06-01, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-31, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 2 PM2.5 samples in the candidate CBSA on 2007-06-01, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 5 PM2.5 samples in the candidate CBSA on 2007-05-30, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 1 PM2.5 sample in the candidate CBSA on 2007-06-01, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 1 PM2.5 sample in the candidate CBSA on 2007-05-31, identifying wildfire smoke as affecting the sample. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
AQS PM2.5 qualifier E — Forest Fire.
EPA AQS carries an agency-submitted request-exclusion qualifier (E, Forest Fire.) on 2 PM2.5 samples in the candidate CBSA on 2007-05-31, identifying wildfire smoke as affecting the samples. A request-exclusion qualifier is an official submitting-agency causal claim, but this endpoint does not establish EPA concurrence.
2007 Georgia Ambient Air Surveillance Report
Georgia EPD's May 26-28 Atlanta episode assessment found trajectories, satellite imagery, and smoke observations supported direct contributions from Ware County, Georgia and northern Florida wildfires to elevated particle pollution in northwest and western Georgia, including metro Atlanta.
NASA MODIS Image of the Day: May 10, 2007 - Fires in Georgia and Florida
The NASA MODIS report states that fires on May 8 produced thick smoke plumes that flowed south and west over the Gulf of Mexico, corroborating regional smoke transport during the candidate period.
Contemporaneous AP photo reporting states that haze and a burning smell affected Florida and southeastern Georgia amid the state-line wildfire, corroborating smoke conditions during the event.
A contemporaneous report quoting NWS Huntsville described smoke plumes advecting into north Alabama, north Georgia, and southeast Tennessee, with reduced visibility around Birmingham's region.
Smoke from wildfire fills Atlanta air
Contemporaneous AP reporting identified smoke in Atlanta as wind-transported from major fires along the Georgia-Florida line.
Satellite Remote Sensing and Mesoscale Modeling of the 2007 Georgia/Florida Fires
NASA's project summary states that 2007 Georgia-Florida fires had major near-surface PM impacts across the Southeast and that impacts were observed in Birmingham through elevated aerosol optical depth and PM2.5.
NASA documents the Bugaboo Fire beginning in the Okefenokee Swamp in early May and spreading south into Florida; it does not assess the candidate monitors.
Incident Management Situation Report, May 17, 2007
The federal incident report documents large active Florida and Georgia fires during the May 11–13 candidate period, but it does not assign the Tampa PM2.5 observation to a source.
EPA monitor flag EPA attached an exceptional-event qualifier to the affected samples. The agency flagged the measurement itself; no separate agency record describes the event.
This episode was grouped from the monitor record by the catalog pipeline and given its cause from the evidence listed above. It has not been individually reviewed and signed off, so its boundaries, cause, and name may change as evidence accumulates. Grouping policy common_sense_root_cause_grouping.v2. The cause label reflects the assembled evidence above, not an IAQng detection formula. If it is wrong, tell us.