Alert archive / Florida / Dense Smoke Advisories in 2012
Dense Smoke Advisory 8, NWS Jacksonville, FL
NWS Jacksonville, FL issued this dense smoke advisory at Apr 11, 2012, 3:40 PM EDT for 5 counties in Florida. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Apr 11, 2012, 3:40 PM EDT (19:40 UTC)
- Expired
- Apr 12, 2012, 6:29 AM EDT
- In force
- 15 hr
- Issued by
- NWS Jacksonville, FL
Counties Baker County, FL, Bradford County, FL, Gilchrist County, FL, Nassau County, FL, Union County, FL
The radar
The Jacksonville radar (KJAX), 68 km from the middle of the area, began a volume at 19:44 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Jacksonville, FL (KNIP), launched 12:00Z, 7.7 hours before the alert went out and 69 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1921 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this dense smoke advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this dense smoke advisory went out at Apr 11, 2:52 PM EDT, 48 minutes earlier.
Area forecast discussion, Apr 11, 2:52 PM EDT, 48 minutes before
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</html>Hazardous weather outlook, Apr 11, 2:15 PM EDT, 1 hour 25 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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</html>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 6:35 PM EDT | Red Flag Warning | JAX | Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more | 24 hr |
Nearby
Dense Smoke Advisories in Florida, 2012Dense Smoke Advisories in Georgia, 2012Every dense smoke advisory in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.