Alert archive / Florida / Red Flag Warnings in 2011
Red Flag Warning 13, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this red flag warning at Mar 11, 2011, 3:11 AM EST for 5 counties in Florida. It took effect at Mar 11, 2011, 12:00 PM EST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 11, 2011, 3:11 AM EST (08:11 UTC)
- In effect from
- Mar 11, 2011, 12:00 PM EST
- Expired
- Mar 11, 2011, 6:00 PM EST
- In force
- 6 hr
- Issued by
- NWS Tampa Bay, FL
Counties DeSoto County, FL, Hardee County, FL, Highlands County, FL, Polk County, FL, Sumter County, FL
The radar
The Tampa radar (KTBW), 64 km from the middle of the area, began a volume at 08:12 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
Tampa Bay, FL (KTBW), launched 00:00Z, 8.2 hours before the alert went out and 64 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
- 1675 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
728 WWUS82 KTBW 110811 RFWTBW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 311 AM EST FRI MAR 11 2011 ...RED FLAG WARNING IN EFFECT TODAY FOR ALL AREAS EXCEPT PINELLAS COUNTY FOR LOW RELATIVE HUMIDITY AND BREEZY CONDITIONS... .DRY AIR WILL CONTINUE TO FILTER THROUGH THE REGION TODAY WITH BREEZY WINDS FROM THE NORTH.. FLZ039-042-043-048-049-051-052-055>057-060>062-065-112300- /O.NEW.KTBW.FW.W.0013.110311T1700Z-110311T2300Z/ LEVY-CITRUS-SUMTER-HERNANDO-PASCO-HILLSBOROUGH-POLK-MANATEE- HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-LEE- 311 AM EST FRI MAR 11 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS EVENING... THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM EST THIS EVENING. HIGH PRESSURE CONTINUES TO BUILD IN FROM THE WEST HELPING A SIGNIFICANTLY DRIER AIR MASS ESTABLISH OVER THE AREA. A TIGHT PRESSURE GRADIENT IN BETWEEN THE HIGH TO THE WEST A COLD FRONT TO THE EAST WILL PRODUCE BREEZY CONDITIONS BY THIS AFTERNOON. THE COMBINATION OF WIND AND LOW RH WILL PRODUCE INSTANTANEOUS RED FLAG CONDITIONS. ADDITIONALLY...ERC IS FORECAST TO REACH 38 IN LEE COUNTY TODAY WITH LONG DURATIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL OCCUR WITHIN 24 HOURS. && $$
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 4:03 PM EST | Frost Advisory | TBW | Sumter | 16 hr |
Nearby
Red Flag Warnings in Florida, 2011Every red flag warning in 2011
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.