Alert archive / Florida / Red Flag Warnings in 2012

Red Flag Warning 28, NWS Tampa Bay, FL

May 22, 2012Polk County, Florida

NWS Tampa Bay, FL issued this red flag warning at May 22, 2012, 3:35 AM EDT for Polk County, Florida. It took effect at May 22, 2012, 1:00 PM EDT. It was in force for 7 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
May 22, 2012, 3:35 AM EDT (07:35 UTC)
In effect from
May 22, 2012, 1:00 PM EDT
Expired
May 22, 2012, 8:00 PM EDT
In force
7 hr
Issued by
NWS Tampa Bay, FL

County Polk County, FL

The radar

The Tampa radar (KTBW), 74 km from the middle of the area, began a volume at 07:38 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, 7.6 hours before the alert went out and 74 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 2012-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2012-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2064 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

197 
WWUS82 KTBW 220735
RFWTBW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
335 AM EDT TUE MAY 22 2012

...RED FLAG WARNING FOR CITRUS..HERNANDO...PASCO...HILLSBOROUGH...
POLK...AND SARASOTA COUNTIES THIS AFTERNOON AND EVENING...

.A VERY DRY AIR MASS WILL REMAIN OVER THE REGION TODAY. THIS
DRY AIR WILL PRODUCE LONG DURATIONS OF HUMIDITY VALUES BELOW
35 PERCENT. THESE LOW HUMIDITY VALUES COMBINED WITH HIGH ERC
VALUES WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS WITHIN
THE RED FLAG WARNING AREAS DURING THE AFTERNOON AND EARLY
EVENING HOURS.

FLZ042-048-049-051-052-060-230000-
/O.NEW.KTBW.FW.W.0028.120522T1700Z-120523T0000Z/
CITRUS-HERNANDO-PASCO-HILLSBOROUGH-POLK-SARASOTA-
335 AM EDT TUE MAY 22 2012

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM
EDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 8 PM EDT THIS EVENING. 

* AFFECTED AREA...CITRUS...HERNANDO...PASCO...HILLSBOROUGH... 
  POLK...SARASOTA. 

* WIND...SOUTHWEST TO WEST AROUND 10 MPH.

* HUMIDITY...FALLING TO 25 TO 30 PERCENT.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

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.

&&

$$

JCM/RKR

Nearby

Red Flag Warnings in Florida, 2012Every red flag warning 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.