Alert archive / Florida / Red Flag Warnings in 2016

Red Flag Warning 4, NWS Tampa Bay, FL

April 9, 201615 counties in Florida

NWS Tampa Bay, FL issued this red flag warning at Apr 9, 2016, 3:51 AM EDT for 15 counties in Florida. It took effect at Apr 9, 2016, 11:00 AM EDT. It was in force for 9 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
Apr 9, 2016, 3:51 AM EDT (07:51 UTC)
In effect from
Apr 9, 2016, 11:00 AM EDT
Expired
Apr 9, 2016, 8:00 PM EDT
In force
9 hr
Issued by
NWS Tampa Bay, FL

Counties Charlotte County, FL, Citrus County, FL, DeSoto County, FL, Hardee County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Lee County, FL, Levy County, FL, Manatee County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 27 km from the middle of the area, began a volume at 07:54 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, 7.9 hours before the alert went out and 28 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 2016-04-09Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2016-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.19395878Sfc1 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
1682 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

824 
WWUS82 KTBW 090751
RFWTBW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
351 AM EDT SAT APR 9 2016

...RED FLAG WARNING IN EFFECT FROM 11 AM UNTIL 7 PM EDT TODAY FOR
LONG DURATIONS OF LOW HUMIDITY...HIGH ERC VALUES...AND BREEZY
NORTH WINDS...

.LONG DURATIONS OF HUMIDITY VALUES BELOW 35 PERCENT COMBINED WITH
ERC VALUES OF 30 OR HIGHER...AND PERIODS OF SUSTAINED NORTH WINDS
OF 15 MPH...WILL LEAD TO RED FLAG CONDITIONS ACROSS MUCH OF WEST
CENTRAL...CENTRAL...AND SOUTHWESTERN FLORIDA.

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-092000-
/O.NEW.KTBW.FW.W.0004.160409T1500Z-160410T0000Z/
SUMTER-PINELLAS-POLK-HARDEE-HIGHLANDS-DESOTO-COASTAL LEVY-
COASTAL CITRUS-COASTAL HERNANDO-COASTAL PASCO-
COASTAL HILLSBOROUGH-COASTAL MANATEE-COASTAL SARASOTA-
COASTAL CHARLOTTE-COASTAL LEE-INLAND LEVY-INLAND CITRUS-
INLAND HERNANDO-INLAND PASCO-INLAND HILLSBOROUGH-INLAND MANATEE-
INLAND SARASOTA-INLAND CHARLOTTE-INLAND LEE-
351 AM EDT SAT APR 9 2016

...RED FLAG WARNING IN EFFECT FROM 11 AM UNTIL 7 PM EDT TODAY FOR
LONG DURATIONS OF LOW HUMIDITY...HIGH ERC VALUES...AND BREEZY
NORTH WINDS...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA - RUSKIN FL HAS
ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 11 AM THIS
MORNING TO 8 PM EDT THIS EVENING. 

* AFFECTED AREA...ALL COUNTIES IN WEST CENTRAL...CENTRAL...AND
  SOUTHWESTERN FLORIDA.

* WIND...NORTHWEST TO NORTHEAST WINDS AROUND 15 MPH...WITH HIGHER
  GUSTS IN THE AFTERNOON. 

* HUMIDITY...20 TO 28 PERCENT

* ERC...28 TO 30...EXCEPT 37 IN PINELLAS AND SARASOTA COUNTIES.

* 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.

&&

$$

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 3:51 AM EDTRip Current StatementTBWCharlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota16 hr

Nearby

Red Flag Warnings in Florida, 2016Every red flag warning in 2016

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.