Alert archive / Florida / Red Flag Warnings in 2013

Red Flag Warning 14, NWS Tampa Bay, FL

March 13, 20136 counties in Florida

NWS Tampa Bay, FL issued this red flag warning at Mar 13, 2013, 3:46 AM EDT for 6 counties in Florida. It took effect at Mar 13, 2013, 12:00 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: Mar 13, 2013, 3:46 AM EDT (07:46 UTC)
In effect from: Mar 13, 2013, 12:00 PM EDT
Expired: Mar 13, 2013, 7:00 PM EDT
In force: 7 hr
Issued by: NWS Tampa Bay, FL

Counties DeSoto County, FL, Hardee County, FL, Highlands County, FL, Pinellas County, FL, Polk County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 49 km from the middle of the area, began a volume at 07:48 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, 7.8 hours before the alert went out and 49 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1907 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tampa Bay, FL wrote its last area forecast discussion before this red flag warning went out at Mar 13, 3:36 AM EDT, 10 minutes earlier.

Area forecast discussion, Mar 13, 3:36 AM EDT, 10 minutes before

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Hazardous weather outlook, Mar 12, 5:11 AM EDT, 22 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
511 AM EDT TUE MAR 12 2013

FLZ039-042-043-048>052-055>057-060>062-065-GMZ830-850-853-856-870-
873-876-122115-
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK-
MANATEE-HARDEE-HIGHLANDS-SARASOTA-DESOTO-CHARLOTTE-LEE-
TAMPA BAY WATERS-TARPON SPRINGS TO SUWANNEE RIVER OUT 20 NM-
ENGLEWOOD TO TARPON SPRINGS OUT 20 NM-
BONITA BEACH TO ENGLEWOOD OUT 20 NM-
TARPON SPRINGS TO SUWANNEE RIVER OUT 20 TO 60 NM-
ENGLEWOOD TO TARPON SPRINGS OUT 20 TO 60 NM-
BONITA BEACH TO ENGLEWOOD OUT 20 TO 60 NM-
511 AM EDT TUE MAR 12 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST
FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
SHOWERS WITH ISOLATED THUNDERSTORMS WILL AFFECT THE FORECAST AREA
TODAY AS A COLD FRONT PASSES THROUGH THE REGION. GUSTY WINDS WITH
DANGEROUS LIGHTNING STRIKES CAN BE EXPECTED WITH THE STRONGER
STORMS. THE THUNDERSTORM THREAT IS EXPECTED TO PASS BY LATER THIS
AFTERNOON.

...RIP CURRENT IMPACT...
WITH A COLD FRONT PASSING THROUGH THE AREA...WINDS WILL TURN TO
THE NORTHWEST...LEADING TO A MODERATE RISK OF RIP CURRENTS AT AREA
BEACHES TODAY.

...WIND AND SEA IMPACT...
A SMALL CRAFT ADVISORY REMAINS IN EFFECT THROUGH THIS
AFTERNOON...WITH WINDS AROUND 20 KNOTS AND SEAS BUILDING TO UP TO
7 FEET OFFSHORE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

...WIND AND SEA IMPACT...
WINDS WILL REMAIN NEAR CAUTIONARY AND POSSIBLY ADVISORY LEVELS
THROUGH THURSDAY BEFORE SLOWLY SUBSIDING.

...FIRE WEATHER IMPACT...
DRIER AIR WILL FILTER INTO THE REGION AS HIGH PRESSURE BUILDS IN
BEHIND THE COLD FRONT. THIS WILL LEAD TO ELEVATED FIRE DANGER
CONDITIONS ACROSS PORTIONS OF THE FORECAST AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

CARLISLE

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 3:39 PM EDT	Frost Advisory	TBW	Sumter	17 hr
Mar 13, 3:50 PM EDT	Fire Weather Watch	TBW	Polk	5 hr

Nearby

Red Flag Warnings in Florida, 2013 Every red flag warning in 2013

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.