Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

March 27, 2003Levy County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 27, 2003, 2:08 PM EST for Levy County, Florida. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 27, 2003, 2:08 PM EST (19:08 UTC)
Expired
Mar 27, 2003, 2:45 PM EST
In force
37 min
Issued by
NWS Tampa Bay, FL
Area
Counties, with a storm outline in the text

County Levy County, FL

The radar

The Tallahassee radar (KTLH), 179 km from the middle of the area, began a volume at 19:10 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 27, 11:00 AM ESTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.1 hours before the alert went out and 177 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, Tallahassee Rgnl, FL at 12:00Z on 2003-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 188 joules per kilogram.LCLLFCEL10008507005003002001001 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, Tallahassee Rgnl, FL at 12:00Z on 2003-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.193958Sfc1 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
188 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1168 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
192 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.

131 
WUUS52 KTBW 271908
SVRTBW
FLC075-271945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
208 PM EST THU MAR 27 2003

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LEVY COUNTY IN FLORIDA.

* UNTIL 245 PM EST

* AT 208 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS...12 MILES
  SOUTHWEST OF CEDAR KEY...MOVING NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT...
  CEDAR KEY.
  OTTER CREEK.
  CHIEFLAND.

ANOTHER SEVERE THUNDERSTORM IN NORTHERN CITRUS COUNTY WAS MOVING 
NORTHWARD AND HEADED INTO EXTREME SOUTHERN LEVY COUNTY ALONG THE 
WITHLACOOCHEE RIVER.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. MOVE TO A PLACE OF SAFETY...AN INTERIOR ROOM IN THE LOWEST
FLOOR OF YOUR HOUSE OR BUSINESS.

WIND GUSTS TO 60 MPH MAY CAUSE SOME STRUCTURAL DAMAGE...MAINLY TO 
TREES AND POWER LINES. POORLY ANCHORED ROOFS...MOBILE HOMES...AND 
SHEDS ARE ALSO AT RISK.

GOLFBALL SIZE HAIL IS LIKELY. PUT YOUR CAR IN A GARAGE AND MOVE INTO
A STURDY BUILDING.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN RUSKIN.

&&

LAT...LON 2913 8324 2901 8308 2948 8261 2963 8281

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 10:53 AM ESTSevere Thunderstorm WarningTBWCharlotte37 min
Mar 27, 11:03 AM ESTSpecial Marine WarningTBW57 min
Mar 27, 11:08 AM ESTSevere Thunderstorm WarningTBWDeSoto52 min
Mar 27, 11:52 AM ESTSpecial Marine WarningTBW53 min
Mar 27, 12:10 PM ESTSevere Thunderstorm WarningTBWLee65 min
Mar 27, 1:00 PM ESTSevere Thunderstorm WarningTBWHillsborough30 min
Mar 27, 1:04 PM ESTSevere Thunderstorm WarningTBWLevy31 min
Mar 27, 1:20 PM ESTSevere Thunderstorm WarningTBWPasco40 min
Mar 27, 1:34 PM ESTSpecial Marine WarningTBW56 min
Mar 27, 1:45 PM ESTSevere Thunderstorm WarningTBWCitrus30 min
Mar 27, 2:01 PM ESTSevere Thunderstorm WarningTBWHernando29 min
Mar 27, 2:10 PM ESTSpecial Marine WarningTBW2 hr
Mar 27, 2:19 PM ESTSevere Thunderstorm WarningTBWCitrus, Sumter41 min
Mar 27, 2:20 PM ESTSevere Thunderstorm WarningTBWHernando, Pasco25 min
Mar 27, 2:37 PM ESTTornado WarningTBWLee23 min
Mar 27, 2:42 PM ESTTornado WarningTBWLevy48 min
Mar 27, 2:58 PM ESTSevere Thunderstorm WarningTBWHernando, Pasco47 min
Mar 27, 3:08 PM ESTTornado WarningTBWPasco22 min
Mar 27, 4:37 PM ESTSevere Thunderstorm WarningTBWPasco38 min

Nearby

Severe Thunderstorm Warnings in Florida, 2003Every severe thunderstorm warning in 2003

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.