Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 59, NWS Tallahassee, FL

May 12, 2001Madison County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at May 12, 2001, 8:07 PM EDT for Madison County, Florida. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 12, 2001, 8:07 PM EDT (00:07 UTC)
Expired
May 12, 2001, 8:45 PM EDT
In force
38 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Madison County, FL

What was reported inside it

TimeReportWhereRemark
May 12, 8:20 PM EDTHail 0.88Madison, FLNickel size hail reported by a spotter in Madison and a deputy sheriff between Madison and Greenville.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.1 hours before the alert went out and 80 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 00:00Z on 2001-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 792 joules per kilogram.LCLLFCEL10008507005003002001001 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, Tallahassee Rgnl, FL at 00:00Z on 2001-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
792 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1562 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
20 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.

000 
WUUS52 KTAE 130015
SVRTLH

FLC079-130045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE TALLAHASSEE FL
807 PM EDT SAT MAY 12 2001

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

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

* UNTIL 845 PM EDT...

* AT 807 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL OVER HAMBURG...OR ABOUT 8 MILES
  NORTHWEST OF MADISON...MOVING EAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHERRY LAKE BY 835 PM EDT...
  HANSON...PINETTA BY 845 PM EDT...

THE MAIN THREAT FROM THIS STORM IS LARGE HAIL.


LAT...LON 306E5 8359 3048 8364 3036 8340 3060 8332

.END

5-MOLLERE

What forecasters said that day

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

NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 1:15 PM EDT, 6 hours 52 minutes earlier.

Area forecast discussion, May 12, 1:15 PM EDT, 6 hours 52 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
115 PM EDT SAT MAY 12 2001

17Z MSAS SURFACE ANALYSIS SHOWS E-W RIDGE FROM GULF COAST STATES
INTO ATLANTIC. COLD FRONT FROM CNTRL APPALACHIANS THRU TN INTO  SRN
PLAINS MAKING STEADY PROGRESS SEWD. VISIBLE SATELLITE LOOPS SHOW SEA
BREEZE CU FORMING JUST INLAND OF TAYLOR & DIXIE CTY COAST. OTHER
FEATURES WERE LINE OF TCU FORMING ALONG OUTFLOW BNDRY FROM MAI TO
JUST E OF BBG (BAINBRIDGE) GA...AND LOW/MID CLOUDS OVER PORTIONS OF
SE AL INTO SW/CNTRL GA. SCT SHWRS/ISOLD TSTMS PER KTLH 88D SLOWLY
MOVING EWD ALONG A LINE FROM N OF DHN TO ABY TO NE OF TIFT CTY...AS
WELL AS A FEW TSTMS ALONG AFOREMENTION BNDRY JUST N OF TLH. TEMPS
OUTSIDE PCPN AREAS RISING INTO THE LOWER-MID 80S & WINDS WERE
VARIABLE LESS THAN 10 MPH...EXCEPT SWLY NEAR BIG BEND COAST AS SEA
BREEZE PUSHES INLAND.

12Z MODELS IN GOOD AGREEMENT W/ LOCATION/STRENGTH OF SYNOPTIC
FEATURES THIS FCST CYCLE. IN THE MID/UPPER LEVELS...TROUGH OVER THE
GREAT LAKES/OH VALLEY SHIFTS EWD TO MID-ATLANTIC/NEW ENGLAND AS
BROAD RIDGE OVER WRN CONUS ADVANCES INTO THE PLAINS STATES. AT THE
SURFACE...COLD FRONT MAKES FURTHER INROADS SE INTO SERN CONUS W/ NGM
(PREFERRED SOLUTION) FASTER THAN ETA WHICH LAGS FRONT OVER NRN CWFA
AT 12Z SUNDAY. EXPECT SCT CONVECTION ONGOING AT PRESS TIME AS SEA
BREEZE FRONT INTERACTS W/ OUTFLOW BNDRYS FROM ACTIVITY OVER NRN
AREAS. CANNOT RULE OUT A FEW STRONG STORMS W/ HAIL LATE THIS AFTN
THRU EARLY EVENING DUE TO MUCAPES FROM 2000-2500 J/KG & RELATIVELY
STEEP LAPSE RATES. SHWRS/TSTMS SHOULD DIMINISH OVERNIGHT FROM NW TO
SE AS THE COLD FRONT MOVES INTO THE CWFA OVERNIGHT. HIGH PRESSURE
OVER THE MIDWEST SETTLES SWD & TAKES RESIDENCE OVER THE SERN CONUS
SUNDAY NIGHT & MON. MUCH DRIER AIR FILTERS INTO THE CWFA SUNDAY AFTN
AS MEAN RH VALUES DROP TO 30% OR LESS MONDAY MORNING. WILL KEEP
CHANCE POPS GOING (30-40%) FIRST PERIOD...THEN NIL SUNDAY THRU
MONDAY NIGHT. FAVORED FWC POPS OVER FAN/MAV...AND FWC TEMPS.

LATEST MRF HAS SURFACE RIDGE OVER GULF STATES WEAKENING &
RETROGRADING SWWD AS SHORTWAVE/FRONT ON E SIDE OF PLAINS MID/UPPER
RIDGE RIDES SWD INTO CWFA LATE WED...EXITING THURSDAY NIGHT. LOOKS
DRY FRIDAY...W/ NEXT CHANCE OF RAIN SATURDAY NIGHT & SUNDAY AS
ANOTHER FRONT APPROACHES THE CWFA FROM THE NW. TEMPS WILL AVERAGE
NEAR CLIMO THRU THE EXTENDED PERIOD.

WINDS VEER FROM SW TO NW & INCREASE AS FRONT DROPS SEWD ACROSS THE
WATERS OVERNIGHT W/ CONVECTION ENDING AFTER WIND SHIFT. MODERATE NLY
WINDS SUNDAY BECOME GUSTY NELY SUNDAY NIGHT & MONDAY...POSSIBLY AT
SCEC LEVELS AS PRESSURE GRADIENT TIGHTENS. WINDS & SEAS DIMINISH BY
MID WEEK AS SURFACE RIDGE SETTLES OVER THE MARINE AREA.

A FIRE WEATHER WATCH WILL BE ISSUED FOR SUNDAY AFTN AS INCREASING
SUBSIDENCE ALLOWS MIN RH VALUES OF 30-35% FOR MARGINAL DURATIONS.
RED FLAG CONDITIONS LOOM ON THE HORIZON FOR MONDAY.

PRELIM CCF...
TLH UU 060/087 053/088 4-00
PFN UU 065/085 061/083 4-00
DHN UU 063/085 058/086 3000
ABY UU 062/085 055/087 3000
VLD UU 062/087 054/088 4-00

.TLH...
AL...NONE.
GA...NONE.
FL...FIRE WEATHER WATCH ALL BUT THE IMMEDIATE COAST SUNDAY AFTN.

MAJ

Nearby

Severe Thunderstorm Warnings in Florida, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.