Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Tallahassee, FL

May 15, 2012Leon County, Florida

NWS Tallahassee, FL issued this special weather statement at May 15, 2012, 4:39 PM EDT for Leon County, Florida. It was in force for 21 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
May 15, 2012, 4:39 PM EDT (20:39 UTC)
Expired
May 15, 2012, 5:00 PM EDT
In force
21 min
Issued by
NWS Tallahassee, FL

County Leon County, FL

The radar

The Tallahassee radar (KTLH), 17 km from the middle of the area, began a volume at 20:39 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.7 hours before the alert went out and 16 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 2012-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 719 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 12:00Z on 2012-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
719 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 15, 3:45 PM EDT, 54 minutes earlier.

Area forecast discussion, May 15, 3:45 PM EDT, 54 minutes before
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Hazardous weather outlook, May 15, 11:15 AM EDT, 5 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1115 AM EDT TUE MAY 15 2012

ALZ065>069-FLZ007>019-026>029-034-108-112-114-115-118-127-128-134-
GAZ120>131-142>148-155>161-GMZ730-750-755-765-770-775-160900-
COFFEE-DALE-HENRY-GENEVA-HOUSTON-INLAND WALTON-CENTRAL WALTON-
HOLMES-WASHINGTON-JACKSON-INLAND BAY-CALHOUN-INLAND GULF-
INLAND FRANKLIN-GADSDEN-LEON-INLAND JEFFERSON-MADISON-LIBERTY-
INLAND WAKULLA-INLAND TAYLOR-LAFAYETTE-INLAND DIXIE-SOUTH WALTON-
COASTAL BAY-COASTAL GULF-COASTAL FRANKLIN-COASTAL JEFFERSON-
COASTAL WAKULLA-COASTAL TAYLOR-COASTAL DIXIE-QUITMAN-CLAY-
RANDOLPH-TERRELL-DOUGHERTY-LEE-WORTH-TURNER-TIFT-BEN HILL-IRWIN-
EARLY-MILLER-BAKER-MITCHELL-COLQUITT-COOK-BERRIEN-SEMINOLE-
DECATUR-GRADY-THOMAS-BROOKS-LOWNDES-LANIER-
APALACHEE BAY OR COASTAL WATERS FROM KEATON BEACH TO OCHLOCKONEE
RIVER FL OUT TO 20 NM-
COASTAL WATERS FROM APALACHICOLA TO DESTIN FL OUT 20 NM-
COASTAL WATERS FROM  OCHLOCKONEE RIVER TO APALACHICOLA FL OUT TO
20 NM-
COASTAL WATERS FROM  SUWANNEE RIVER TO KEATON BEACH OUT 20 NM-
WATERS FROM APALACHICOLA TO DESTIN FL FROM 20 TO 60 NM-
WATERS FROM  SUWANNEE RIVER TO APALACHICOLA FL FROM 20 TO 60 NM-
1115 AM EDT TUE MAY 15 2012 /1015 AM CDT TUE MAY 15 2012/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ALABAMA...
SOUTHWEST AND SOUTH CENTRAL GEORGIA...AND THE FLORIDA BIG BEND
AND PANHANDLE...AND ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT...

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN TODAY.
THUNDERSTORMS WILL BE MOST NUMEROUS OVER THE FLORIDA BIG BEND AND
INTO SOUTH CENTRAL GEORGIA. ISOLATED SEVERE STORMS WILL BE POSSIBLE
THIS AFTERNOON AND EVENING...WITH THE MAIN THREAT BEING DAMAGING
WIND GUSTS AROUND 60 MPH. THE MOST FAVORABLE AREA FOR STRONG TO
SEVERE STORMS WILL BE ALONG AND SOUTHEAST OF A TIFTON GEORGIA...TO
QUINCY FLORIDA...TO APALACHICOLA LINE. A FEW STORMS COULD ALSO
PRODUCE HEAVY RAINFALL WHICH COULD CAUSE PONDING OF WATER. SHOWERS
AND STORMS WILL GRADUALLY COME TO AN END AFTER SUNSET.

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

COVERAGE OF SHOWERS AND THUNDERSTORMS WILL DECREASE THROUGH THE
PERIOD TO LEVELS MORE TYPICAL OF MAY. NO ORGANIZED SEVERE WEATHER
IS ANTICIPATED. HOWEVER...ONE OR TWO STRONG TO MARGINALLY SEVERE
STORMS CANNOT BE RULED OUT DURING THE AFTERNOON AND EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED...HOWEVER ANY REPORTS RELATED
TO THUNDERSTORM ACTIVITY WOULD BE APPRECIATED.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
WEBSITE ON THE INTERNET AT WEATHER.GOV...THEN CLICK ON YOUR AREA
OF INTEREST ON THE NATIONAL MAP.

08/18

In the hours before

Special weather statement, May 15, 3:03 PM EDT, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
303 PM EDT TUE MAY 15 2012

FLZ018-GAZ158-151930-
THOMAS GA-INLAND JEFFERSON FL-
303 PM EDT TUE MAY 15 2012

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR FAR NORTHWEST
JEFFERSON AND SOUTHERN THOMAS COUNTIES...

* UNTIL 330 PM EDT

AT 302 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A STRONG
THUNDERSTORM 10 MILES NORTHWEST OF MONTICELLO...OR NEAR FINCHER...
MOVING NORTHEAST AT 15 MPH.

WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

LAT...LON 3059 8394 3063 8401 3067 8401 3067 8403
      3068 8404 3081 8398 3074 8375
TIME...MOT...LOC 1904Z 221DEG 15KT 3065 8397

08-LAMERS
Special weather statement, May 15, 3:19 PM EDT, 1 hour 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
319 PM EDT TUE MAY 15 2012

FLZ027-127-151945-
COASTAL WAKULLA FL-INLAND WAKULLA FL-
319 PM EDT TUE MAY 15 2012

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR WAKULLA COUNTY...

* UNTIL 345 PM EDT

AT 316 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A STRONG
THUNDERSTORM 6 MILES WEST OF CRAWFORDVILLE...OR NEAR ARRAN...MOVING
NORTHEAST AT 15 MPH.

THIS STORM WILL BE NEAR...
  CRAWFORDVILLE BY 335 PM EDT.

PENNY SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3030 8449 3026 8421 3009 8445 3014 8456
TIME...MOT...LOC 1920Z 223DEG 11KT 3018 8446

08-LAMERS
Local storm report, May 15, 3:40 PM EDT, 59 minutes before
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Local storm report, May 15, 3:40 PM EDT, 59 minutes before
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Special weather statement, May 15, 4:39 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 3:19 PM EDTSpecial Weather StatementTAEWakulla26 min
May 15, 3:38 PM EDTSevere Thunderstorm WarningTAEGadsden, Leon37 min
May 14, 10:18 PM EDTSpecial Weather StatementTAEIrwin57 min
May 15, 3:03 PM EDTSpecial Weather StatementTAEThomas27 min
May 15, 3:15 PM EDTSevere Thunderstorm WarningTAEThomas30 min

Nearby

Special Weather Statements in Florida, 2012Every special weather statement 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.