Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 92, NWS Tallahassee, FL

April 28, 2011Lafayette County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 28, 2011, 1:29 PM EDT for Lafayette County, Florida. It was in force for 31 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
Apr 28, 2011, 1:29 PM EDT (17:29 UTC)
Expired
Apr 28, 2011, 2:00 PM EDT
In force
31 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Lafayette County, FL

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 28, 9:47 AM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.5 hours before the alert went out and 106 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 2011-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3422 joules per kilogram.LCLEL10008507005003002001001 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 2011-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 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
3422 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
473 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
3.0
Supercell composite
14.5

Open this sounding in Storm Lab

The text

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

883 
WUUS52 KTAE 281729
SVRTAE
FLC067-281800-
/O.NEW.KTAE.SV.W.0092.110428T1729Z-110428T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
129 PM EDT THU APR 28 2011

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN LAFAYETTE COUNTY IN FLORIDA...

* UNTIL 200 PM EDT

* AT 126 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  BUCKVILLE...AND MOVING EAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  BUCKVILLE...DAY...AND MAYO

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY!

&&

LAT...LON 3003 8336 3025 8335 3026 8331 3026 8325
      3023 8324 3018 8324 3017 8323 3015 8323
      3011 8321 3011 8312 3008 8307 3007 8307
TIME...MOT...LOC 1729Z 276DEG 11KT 3015 8326

$$

38-GODSEY

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 4:03 AM EDTSevere Thunderstorm WarningTAEHolmes27 min
Apr 28, 4:27 AM EDTSevere Thunderstorm WarningTAEHolmes, Jackson48 min
Apr 28, 4:31 AM EDTSpecial Marine WarningTAE59 min
Apr 28, 5:22 AM EDTSpecial Weather StatementTAEJackson38 min
Apr 28, 5:51 AM EDTTornado WarningTAEJackson39 min
Apr 28, 7:11 AM EDTSpecial Weather StatementTAEGadsden49 min
Apr 28, 7:45 AM EDTSevere Thunderstorm WarningTAEGadsden, Leon45 min
Apr 28, 8:02 AM EDTTornado WarningTAEGadsden, Leon28 min
Apr 28, 8:21 AM EDTSevere Thunderstorm WarningTAELeon39 min
Apr 28, 8:40 AM EDTSevere Thunderstorm WarningTAELeon, Wakulla50 min
Apr 28, 8:56 AM EDTSevere Thunderstorm WarningTAEJefferson, Leon49 min
Apr 28, 9:16 AM EDTTornado WarningTAELeon, Wakulla29 min
Apr 28, 9:30 AM EDTSevere Thunderstorm WarningTAEJefferson, Madison45 min
Apr 28, 9:45 AM EDTSevere Thunderstorm WarningTAEJefferson, Wakulla60 min
Apr 28, 10:03 AM EDTSevere Thunderstorm WarningTAEJefferson42 min
Apr 28, 10:21 AM EDTSpecial Marine WarningTAE54 min
Apr 28, 10:41 AM EDTSevere Thunderstorm WarningTAEJefferson, Madison49 min
Apr 28, 10:46 AM EDTSevere Thunderstorm WarningTAEJefferson, Taylor44 min
Apr 28, 11:30 AM EDTSpecial Weather StatementTAETaylor60 min
Apr 28, 11:31 AM EDTSpecial Weather StatementTAEMadison29 min
Apr 28, 12:29 PM EDTSpecial Weather StatementTAELafayette61 min
Apr 28, 12:39 PM EDTSevere Thunderstorm WarningTAEMadison21 min
Apr 28, 12:46 PM EDTSevere Thunderstorm WarningTAELafayette, Taylor44 min
Apr 28, 12:56 PM EDTTornado WarningTAELafayette34 min
Apr 28, 3:42 PM EDTFire Weather WatchTAEBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more12 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning in 2011

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.