Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 26, NWS Melbourne, FL

March 31, 2001Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Mar 31, 2001, 3:27 PM EST for Osceola County, Florida. It was in force for 48 min. 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 31, 2001, 3:27 PM EST (20:27 UTC)
Expired
Mar 31, 2001, 4:15 PM EST
In force
48 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 49 km from the middle of the area, began a volume at 20:31 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.5 hours before the alert went out and 78 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, Cape Canaveral, FL at 12:00Z on 2001-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1036 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, Cape Canaveral, FL at 12:00Z on 2001-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939587897117Sfc1 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
1036 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

644 
WUUS52 KMLB 312028
SVRMLB
FLC097-312115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
327 PM EST SAT MAR 31 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN OSCEOLA COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 415 PM EST.

* AT 316 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A     
  SEVERE THUNDERSTORM 12 MILES WEST OF HOLOPAW...OR ABOUT 5 MILES    
  SOUTH OF SAINT CLOUD...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE ACROSS NORTHERN OSCEOLA 
COUNTY...INCLUDING THE HOLOPAW AREA THROUGH 415 PM.

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE STORM. FREQUENT CLOUD 
TO GROUND LIGHTNING AND VERY HEAVY RAIN WILL ALSO ACCOMPANY THE 
STORM. IF YOU ARE IN ITS PATH...PUT YOUR CAR IN A GARAGE AND MOVE TO 
A STURDY BUILDING AWAY FROM WINDOWS.

$$

LAT...LON 2827 8126 2809 8129 2801 8088 2823 8086

SPRATT

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 2:17 PM ESTSevere Thunderstorm WarningMLBSeminole43 min
Mar 31, 2:38 PM ESTSevere Thunderstorm WarningMLBOsceola52 min
Mar 31, 2:59 PM ESTSevere Thunderstorm WarningMLBBrevard46 min
Mar 31, 3:41 PM ESTSevere Thunderstorm WarningMLBBrevard64 min
Mar 31, 3:44 PM ESTSevere Thunderstorm WarningMLBLake46 min
Mar 31, 4:00 PM ESTSevere Thunderstorm WarningMLBVolusia60 min
Mar 31, 4:16 PM ESTSevere Thunderstorm WarningMLBOsceola59 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.