Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 4, NWS Melbourne, FL

March 29, 2001Lake County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Mar 29, 2001, 10:38 AM EST for Lake County, Florida. It was in force for 67 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
Mar 29, 2001, 10:38 AM EST (15:38 UTC)
Expired
Mar 29, 2001, 11:45 AM EST
In force
67 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Lake County, FL

The radar

The Melbourne radar (KMLB), 126 km from the middle of the area, began a volume at 15:42 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.

What was reported inside it

TimeReportWhereRemark
Mar 29, 10:55 AM ESTHail 1Clermont, FL

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 watch it was issued in

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

IssuedProductOfficeLasted
Mar 29, 9:15 AM ESTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 3.6 hours before the alert went out and 123 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 2001-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 647 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, Cape Canaveral, FL at 12:00Z on 2001-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 square meters per square second.1939587897Sfc1 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
647 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
626 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
307 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 KMLB 291544
SVRMLB
FLC069-291645-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1038 AM EST THU MAR 29 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAKE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 1145 AM EST.

* AT 1035 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS ABOUT TO ENTER WESTERN LAKE COUNTY    
  NEAR LADY LAKE. THE LINE OF STORMS WAS MOVING TO THE EAST AT 35   
  MPH.

* SEVERE THUNDERSTORMS WILL BE...
  NEAR LADY LAKE AT 1050 AM
  NEAR LEESBURG AT 1100 AM
  NEAR TAVARES AT 1120 AM
  NEAR CLERMONT...EUSTIS AT 1125 AM EST

OTHER STRONG TO SEVERE STORMS WERE DEVELOPING JUST SOUTH OF CLERMONT 
AND WILL IMPACT CLERMONT THROUGH 11 AM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. IF
THE STORM APPROACHES YOU...MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM EST
THURSDAY AFTERNOON FOR FLORIDA.

$$

LAT...LON 2932 8207 2852 8215 2833 8176 2921 8156

PoB

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 11:01 AM ESTSevere Thunderstorm WarningMLBOrange59 min
Mar 29, 11:17 AM ESTSevere Thunderstorm WarningMLBOsceola58 min
Mar 29, 11:43 AM ESTSevere Thunderstorm WarningMLBSeminole62 min
Mar 29, 11:53 AM ESTSevere Thunderstorm WarningMLBOrange67 min
Mar 29, 12:12 PM ESTSevere Thunderstorm WarningMLBVolusia63 min
Mar 29, 12:15 PM ESTSevere Thunderstorm WarningMLBOsceola45 min
Mar 29, 12:34 PM ESTSevere Thunderstorm WarningMLBBrevard56 min
Mar 29, 1:05 PM ESTSevere Thunderstorm WarningMLBOsceola55 min
Mar 29, 1:22 PM ESTSevere Thunderstorm WarningMLBBrevard53 min
Mar 29, 2:33 PM ESTSevere Thunderstorm WarningMLBOkeechobee27 min
Mar 29, 2:40 PM ESTSevere Thunderstorm WarningMLBIndian River65 min
Mar 29, 3:45 PM ESTSevere Thunderstorm WarningMLBIndian River, Saint Lucie45 min
Mar 29, 4:30 PM ESTSevere Thunderstorm WarningMLBSaint Lucie45 min
Mar 29, 4:54 PM ESTSevere Thunderstorm WarningMLBMartin66 min
Mar 29, 5:20 PM ESTSevere Thunderstorm WarningMLBSaint Lucie25 min
Mar 29, 6:00 PM ESTSevere Thunderstorm WarningMLBMartin60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.