Alert archive / Florida / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 106, NWS Melbourne, FL

August 10, 2001Orange County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Aug 10, 2001, 7:33 PM EDT for Orange County, Osceola County, Florida. It was in force for 42 min. 2 reports 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: Aug 10, 2001, 7:33 PM EDT (23:33 UTC)
Expired: Aug 10, 2001, 8:15 PM EDT
In force: 42 min
Issued by: NWS Melbourne, FL
Area: Whole counties

Counties Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 60 km from the middle of the area, began a volume at 23:36 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

Time	Report	Where	Remark
Aug 10, 7:41 PM EDT	Hail 0.75	Orlando, FL
Aug 10, 7:45 PM EDT	Hail 0.75	Kissimmee, FL	Dime size hail fell in Kissimmee. Thunderstorm winds blew a tree on to a house.

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

Cape Canaveral, FL (KXMR), launched 12:00Z, 11.6 hours before the alert went out and 75 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2066 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 768 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 6 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.

844 
WUUS52 KMLB 102336
SVRMLB
FLC095-097-110015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
733 PM EDT FRI AUG 10 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN ORANGE COUNTY
  NORTHWESTERN OSCEOLA COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 815 PM EDT.

* AT 731 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A   
SEVERE THUNDERSTORM OVER MAGIC KINGDOM...AND ANOTHER SEVERE STORM 
NEAR BUNKER HILL IN EXTREME NORTHWEST OSCEOLA COUNTY...MOVING NORTH 
AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR UNIVERSAL STUDIOS AT 740 PM 
  NEAR WINDERMERE AT 745 PM 
  NEAR WINTER GARDEN...OCOEE...AT 805 PM 

FUNNEL CLOUDS WILL BE POSSIBLE WITH THESE STORMS.
  
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.

$$

LAT...LON 2835 8165 2812 8145 2861 8131 2878 8141
          2878 8166

28

Nearby

Severe Thunderstorm Warnings in Florida, 2001 Every 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.