Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 28, NWS Melbourne, FL

March 27, 2003Orange County, Seminole County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Mar 27, 2003, 5:45 PM EST for Orange County, Seminole County, Florida. It was in force for 45 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: Mar 27, 2003, 5:45 PM EST (22:45 UTC)
Expired: Mar 27, 2003, 6:30 PM EST
In force: 45 min
Issued by: NWS Melbourne, FL
Area: Counties, with a storm outline in the text

Counties Orange County, FL, Seminole County, FL

The radar

The Melbourne radar (KMLB), 103 km from the middle of the area, began a volume at 22:45 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, 10.8 hours before the alert went out and 99 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: 1036 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 942 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

918 
WUUS52 KMLB 272245
SVRMLB
FLC095-117-272330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
544 PM EST THU MAR 27 2003

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ORANGE COUNTY
  SEMINOLE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 630 PM EST

* AT 543 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER APOPKA...OR ABOUT 3 MILES SOUTHEAST
  OF LAKE APOPKA...MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL...
  MOVE ACROSS NORTHWEST ORANGE COUNTY INCLUDING APOPKA AND WEKIVA 
SPRINGS STATE PARK AND INTO WESTERN SEMINOLE COUNTY ALONG THE I 4 
CORRIDOR.   PERSONS SHOULD TAKE COVER IMMEDIATELY 

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN 
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH 
LITTLE OR NO WARNING. IF THE STORM APPROACHES YOU...MOVE TO AN 
INTERIOR ROOM ON THE LOWEST FLOOR.

LAT...LON 2863 8172 2851 8158 2873 8113 2892 8127

$$

52

The office that day

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

Issued	Product	Office	Lasted
Mar 27, 1:55 PM EST	Special Marine Warning	MLB	110 min
Mar 27, 2:19 PM EST	Special Marine Warning	MLB	116 min
Mar 27, 2:45 PM EST	Special Marine Warning	MLB	2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2003 Every severe thunderstorm warning in 2003

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.