Alert archive / Florida / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 16, NWS Melbourne, FL

June 1, 2002Seminole County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 1, 2002, 5:46 PM EDT for Seminole County, Florida. It was in force for 29 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: Jun 1, 2002, 5:46 PM EDT (21:46 UTC)
Expired: Jun 1, 2002, 6:15 PM EDT
In force: 29 min
Issued by: NWS Melbourne, FL
Area: Whole counties

County Seminole County, FL

The radar

The Melbourne radar (KMLB), 88 km from the middle of the area, began a volume at 21:46 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
Jun 1, 5:47 PM EDT	Hail 0.75	Fern Park, 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 nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.8 hours before the alert went out and 77 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: 1286 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 687 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

326 
WUUS52 KMLB 012146
SVRMLB
FLC117-012215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
544 PM EDT SAT JUN 1 2002

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 615 PM EDT.

* AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER FERN PARK AND NEAR CASSELBERRY AND   
  ALTAMONTE SPRINGS. THE STORM WAS NEARLY STATIONARY.

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 2861 8124 2864 8133 2864 8145 2870 8145
          2874 8140 2872 8124

MJG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 6:12 PM EDT	Severe Thunderstorm Warning	MLB	Orange	33 min
Jun 1, 6:43 PM EDT	Severe Thunderstorm Warning	MLB	Orange	32 min
Jun 1, 6:56 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	49 min
Jun 1, 7:09 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	36 min

Nearby

Severe Thunderstorm Warnings in Florida, 2002 Every severe thunderstorm warning in 2002

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.