Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 64, NWS Melbourne, FL

August 25, 2000Seminole County, Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Aug 25, 2000, 8:00 PM EDT for Seminole County, Volusia County, Florida. It was in force for 45 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 25, 2000, 8:00 PM EDT (00:00 UTC)
Expired: Aug 25, 2000, 8:45 PM EDT
In force: 45 min
Issued by: NWS Melbourne, FL
Area: Whole counties

Counties Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 101 km from the middle of the area, began a volume at 00:02 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 25, 8:05 PM EDT	Hail 0.75	Lake Mary, FL
Aug 25, 8:20 PM EDT	Hail 0.75	Winter Spgs, 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 00:00Z, 0.0 hours before the alert went out and 82 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: 1929 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1036 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 74 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 260001
SVRMLB
FLC117-127-260045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
800 PM EDT FRI AUG 25 2000

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 845 PM EDT

* AT 755 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LAKE MARY...MOVING SOUTHEAST AT 15 MPH.

* AT 755 PM EDT...A SKYWARN WEATHER SPOTTER REPORTED DIME SIZED HAIL IN
  THE TOWN OF LAKE MARY.

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 2884 8142 2865 8145 2861 8131 2862 8107
          2882 8107 2883 8130

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 8:15 PM EDT	Severe Thunderstorm Warning	MLB	Orange	45 min
Aug 25, 8:35 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	40 min

Nearby

Severe Thunderstorm Warnings in Florida, 2000 Every severe thunderstorm warning in 2000

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.