Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 1, NWS Key West, FL

April 14, 2000Monroe County, Florida

NWS Key West, FL issued this severe thunderstorm warning at Apr 14, 2000, 8:54 AM EDT for Monroe County, Florida. It was in force for 96 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 14, 2000, 8:54 AM EDT (12:54 UTC)
Expired
Apr 14, 2000, 10:30 AM EDT
In force
96 min
Issued by
NWS Key West, FL
Area
Whole counties

County Monroe County, FL

The radar

The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 12:55 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

Miami, FL (KMFL), launched 12:00Z, 0.9 hours before the alert went out and 69 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, Miami, FL at 12:00Z on 2000-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1605 joules per kilogram.LCLLFCEL10008507005003002001001 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, Miami, FL at 12:00Z on 2000-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.193958Sfc1 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
1605 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.8
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KEYW 141258
SVREYW
FLC087-141430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
854 AM EDT FRI APR 14 2000

THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  IN SOUTHERN FLORIDA...THE LOWER KEYS IN MONROE COUNTY
  AND ADJACENT COASTAL WATERS

* UNTIL 1030 AM EDT

* AT 851 AM EDT... DOPPLER RADAR DETECTED A LINE OF DEVELOPING
  SEVERE THUNDERSTORMS FROMF 40 MILES NORTH OF THE MARQUESAS
  KEYS...TO 20 MILES WEST OF KEY WEST...SOUTH TO THE COAST
  OF CUBA SOUTH OF THE MARQUESAS KEYS.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM ARE...KEY WEST
  ...THE MARQUESAS KEYS...AND ALL THE LOWER KEYS UP TO BIG PINE
  KEY.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. SEEK SHELTER
IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES
OR ELECTRICAL APPLIANCES.

CLB


Nearby

Severe Thunderstorm Warnings in Florida, 2000Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.