Alert archive / Florida / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 25, NWS Miami, FL

May 20, 1995Collier County, Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 20, 1995, 3:51 AM EDT for Collier County, Miami-Dade County, Florida. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
May 20, 1995, 3:51 AM EDT (07:51 UTC)
Expired
May 20, 1995, 5:00 AM EDT
In force
69 min
Issued by
NWS Miami, FL
Area
Whole counties

Counties Collier County, FL, Miami-Dade County, FL

The radar

The Miami radar (KAMX), 59 km from the middle of the area, began a volume at 07:53 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

Key West, FL (KEYW), launched 00:00Z, 7.9 hours before the alert went out and 164 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, Key West, FL at 00:00Z on 1995-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1362 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, Key West, FL at 00:00Z on 1995-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
1362 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1082 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 200756
SVRMIA
FLC025-021-200900-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
351 AM EDT SAT MAY 20 1995
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST FLORIDA
 
   ...NORTHWESTERN DADE COUNTY
 
IN SOUTHWEST FLORIDA
 
   ...SOUTHEASTERN COLLIER COUNTY
 
A SEVERE THUNDERSTORM WAS INDICATED BY RADAR JUST EAST OF MONROE STATION
IN SOUTHEASTERN COLLIER COUNTY AT 350 AM. THIS THUNDERSTORM WAS MOVING
EAST ALONG HIGHWAY 41 AND WILL BE APPROACHING KROME AVE IN NORTHWEST
DADE COUNTY AROUND 5 AM.
 
DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK
SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE
TELEPHONES OR ELECTRICAL APPLIANCES.

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 5:00 AM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach60 min
May 20, 8:22 AM EDTSevere Thunderstorm WarningMFLMiami-Dade68 min

Nearby

Severe Thunderstorm Warnings in Florida, 1995Every severe thunderstorm warning in 1995

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.