Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 32, NWS Tallahassee, FL

March 30, 1990Bay County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 30, 1990, 9:00 AM CST for Bay County, Florida. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Mar 30, 1990, 9:00 AM CST (15:00 UTC)
Expired
Mar 30, 1990, 10:00 AM CST
In force
60 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Bay County, FL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Apalachicola Mun, FL (KAQQ), launched 12:00Z, 3.0 hours before the alert went out and 83 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, Apalachicola Mun, FL at 12:00Z on 1990-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1251 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, Apalachicola Mun, FL at 12:00Z on 1990-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 square meters per square second.1939Sfc1 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
1251 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
522 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPNS 301508
SVRPNS
FLC005-301600-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE PENSACOLA FL
900 AM CST FRI MAR 30 1990
 
THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL 1000 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST FLORIDA
 
   ...SOUTHERN BAY COUNTY
 
  AND FOR BOATERS AND MARINE INTERESTS ON THE COASTAL WATERS OF
 
  ...BAY
 
A SEVERE THUNDERSTORM WAS INCICATED BY RADAR 30 MILES SOUTHWEST
OF PANAMA CITY. MOVING TO THE NORTHEAST AT 35 MPH.
 
MARINE INTEREST IN THE PATH OF THIS STORMS SHOULD SEEK SAFE HARBOUR
IMMEDIATELY.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

Nearby

Severe Thunderstorm Warnings in Florida, 1990Every severe thunderstorm warning in 1990

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.