Alert archive / Florida / Tornado Warnings in 1990

Tornado Warning 12, NWS Tallahassee, FL

April 10, 1990Escambia County, Florida

NWS Tallahassee, FL issued this tornado warning at Apr 10, 1990, 4:52 PM CDT for Escambia County, Florida. It was in force for 38 min. 3 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: Apr 10, 1990, 4:52 PM CDT (21:52 UTC)
Expired: Apr 10, 1990, 5:30 PM CDT
In force: 38 min
Issued by: NWS Tallahassee, FL
Area: Whole counties

County Escambia County, FL

The radar

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

What was reported inside it

Time	Report	Where
Apr 10, 5:00 PM CDT	Thunderstorm Wind 0	Escambia, FL
Apr 10, 5:15 PM CDT	Thunderstorm Wind 0	Escambia, FL
Apr 10, 5:20 PM CDT	Thunderstorm Wind 0	Escambia, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.9 hours before the alert went out and 230 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: 204 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 597 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPNS 102152
TORPNS
FLC033-102230-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PENSACOLA FL
452 PM CDT TUE APR 10 1990
 
THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST FLORIDA
 
   ...ESCAMBIA COUNTY
 
 
 
 
WEATHER SERVICE RADAR SHOWED A POSSIBLE TORNADO NEAR THE PERDIDO RIVER
WEST OF MOINO MOVING NORTHEAST AT 40 MILES AN HOUR.
 
DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO.  CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS.  IF YOU ARE CAUGHT IN THE PATH OF
A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING.  IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 5:44 PM CDT	Severe Thunderstorm Warning	TAE	Santa Rosa	46 min
Apr 10, 6:04 PM CDT	Severe Thunderstorm Warning	TAE	Okaloosa	41 min

Nearby

Tornado Warnings in Florida, 1990 Every tornado warning in 1990 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.