Alert archive / Alabama / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 34, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jul 6, 1987, 1:28 PM CDT for Covington County, Alabama. It was in force for 47 min.
The area
The counties it named.
The facts
- Issued
- Jul 6, 1987, 1:28 PM CDT (18:28 UTC)
- Expired
- Jul 6, 1987, 2:15 PM CDT
- In force
- 47 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Covington County, AL
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
Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 6.5 hours before the alert went out and 86 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.
- Mixed-layer CAPE
- 1372 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 806 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMGM 061828
SVRMGM
ALC039-061915-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
128 PM CDT MON JUL 6 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 215 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH ALABAMA
...COVINGTON
AT 1 35PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTH OF
ANDALUSIA MOVING TOWARD THE NORTH AT 20 MILES AN HOUR.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FL.OOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 6, 11:48 AM CDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 1149 AM CDT MON JUL 6 1987 ...THUNDERSTORMS RUMBLE OVER SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI... AT 1147 AM CDT MOBILE RADAR SHOWED NUMEROUS THUNDERSTORMS OVER SOUTHWEST ALABAMA AND EXTREME SOUTHEAST MISSISSIPPI. HEAVIEST RAINS WERE DETECTED...JUST EAST OF JACKSON ALABAMA...NEAR MOUNT VERNON... JUST WEST OF PERDIDO...OVER WESTERN MOBILE...AND FROM NEAR BAYOU LA BATRE ALABAMA TO WEST OF HURLEY MISSISSIPPI. SOME OF THESE STORMS MAY PRODUCE HAIL AND STRONG GUSTY WINDS AS THEY MOVE TO THE NORTH AT ABOUT 15 MPH. THE STORMS CONTINUE TO REDEVELOP OVER SOUTHERN MOBILE COUNTY AND THEN MOVE NORTHWARD...SO IT LOOKS LIKE A SOGGY AFTERNOON FOR SOUTHWEST ALABAMA.
Special weather statement, Jul 6, 12:49 PM CDT, 39 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 1235 PM CDT MON JUL 6 1987 AT 1230 PM CDT...A VERY STRONG THUNDERSTORM WAS OVER NORTH WALTON COUNTY ABOUT 15 MILES EAST OF CRESTVIEW...AND WAS MOVING NORTH AT 20 MILES AN HOUR. OTHER THUNDERSTORMS...SOME STRONG...WERE SCATTERED OVER NORTHWEST FLORIDA...SOUTH AND SOUTHWEST ALABAMA...SOUTHEAST MISSISSIPPI... SOUTHEAST LOUISIANA...AND THE ADJOINING COASTAL WATERS. SOME OF THE STRONGER THUNDERSTORMS WERE 10 MILES NORTH OF MILTON... 15 MILES NORTHWEST OF CRESTVIEW...AND JUST NORTH OF ATMORE ALABAMA. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN... GUSTY WINDS AROUND 45 MILES AN HOUR...FREQUENT LIGHTNING...POSSIBLE SMALL HAIL...AND SOME BRIEF FLOODING OF POOR DRAINAGE AREAS. PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS AND EXERCISE THUNDERSTORM AND LIGHTNING SAFETY RULES AS THE THUNDER- STORMS CONTINUE TO DEVELOP AND MOVE THROUGH THE AREA.
Nearby
Severe Thunderstorm Warnings in Alabama, 1987Every severe thunderstorm warning in 1987
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.