Alert archive / Alabama / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 49, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jul 6, 1987, 4:37 PM CDT for DeKalb County, Alabama. It was in force for 53 min. 1 report 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
- Jul 6, 1987, 4:37 PM CDT (21:37 UTC)
- Expired
- Jul 6, 1987, 5:30 PM CDT
- In force
- 53 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County DeKalb County, AL
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 | Remark |
|---|---|---|---|
| Jul 6, 5:00 PM CDT | Thunderstorm Wind 0 | Dekalb, AL |
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
Nashville Metro, TN (KBNA), launched 12:00Z, 9.6 hours before the alert went out and 199 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
- 2792 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 69 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 KHSV 062137
SVRHSV
ALC049-062230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
437 PM CDT MON JUL 6 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTH ALABAMA
...DEKALB
AT 435 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM BETWEEN FORT
PAYNE AND HAMMONDVILLE IN CENTRAL DE KALB COUNTY. THE THUNDERSTORM
HAS BEEN MOVING WEST AT 10 MPH.
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 FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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
DEA DLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.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, 1:10 PM CDT, 3 hours 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY AL 110 PM CDT MON JUL 6 1987 HEAVY THUNDERSTORMS MOVING INTO COVINGTON COUNTY OF SOUTH ALABAMA... AT 110PM CDT WEATHER RADAR SHOWED STRONG THUNDERSTORMS FROM 10 MILES SOUTHWEST OF ANDALUSIA INTO NORTHWEST FLORIDA NORTH OF DESTIN. THE THUNDERSTORMS WERE MOVING TOWARD THE NORTH AT 20 MPH. THE HEAVIEST THUNDERSTORMS WERE JUST SOUTHWEST OF ANDALUSIA ABOUT 10 MILES. LOCALLY HEAVY RAIN...STRONG GUSTY SURFACE WINDS...INTENSE LIGHTNING AND POSSIBLE HAIL MAY OCCUR NEAR THE HEAVIER STORMS. PERSONS IN COVINGTON...GENEVA AND BUTLER COUNTIES OF SOUTH ALABAMA SHOULD BE ON THE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
Local storm report, Jul 6, 2:53 PM CDT, 1 hour 44 minutes before
STORM REPORT NATIONAL WEATHER SERVICE MONTGOMERY AL 250 PM CDT MON JUL 06 1987 COVINGTON COUNTY... PEA TO MARBLE SIZE HAIL REPORTED SOUTHWEST OF ANDALUSIA. REPORT FROM RADIO STATION WKYD IN ANDALUSIA. HAIL OCCURRED AROUND 135PM CDT. PETTIT
Special weather statement, Jul 6, 4:07 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY AL 405 PM CDT MON JUL 6 1987 ...HEAVY THUNDERSTORMS MOVING THROUGH CENTRAL AND SOUTH ALABAMA... AT 4 PM CDT WEATHER RADAR SHOWED A VERY STRONG THUNDERSTORM MOVING FROM FLORIDA INTO HOUSTON COUNTY ALABAMA. OTHER STRONG THUNDERSTORMS WERE IN A CLUSTER FROM NEAR SELMA TO LUVERNE ALABAMA. THESE THUNDERSTORMS WERE ALSO MOVING NORTH. THE HEAVIER THUNDERSTORMS WILL PRODUCE DANGEROUS LIGHTNING...LOCALLY HEAVY RAIN...STRONG GUSTY SURFACE WINDS...AND POSSIBLY SMALL HAIL. PERSONS IN CENTRAL AND SOUTH ALABAMA SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS UNTIL SUNSET.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:58 PM CDT | Severe Thunderstorm Warning | BMX | Marengo | 32 min |
| Jul 6, 5:47 PM CDT | Severe Thunderstorm Warning | BMX | Marshall | 58 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.