Alert archive / Alabama / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 12, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Mar 18, 1987, 9:00 PM CST for Lamar County, Alabama. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Mar 18, 1987, 9:00 PM CST (03:00 UTC)
- Expired
- Mar 18, 1987, 9:55 PM CST
- In force
- 55 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Lamar 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
Centreville/Bibb, AL (KCKL), launched 00:00Z, 3.0 hours before the alert went out and 128 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
- 162 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 742 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Mar 18, 3:05 PM CST, 5 hours 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 305 PM CST WED MAR 18 1987 STRONG THUNDERSTORMS IN THE BIRMINGHAM AREA WERE PRODUCING HAIL AT BLUFF PARK AND EASTWOOD MALL JUST BEFORE 3 PM CST. SOME OF THE HAIL WAS MARBLE SIZE. THE STRONGEST THUNDERSTORMS WERE ALONG THE SOUTH AND EAST EDGE OF THE CITY. THEY WILL MOVE NORTHEAST THROUGH EAST JEFFERSON AND ST CLAIR COUNTIES BETWEEN 3PM AND 4 PM. OTHER STRONG THUNDERSTORMS OVER NORTH BLOUNT COUNTY NORTH OF ONEONTA MAY ALSO PRODUCE HAIL AND GUSTY WINDS AS THEY MOVE NORTHEAST POSSIBLY INTO EXTREME NORTHWEST ETOWAH COUNTY. STILL ANOTHER STRONG THUNDERSTORM WAS OVER THE NORTH EDGE OF CULLMAN COUNTY ABOUT 10 MILES NORTH OF CULLMAN. ...BECAUSE OF COLD AIR ALOFT...IT DOES NOT TAKE A VERY STRONG THUNDERSTORM TO PRODUCE SMALL TO MARBLE SIZE HAIL TODAY. MANY OF THE THUNDERSTORMS TODAY THAT HAD HAIL GO UP TO A HEIGHT OF ONLY 25 THOUSAND FEET. NORMALLY THIS WOULD BE ONLY AN ORDINARY MODERATE THUNDERSHOWER.
Special weather statement, Mar 18, 3:21 PM CST, 5 hours 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY, AL 320 PM CST WED MAR 18 1987 AT 315 PM CST MONTGOMERY WEATHER RADAR SHOWED A LINE OF THUNDERSTORMS 10 TO 20 MILES WIDE EXTENDING FROM BIRMINGHAM SOUTH ACROSS SELMA TO NEAR WHATLEY IN SOUTHWEST ALABAMA. THE STRONGEST THUNDERSTORMS WERE LOCATED JUST NORTHEAST OF SELMA AND 15 MILES NORTHEAST OF WHATLEY. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT AROUND 40 MPH AND THE STRONGER THUNDERSTORMS WILL LIKELY PRODUCE BRIEF PERIODS OF HEAVY RAINS AND DANGEROUS LIGHTNING ALONG WITH STRONG GUSTY WINDS AND POSSIBLY SOME SMALL HAIL. THIS RAIN AND THUNDERSTORM ACTIVITY WILL LIKELY CONTINUE OVER THE AREA FOR THE NEXT FEW HOURS AND OTHER STRONG THUNDERSTORMS MAY DEVELOP.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 7:21 PM CST | Severe Thunderstorm Warning | BMX | Colbert, Franklin | 54 min |
| Mar 18, 7:21 PM CST | Severe Thunderstorm Warning | BMX | Marion | 54 min |
| Mar 18, 8:11 PM CST | Severe Thunderstorm Warning | BMX | Colbert, Franklin | 64 min |
| Mar 18, 8:11 PM CST | Severe Thunderstorm Warning | BMX | Marion | 64 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; the sounding from the Mesonet's radiosonde archive.