Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 146, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Aug 20, 1990, 6:30 PM CDT for Greene County, Hale County, Alabama. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Aug 20, 1990, 6:30 PM CDT (23:30 UTC)
- Expired
- Aug 20, 1990, 7:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Greene County, AL, Hale 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 12:00Z, 11.5 hours before the alert went out and 56 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 13 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 KBHM 202331 SVRBHM ALC063-065-210015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 630 PM CDT MON AUG 20 1990 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH ALABAMA ...GREENE COUNTY...HALE COUNTY AT 628 PM A SEVERE THUNDERSTORM WAS LOCATED NEAR AKRON IN WESTERN HALE COUNTY NEAR THE GREENE COUNTY LINE. THIS THUNDERSTORM SHOULD MOVE INTO GREENE COUNTY DURING THE NEXT HALF HOUR AS IT MOVES SOUTHWEST NEAR 10 MILES AN HOUR. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
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, Aug 20, 1:31 PM CDT, 4 hours 59 minutes before
ALZ004>009-011-201930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 130 PM CDT MON AUG 20 1990 SHOWERS AND A FEW THUNDERSTORMS ARE FIRING UP QUICKLY ACROSS CENTRAL ALABAMA THIS AFTERNOON. AT 125 PM WEATHER SERVICE RADAR AT CENTREVILLE INDICATED A BROKEN LINE OF SHOWERS AND STORMS WHICH EXTENDED FROM NEAR COLLINSVILLE IN DE KALB COUNTY WESTWARD INTO NORTHERN CULLMAN...WINSTON AND MARION COUNTIES. ANOTHER STRONG STORM WAS IN CLAY COUNTY ABOUT 10 MILES EAST OF ASHLAND. MOVEMENT OF THE STORMS WERE SLOW AND ERRATIC AND BECAUSE OF THIS...VERY HEAVY DOWNPOURS ARE POSSIBLE RESULTING IN LARGE AMOUNTS OF RAIN IN A SHORT TIME. IN ADDITION TO THE HEAVY RAIN...STRONG GUSTY WINDS AND FREQUENT LIGHTNING CAN BE EXPECTED WITH THESE STORMS. PERSONS SHOULD MOVE INSIDE A STRONG BUILDING SHOULD THREATENING WEATHER APPROACH. CONTINUE TO LISTEN TO NOAA WEATHER RADIO...LOCAL TV OR RADIO FOR LATER WEATHER UPDATES AND STATEMENTS.
Special weather statement, Aug 20, 2:04 PM CDT, 4 hours 26 minutes before
ALZ004>009-011-202000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 202 PM CDT MON AUG 20 1990 STRONG THUNDERSTORMS WERE DEVELOPING IN NORTHERN ALABAMA THIS AFTERNOON. AT 200 PM WEATHER SERVICE RADAR AT CENTREVILLE SHOWED NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE NORTH HALF OF ALABAMA. SOME OF THE STORMS WERE QUITE STRONG. ONE OF THE STORMS...IN CULLMAN COUNTY...PRODUCED MARBLE SIZED HAIL...VERY STRONG GUSTY WINDS AND HEAVY DOWNPOURS AROUND 140 PM. LIGHT TO MODERATE SHOWERS WERE WIDELY SCATTERED OVER CENTRAL ALABAMA. WITH HOT AFTERNOON TEMPERATURES...A FEW THESE SHOWERS MAY BUILD INTO THUNDERSTORMS WITHIN A VERY SHORT TIME. ALABAMIANS NEED TO KEEP THIS IN MIND THIS AFTERNOON AND BE PREPARED TO MOVE TO SAFE SHELTER IF THREATENING WEATHER APPROACHES YOU. CONTINUE TO LISTEN TO NOAA WEATHER RADIO...OR LOCAL NEWS MEDIA FOR LATER WEATHER UPDATES AND STATEMENTS.
Special weather statement, Aug 20, 3:12 PM CDT, 3 hours 18 minutes before
ALZ010-011-012-014-017-018-202300-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MONTGOMERY AL
315 PM CDT MON AUG 20 1990
IF YOU THINK IT HAS BEEN HOT THE LAST SEVEN DAYS...YOU ARE RIGHT...
LISTED BELOW ARE MAXIMUM TEMPERATURES AT MONTGOMERY FOR THE LAST
SEVEN DAYS AND THE LAST TIME 100 DEGREE MAXIMUMS OCCURRED FOR SEVEN
CONSECUTIVE DAYS...
1990 AUGUST 14TH 101 1954 AUGUST 11TH 101
15TH 101 12TH 102
16TH 102 13TH 101
17TH 100 14TH 103
18TH 101 15TH 101
19TH 101 16TH 102
20TH 100 3PM 17TH 100
AUGUST 195_4 SHOWED 14 DAYS OF 100 OR ABOVE MAXIMUM TEMPERATURES.
SO FAR THIS AUGUST HAS PRODUCED 8 DAYS. SEVERAL OTHER PERIODS SINCE
1872 SAW 6 CONSECUTIVE DAYS WITH MAXIMUMS OF 100 OR ABOVE.Special weather statement, Aug 20, 3:33 PM CDT, 2 hours 57 minutes before
ALZ010-011-012-014-017-018-202230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY AL 330 PM CDT MON AUG 20 1990 AT 320 PM CDT WEATHER RADAR AT MONTGOMERY SHOWED STRONG THUNDERSTORMS MOVING INTO HENRY AND HOUSTON COUNTIES ALABAMA FROM GEORGIA. THE THUNDERSTORMS WERE IN A SHORT LINE BETWEEN FORT GAINES GEORGIA AND AND MARIANA FLORIDA. MOVEMENT WAS WEST SOUTHWEST AT 15 MPH. OTHER STRONG THUNDERSTORMS WERE SCATTERED OVER EAST ALABAMA FROM WADLEY ACROSS LAKE MARTIN TO NEAR WETUMPKA ALABAMA...AND OVER BARBOUR COUNTY ...AND OVER GENEVA COUNTIES ALABAMA. DUE TO THE HIGH TEMPERATURES ALL THESE THUNDERSTORMS HAVE THE CAPABILITY TO DEVELOP RAPIDLY. GUSTY SURFACE WINDS...DANGEROUS |LIGHTNING...HAIL...AND HEAVY DOWNPOURS MAY OCCUR WITH ANY OF THESE THUNDERSTORMS WITH VERY LITTLE ADVANCE WARNING.
Special weather statement, Aug 20, 5:20 PM CDT, 1 hour 10 minutes before
ALZ014-017-018-210015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY AL 515 PM CDT MON AUG 20 1990 AT 510 PM RADAR SHOWED SEVERAL CLUSTERS OF STRONG THUNDERSTORMS OVER SOUTH ALABAMA. THE MOST INTENSE STORMS WERE BETWEEN DOTHAN AND ENTERPRISE AND MOVING WEST AT 10 MPH. OTHER STRONG THUNDERSTORMS WERE OVER SOUTHERN CHILTON COUNTY AND MOVING SOUTHWEST. THESE STORMS WILL BE MOVING INTO NORTHERN DALLAS COUNTY BY 530 PM. A FEW STRONG STORMS WERE BETWEEN LOUISVILLE AND TROY. THE THUNDERSTORMS WILL BE PRODUCING STRONG GUSTY WINDS...EXTREMELY DANGEROUS LIGHTNING...TORRENTIAL RAIN...AND POSSIBLY SOME HAIL UNTIL AROUND SUNSET. PLEASE REMAIN ALERT AND READY TO GO TO A SAFE [SHELTER IF ONE OF THE STORMS APPROACHES. DEVAUGHN
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 2:05 PM CDT | Severe Thunderstorm Warning | BMX | Cullman | 25 min |
| Aug 20, 2:35 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 25 min |
| Aug 20, 2:54 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Jefferson | 36 min |
| Aug 20, 3:25 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 35 min |
| Aug 20, 3:42 PM CDT | Severe Thunderstorm Warning | BMX | Walker | 33 min |
| Aug 20, 4:11 PM CDT | Severe Thunderstorm Warning | BMX | Shelby | 34 min |
| Aug 20, 4:15 PM CDT | Severe Thunderstorm Warning | BMX | Fayette | 30 min |
| Aug 20, 4:34 PM CDT | Severe Thunderstorm Warning | BMX | Bibb | 26 min |
| Aug 20, 4:43 PM CDT | Severe Thunderstorm Warning | BMX | Fayette | 32 min |
| Aug 20, 4:56 PM CDT | Severe Thunderstorm Warning | BMX | Bibb | 34 min |
| Aug 20, 5:28 PM CDT | Severe Thunderstorm Warning | BMX | Perry | 32 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.