Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 31, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 1, 1990, 4:11 PM CDT for Chilton County, Alabama. It was in force for 64 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
- Apr 1, 1990, 4:11 PM CDT (21:11 UTC)
- Expired
- Apr 1, 1990, 5:15 PM CDT
- In force
- 64 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Chilton 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 |
|---|---|---|---|
| Apr 1, 5:13 PM CDT | Thunderstorm Wind 0 | Chilton, 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
Centreville/Bibb, AL (KCKL), launched 12:00Z, 9.2 hours before the alert went out and 45 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
- 667 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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, Apr 1, 12:41 PM CDT, 3 hours 30 minutes before
ALZ008-007-011-011840- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 1240 PM CDT SUN APR 1 1990 ...STRONG THUNDERSTORMS DEVELOPING IN ALABAMA... AT 1240 PM WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORM NEAR THE ALABAMA MISSISSIPPI BORDER...ABOUT 20 MILES WEST NORTHWEST OF ALICEVILLE IN PICKENS COUNTY. ANOTHER STRONG THUNDERSTORM WAS IN TALLEDEGA COUNTY ABOUT 10 MILES SOUTHWEST OF THE CITY OF TALLEDEGA. THIS STORM WILL AFFECT OR PAST CLOSE TO THE CITY OF ASHLAND IN CLAY COUNTY WITHIN THE HOUR. THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 30 MPH. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SOME HAIL.
Special weather statement, Apr 1, 1:41 PM CDT, 2 hours 30 minutes before
ALZ008-007-011-011940- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 140 PM CDT SUN APR 1 1990 AT 140 PM WEATHER SERVICE RADAR SHOWED A WEAKENING TREND OF THUNDERSTORMS IN PICKENS AND CLAY COUNTIES. THE THUNDERSHOWER IN CLAY COUNTY WILL AFFECT THE COMMUNTIES OF BARFIELD AND DELTA WITHIN THE NEXT 30 MINUTES OR SO. THE OTHER STORM IN PICKENS COUNTY HAS DISSIPATED. THESE THUNDERSHOWERS AND SHOWERS WERE MOVING TO THE EAST NORTHEAS3T AT 25 MPH. WEATHER SERVICE RADAR SHOWS MORE THUNDERSTORMS IN CENTRAL AND EASTERN MISSISSIPPI. THESE STORMS MAY AFFECT THE WEST CENTRAL COUNTIES BY 2 PM.
Special weather statement, Apr 1, 3:45 PM CDT, 26 minutes before
ALZ010-011-012-014-017-018-012245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY AL 343 PM CDT SUN APR 1 1990 AT 340 PM CDT...RADAR INDICATED A BAND OF THUNDERSTORMS OVER COOSA COUNTY IN SOUTH ALABAMA. THIS BAND EXTENDED WEST INTO WEST CENTRAL ALABAMA AND EAST MISSISSIPPI. MOVEMENT WAS EAST SOUTHEAST AT AROUND 30 MILES AN HOUR. THE THUNDERSTORMS IN COOSA COUNTY WILL PRODUCE DANGEROUS LIGHTNING ...GUSTY WINDS AND POSSIBLY SOME HAIL. THE STORMS IN WEST ALABAMA AND EAST CENTRAL MISSISSIPPI HAVE PRODUCED SOME HAIL. PERSONS IN SOUTH ALABAMA SHOULD STAY ABREAST OF THE WEATHER SITUATION THIS AFTERNOON AND EVENING AND LISTEN FOR LATER STATEMENTS OR POSSIBLE WARNINGS.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 2:27 PM CDT | Severe Thunderstorm Warning | BMX | Greene, Pickens | 48 min |
| Apr 1, 2:54 PM CDT | Severe Thunderstorm Warning | BMX | Hale, Tuscaloosa | 51 min |
| Apr 1, 3:17 PM CDT | Severe Thunderstorm Warning | BMX | Greene | 28 min |
| Apr 1, 3:54 PM CDT | Severe Thunderstorm Warning | BMX | Hale | 26 min |
| Apr 1, 4:03 PM CDT | Severe Thunderstorm Warning | BMX | Perry | 42 min |
| Apr 1, 4:11 PM CDT | Severe Thunderstorm Warning | BMX | Bibb | 36 min |
| Apr 1, 5:18 PM CDT | Severe Thunderstorm Warning | BMX | Chilton | 27 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.