Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 135, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jun 28, 1990, 5:17 PM CDT for Clarke County, Alabama. It was in force for 58 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
- Jun 28, 1990, 5:17 PM CDT (22:17 UTC)
- Expired
- Jun 28, 1990, 6:15 PM CDT
- In force
- 58 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Clarke 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 |
|---|---|---|---|
| Jun 28, 5:30 PM CDT | Hail 0.75 | Clarke, 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, 10.3 hours before the alert went out and 148 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
- 19 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -18 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 KMOB 282218 SVRMOB ALC025-282315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 517 PM CDT THU JUN 28 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...CENTRAL CLARKE COUNTY AT 515 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM BETWEEN GROVE HILL AND JACKSON. THE STORM WAS MOVING TO THE WEST AT 15 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 BU(SINESS. HEAVY RAINS FLOOD 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, Jun 28, 2:38 PM CDT, 2 hours 39 minutes before
FLZ001-002-282030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 235 PM CDT THU JUN 28 1990 ...THUNDERSTORMS WITH VERY HEAVY RAINS WERE OVER THE WEST PART OF THE FLORIDA PANHANDLE... THUNDERSTORMS...SOME WITH VERY HEAVY RAINS...WERE SCATTERED OVER THE FLORIDA PANHANDLE...SOUTH ALABAMA...AND SOUTHEAST MISSISSIPPI. THE THUNDERSTORMS WITH THE HEAVIER RAINS WERE MOSTLY OVER THE CENTRAL PORTIONS OF ESCAMBIA...SANTA ROSA...AND OKALOOSA COUNTIES. THE THUNDERSTORMS WERE MOVING WEST-NORTHWEST AT 10 MILES AN HOUR. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAINS REDUCING VISIBILITY AND CREATING BRIEF FLOODING OF POOR DRAINAGE AREAS ...GUSTY ZWINDS AROUND 35 MILES AN HOUR...FREQUENT LIGHTNING STRIKES... AND POSSIBLE SMALL HAIL. PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS.
Local storm report, Jun 28, 4:16 PM CDT, 1 hour 1 minute before
ATTN SELS STORM REPORT NATIONAL WEATHER SERVICE MOBILE AL 413 PM CDT SUN JUN 3 1990 THE BALDWIN COUNTY FIRE DEPARTMENT REPORTED TELEPHONE LINES...POWER LINES...AND TREES DOWN IN BAY MINETTE. THIS DAMAGE HAPPENED BETWEEN 345 AND 400 PM. ALSO...WE HAVE RECEIVED SEVERAL REPORTS OF MARBLE SIZED AND SMALLER HAIL IN BAY MINETTE. ESTIMATED WINDS OF 55 TO 75 MPH HAVE ALSO BEEN REPORTED.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 3:32 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin | 43 min |
| Jun 28, 4:23 PM CDT | Severe Thunderstorm Warning | MOB | Mobile | 67 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.