Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 171, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Aug 30, 1990, 1:44 PM CDT for Washington County, Alabama. It was in force for 61 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
- Aug 30, 1990, 1:44 PM CDT (18:44 UTC)
- Expired
- Aug 30, 1990, 2:45 PM CDT
- In force
- 61 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Washington 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 |
|---|---|---|---|
| Aug 30, 1:45 PM CDT | Thunderstorm Wind 0 | Washington, 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, 6.7 hours before the alert went out and 191 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
- 2253 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1256 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -28 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 KMOB 301844 SVRMOB ALC129-301945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 144 PM CDT THU AUG 30 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...WASHINGTON COUNTY AT 140 PM...MOBILE RADAR INDICATED A SEVERE THUNDERSTORM NEAR MILLRY. THIS THUNDERSTORM BLEW TREES DOWN AS IT MOVED THROUGH WAYNE COUNTY MISSISSIPPI EARLIER. THE STORM WAS MOVING SOUTHEAST AT 15 MPH AND WILL MOVE INTO THE CHATOM AREA IN THE NEXT 1/2 HOUR. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGZING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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 30, 1:38 PM CDT, 6 minutes before
FLZ001>004-282125- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 130 PM CDT THU AUG 30 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF NORTHWEST FLORIDA UNTIL 8 PM CDT. AT 130 PM CDT...THUNDERSTORMS HAD DEVELOPED IN LINES AND CLUSTERS ACROSS NORTHWEST FLORIDA AND SOUTHWEST ALABAMA. ONE QUARTER INCH HAIL WAS REPORTED IN THE FT. WALTON BEACH VICINITY AT 112 PM CDT AND WIND GUSTS TO AROUND 40 MPH. VUERY HEAVY RAINFALL..GUSTY WINDS...FREQUENT LIGHTNING...AND HAIL IS POSSIBLE WITH THE STRONGER THUNDERSTORMS. STAY TUNED FOR LATER STATEMENTS OR WARNINGS.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 12:39 PM CDT | Severe Thunderstorm Warning | MOB | Geneva, Houston | 66 min |
| Aug 30, 12:49 PM CDT | Severe Thunderstorm Warning | MOB | Clarke | 56 min |
| Aug 30, 2:00 PM CDT | Severe Thunderstorm Warning | MOB | Escambia | 45 min |
| Aug 30, 3:57 PM CDT | Severe Thunderstorm Warning | MOB | Mobile | 48 min |
| Aug 30, 4:05 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin | 40 min |
| Aug 30, 4:06 PM CDT | Severe Thunderstorm Warning | MOB | Dale, Henry | 69 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.