Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 173, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Aug 30, 1990, 2:42 PM CDT for Greene County, Mississippi. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Aug 30, 1990, 2:42 PM CDT (19:42 UTC)
- Expired
- Aug 30, 1990, 3:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Greene County, MS
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
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.7 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
- 2438 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 6 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 301943 SVRMOB MSC041-302030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 242 PM CDT THU AUG 30 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST MISSISSIPPI ...GREENE COUNTY AT 240 PM MOBILE RADAR INDICATED A SEVERE THUNDERSTORM IN NORTHERN GREENE COUNTY NEAR CARSON CITY. THE THUNDERSTORM WAS MOVING SOUTHEAST NEAR 10 MPH. 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 30, 1:38 PM CDT, 1 hour 4 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.
Local storm report, Aug 30, 2:10 PM CDT, 32 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
205 PM CDT THU AUG 30 1990
TIME CO/STATE EVENT
145 PM WASHINGTON/AL GROVE HILL STATE AND EOC DIRECTOR REPORTED
TREES{ AND POWER LINES DOWN IN MILLRY...ALSO
ROOFS OFF SEVERAL BUILDINGS.Local storm report, Aug 30, 2:34 PM CDT, 8 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
230 PM CDT THU AUG 30 1990
TIME CO/STATE EVENT
220 PM ESCAMBIA/AL STATE NURSERY IN POARCH WITH WIND EQUIPMENT
REPORTED SEVERAL GUSTS TO 40 MPH. ALSO...
NICKLE TO QUARTER SIZED HAIL. A GROCERY
CONTACT IN HUXFORD REPORTED DIME TO NICKLE
SIZED HAIL JUST SOUTHWEST OF HUXFORD.Special weather statement, Aug 30, 2:35 PM CDT, 7 minutes before
FLZ001>004-302030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 230 PM CDT THU AUG 30 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF NORTHWEST FLORIDA UNTIL 8 PM CDT. AT 225 PM CDT...THUNDERSTORMS WERE SCATTERED IN A 25 MILE WIDE AREA FROM THE FLORIDA PANHANDLE TO SOUTHEAST MISSISSIPPI. THE STORMS WERE OCCURRING FROM THE LAUREL...HATTIESBURG AREAS OF MISSISSIPPI...EAST AND SOUTHEAST ACROSS NORTHWEST FLORIDA TO NORTHERN BAY COUNTY. SEVERAL OF THESE THUNDERSTORMS INDICATED FREQUENT LIGHTNING...HAIL... GUSTY WINDS...AND VERY HEAVY RAIN. THE STRONGEST STORMS WERE PRESENTLY LOCATED IN BAY COUNTY NORTHWEST OF PANAMA CITY...AND IN ESCAMBIA COUNTY OF ALABAMA. MOVEMENTS WERE SOUTHEAST 20 TO 25 MPH.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 4:52 PM CDT | Severe Thunderstorm Warning | MOB | Pearl River | 38 min |
| Aug 30, 5:22 PM CDT | Severe Thunderstorm Warning | MOB | Harrison | 38 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 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.