Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 107, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 12, 1990, 10:32 PM CDT for Escambia County, Alabama. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1990, 10:32 PM CDT (03:32 UTC)
- Expired
- May 12, 1990, 11:00 PM CDT
- In force
- 28 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Escambia 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 00:00Z, 3.5 hours before the alert went out and 197 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
- 83 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1545 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 235 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 130334 SVRMOB ALC053-130400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 1032 PM CDT SAT MAY 12 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...SOUTHWESTERN ESCAMBIA COUNTY AT 1031 PM A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 6 MILES WEST OF ATMORE MOVING TOWARD THE EAST-SOUTHEAST AT 30 MPH. LARGE HAIL AND DAMAGING THUNDERSTORM WINDS ARE LIKELY WITH THIS THUNDERSTORM. 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 BUSINESS. 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, May 12, 6:26 PM CDT, 4 hours 6 minutes before
ALZ013-015-016-130030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 624 PM CDT SAT MAY 12 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF SOUTHWEST ALABAMA UNTIL 1100 PM... AT 620 PM THE MOBILE RADAR SHOWED A BROKEN LINE OF STRONG THUNDERSTORMS FROM CHOCTAW COUNTY ALABAMA WEST SOUTHWEST INTO SOUTHERN MISSISSIPPI. THE THUNDERSTORMS WERE MOVING TOWARD THE EAST AT 35 MPH. RESIDENTS IN WASHINGTON AND CLARKE COUNTIES OF ALABAMA SHOULD BE ALERT FOR THE POSSIBILITY OF SEVERE WEATHER WITHIN THE NEXT TWO HOURS.
Special weather statement, May 12, 8:40 PM CDT, 1 hour 52 minutes before
ALZ013-015-016-MSZ014-013-130245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 838 PM CDT SAT MAY 12 1990 ...A TORNADO WATCH IS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI UNTIL 200 AM... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF SOUTHWEST ALABAMA UNTIL 1100 PM... AT 835 PM THE MOBILE RADAR INDICATED A SOLID LINE OF STRONG THUNDERSTORMS FROM GROVE HILL ALABAMA WEST-SOUTHWEST ACROSS STATE LINE MISSISSIPPI TO WEST OF HATTIESBURG. THE LINE WAS MOVING TOWARD THE EAST-SOUTHEAST AT 30 MPH. THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...AND POSSIBLE HAIL. RAINFALL RATES OF TWO INCHES IN AN HOUR WILL CAUSE FLOODING OF STREETS AND ROADS AND SMALL STREAMS WILL RISE RAPIDLY. RESIDENTS LIVING NEAR STREAMS SHOULD BE ON THE LOOKOUT FOR RISING WATER AND MOTORISTS SHOULD DRIVE WITH EXTREME CAUTION. RESIDENTS SHOULD REMAIN ALERT FOR THE POSSIBILITY OF SEVERE WEATHER THIS EVENING.
Special weather statement, May 12, 9:51 PM CDT, 41 minutes before
ALZ013-015-016-MSZ014-013-130345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 949 PM CDT SAT MAY 12 1990 ...A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI UNTIL 200 AM SUNDAY... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE FOLLOWING SOUTHWEST ALABAMA COUNTIES...MOBILE...BALDWIN...MONROE...CONECUH AND ESCAMBIA... AT 945 PM THE MOBILE RADAR INDICATED A LINE OF STRONG THUNDERSTORMS FROM 8 MILES NORTH OF MONROEVILLE TO CITRONELL. ANOTHER SHORT LINE OF STRONG THUNDERSTORMS WERE LOCATED FROM BUCKATUNNA TO BROOKLYN IN SOUTHEAST MISSISSIPPI. THE STORMS WERE MOVING TOWARD THE EAST-SOUTHEAST AT 30 MPH. IT APPEARS THAT THE STORMS NEAR CITRONELLE WILL PASS JUST TO THE NORTH OF THE CITY OF MOBILE SHORTLY BEFORE MIDNIGHT. HOWEVER THE STORMS OVER SOUTHEAST MISSISSIPPI SHOULD MOVE INTO THE MOBILE AREA AFTER MIDNIGHT. THESE THUNDERSTORMS ARE PRODUCING COPIOUS AMOUNTS OF RAINFALL. AS THEY MOVE THROUGH...RESIDENTS CAN EXPECT UP TO 2 INCHES OF RAINFALL PER HOUR. THAT WILL BE SUFFICIENT TO CAUSE FLOODING OF STREETS AND ROADS AND STREAMS IN THE AREA WILL APPROACH BANKFULL. IN ADDITION TO THE RAINFALL...THE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING AND POSSIBLE HAIL. PEA-SIZE HAIL WAS REPORTED IN CHATOM ALABAMA IN WASHINGTON COUNTY SHORTLY AFTER 900 PM.
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.