Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 1, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jan 5, 1990, 9:03 PM CST for Mobile County, Alabama. It was in force for 42 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
- Jan 5, 1990, 9:03 PM CST (03:03 UTC)
- Expired
- Jan 5, 1990, 9:45 PM CST
- In force
- 42 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Mobile 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 |
|---|---|---|---|
| Jan 5, 9:25 PM CST | Hail 0.75 | Mobile, 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 3.1 hours before the alert went out and 152 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
- 160 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 137 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 060302 SVRMOB ALC097-060345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 903 PM CST FRI JAN 5 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...CENTRAL MOBILE COUNTY AT 900 PM CST A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 8 MILES SOUTHWEST OF THE MOBILE AIRPORT MOVING TOWARD THE NORTHEAST AT 30 MPH. LARGE HAIL IS INDICATED IN THIS THUNDERSTORM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTVION 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, Jan 5, 5:08 PM CST, 3 hours 55 minutes before
ALZ016-MSZ013-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 508 PM CST FRI JAN 5 1990 ...PATCHY DENSE FOG OVER COASTAL ALABAMA AND MISSISSIPPI... COASTAL ALABAMA AND MISSISSIPPI HAS BEEN BLANKETED WITH FOG MOST OF THE DAY. THE FOG HAS BECOME THICKER DURING THE PAST HOUR. THE VISIBILITY AT THE MOBILE BATES FIELD AIRPORT WAS NEAR ZERO. TRAVELERS ALONG THE ALABAMA AND MISSISSIPPI GULF COAST SHOULD USE EXTREME CAUTION TONIGHT. USE LOW BEAM HEADLIGHT...AND SEATBELTS...AND SLOW DOWN. VISIBILITIES WILL NOT IMPROVE UNTIL AFTER DAYBREAK SATURDAY MORNING.
Special weather statement, Jan 5, 7:25 PM CST, 1 hour 38 minutes before
ALC003-097-MSC045-047-059-060300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 725 PM CST FRI JAN 5 1990 ...A DENSE FOG ADVISORY IS IN EFFECT FOR THE ALABAMA AND MISSISSIPPI COASTS FOR TONIGHT... ...HEAVY RAINFALL POSSIBLE FOR THE MISSISSIPPI AND ALABAMA COASTAL AREAS FOR TONIGHT... AT 715 PM THE MOBILE RADAR SHOWED A LARGE AREA OF RAIN AND SHOWERS MOVING EAST-NORTHEAST ACROSS SOUTHEAST MISSISSIPPI IN TO SOUTHWEST ALABAMA. A CLUSTER OF THUNDERSTORMS WAS DEVELOPING IN THE COASTAL WATERS SOUTH OF THE BILOXI-GULFPORT AREA. THE AREA OF RAIN AND THUNDERSTORMS IS EXPECTED TO CONTINUE TO DEVELOP AND MOVE EAST-NORTHEAST TONIGHT. SOME AREAS MAY RECEIVE AS MUCH AS AN INCH OF RAINFALL PER HOUR IN THE STRONGER THUNDERSTORMS. THE RAINFALL...COUPLED WITH THE DENSE FOG NEAR THE COAST...WILL PRODUCE VERY HAZARDOUS DRIVING CONDITIONS FOR THE REMAINDER OF TONIGHT. WITH THE GROUND NEARLY SATURATED ALREADY...ADDITIONAL HEAVY RAINFALL WILL CAUSE FLOODING OF STREETS AND ROADS. SMALL STREAMS ARE LIKELY TO RISE ALSO. TRAVEL ALONG THE MISSISSIPPI AND ALABAMA COASTS TONIGHT SHOULD BE ATTEMPTED ONLY WITH GREAT CAUTION.
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.