Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 185, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Dec 3, 1990, 9:20 AM CST for Conecuh County, Alabama. It was in force for 25 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
- Dec 3, 1990, 9:20 AM CST (15:20 UTC)
- Expired
- Dec 3, 1990, 9:45 AM CST
- In force
- 25 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Conecuh 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 |
|---|---|---|---|
| Dec 3, 9:30 AM CST | Thunderstorm Wind 0 | Conecuh, 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
Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 3.3 hours before the alert went out and 116 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
- 143 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 763 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 233 m²/s²
- 0-3 km storm-relative helicity
- 279 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 031521 SVRMOB ALC035-031545- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 920 AM CST MON DEC 3 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...EASTERN CONECUH COUNTY AT 920 AM WEATHER SERVICE RADAR AT MONTGOMERY INDICATED A SEVERE THUNDERSTORM OVER EASTERN CONECUH COUNTY. THE STORM WAS MOVING TO THE NORTHEAST AT 45 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT4 BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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, Dec 3, 8:34 AM CST, 46 minutes before
FLZ001>004-031535- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PENSACOLA FL 835 AM CST MON DEC 3 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 100 PM CST FOR ALL OF THE COUNTIES OF NORTHWEST FLORIDA AND THE ADJACENT COASTAL WATERS. ...AT 830 AM CST...A LINE OF THUNDERSTORMS STRETCHED FROM NORTH BALDWIN COUNTY ALABAMA SOUTHWEST TO DAUPHIN ISLAND ALABAMA THEN CONTINUED SOUTHWEST TO THE MOUTH OF THE MISSISSIPPI RIVER. SOME OF THESE THUNDERSTORMS MAY PRODUCE STRONG WINDS...FREQUENT LIGHTNING AND HEAVY RAINS ALONG WITH THE POSSIBILITY OF A TORNADO. THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 20 MILES AN HOUR AND WILL MOVE INTO NORTHWEST ESCAMBIA COUNTY FLORIDA DURING THE NEXT FEW MINUTES.
Special weather statement, Dec 3, 8:37 AM CST, 43 minutes before
FLZ001>004-031535- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 835 AM CST MON DEC 3 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 100 PM CST FOR ALL OF THE COUNTIES OF NORTHWEST FLORIDA AND THE ADJACENT COASTAL WATERS. ...AT 830 AM CST...A LINE OF THUNDERSTORMS STRETCHED FROM NORTH BALDWIN COUNTY ALABAMA SOUTHWEST TO DAUPHIN ISLAND ALABAMA THEN CONTINUED SOUTHWEST TO THE MOUTH OF THE MISSISSIPPI RIVER. SOME OF THESE THUNDERSTORMS MAY PRODUCE STRONG WINDS...FREQUENT LIGHTNING AND HEAVY RAINS ALONG WITH THE POSSIBILITY OF A TORNADO. THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 20 MILES AN HOUR AND WILL MOVE INTO NORTHWEST ESCAMBIA COUNTY FLORIDA DURING THE NEXT FEW MINUTES.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 3, 7:18 AM CST | Tornado Warning | MOB | Mobile | 57 min |
| Dec 3, 7:39 AM CST | Tornado Warning | MOB | Mobile | 66 min |
| Dec 3, 8:20 AM CST | Tornado Warning | MOB | Baldwin | 55 min |
| Dec 3, 9:03 AM CST | Severe Thunderstorm Warning | MOB | Butler, Covington | 57 min |
| Dec 3, 9:57 AM CST | Severe Thunderstorm Warning | MOB | Covington, Crenshaw | 63 min |
| Dec 3, 10:25 AM CST | Severe Thunderstorm Warning | MOB | Coffee, Pike | 65 min |
| Dec 3, 10:51 AM CST | Severe Thunderstorm Warning | MOB | Barbour, Dale | 69 min |
| Dec 3, 10:51 AM CST | Severe Thunderstorm Warning | MOB | Geneva, Houston | 69 min |
| Dec 3, 11:05 AM CST | Severe Thunderstorm Warning | MOB | Henry | 55 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.