Alert archive / Alabama / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 94, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Nov 20, 1986, 10:20 AM CST for Mobile County, Alabama. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Nov 20, 1986, 10:20 AM CST (16:20 UTC)
- Expired
- Nov 20, 1986, 11:20 AM CST
- In force
- 60 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.
The nearest sounding before it
Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 4.3 hours before the alert went out and 164 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
- 491 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 668 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 201621 SVRMOB ALC097-201720- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 1020 AM CST THU NOV 20 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING UNTIL 1120 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY: IN SOUTHWEST ALABAMA...MOBILE AT 1020 AM CST THE MOBILE RADAR SHOWED A LINE OF STRONG THUNDERSTORMS MOVING INTO NORTHERN MOBILE COUNTY. DAMAGING WINDS, VERY HEAVY RAIN AND FREQUENT LIGHTNING SHOULD BE EXPECTED AS THIS LINE MOVES ACROSS MOBILE COUNTY DURING THE NEXT HOUR.
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, Nov 20, 7:50 AM CST, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 735 AM CST THU NOV 20 1986 AT 730 AM CST...HEAVY THUNDERSTORMS WERE SCATTERED IN A LINE THAT STRETCHED FROM NEAR CRESTVIEW FLORIDA TO PENSACOLA THEN ON SOUTHWEST INTO THE GULF. THUNDERSTORMS WERE HEAVIEST AND MOST NUMEROUS IN SOUTHERN ESCAMBIA COUNTY OF FLORIDA...JUST WEST OF PENSACOLA...AND IN THE SOUTHEAST CORNER OF BALDWIN COUNTY OF ALABAMA. THE THUNDERSTORMS WERE MOVING NORTHEAST ABOUT 35 MILES AN HOUR. VERY HEAVY RAIN CAN BE EXPECTED FROM THE THUNDERSTORMS AS THEY PASS THROUGH OR NEAR THE PENSACOLA AREA. MOTORISTS ARE URGED TO SLOW DOWN AND DRIVE WITH THEIR HEADLIGHTS ON. FLOODING OF STREETS AND LOW PLACES IN URBAN AREAS IS ALSO LIKELY.
Special weather statement, Nov 20, 9:18 AM CST, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL. 915 AM CST THU NOV 20 1986 ...A NEARLY SOLID LINE OF THUNDERSTORMS IS MOVING ACROSS SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA... AT 910 AM CST MOBILE RADAR SHOWED A NEARLY SOLID LINE OF THUNDERSTORMS EXTENDING FROM MONTGOMERY TO JACKSON ALABAMA AND ON SOUTHWESTWARD THROUGH LUMBERTON MISSISSIPPI. SOME OF THESE THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL AND STRONG GUSTY WINDS. THE HEAVIEST STORMS ARE LOCATED 10 MILES WEST OF JACKSON ALABAMA...NEAR WHATLEY...AND NEAR LUMBERTON. THIS LINE OF THUNDERSTORMS IS MOVING SOUTHEAST AT 25 MPH AND WILL MOVE THROUGH ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA DURING TMHE NEXT FEW HOURS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM CST FOR CLARKE COUNTY IN SOUTHWEST ALABAMA AND LAMAR COUNTY IN SOUTHEAST MISSISSIPPI. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER BULLETINS.
Special weather statement, Nov 20, 9:19 AM CST, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 915 AM CST THU NOV 20 1986 ...A NEARLY SOLID LINE OF THUNDERSTORMS IS MOVING ACROSS SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA... AT 910 AM CST MOBILE RADAR SHOWED A NEARLY SOLID LINE OF THUNDERSTORMS EXTENDING FROM MONTGOMERY TO JACKSON ALABAMA AND ON SOUTHWESTWARD THROUGH LUMBERTON MISSISSIPPI. SOME OF THESE THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL AND STRONG GUSTY WINDS. THE HEAVIEST STORMS ARE LOCATED 10 MILES WEST OF JACKSON ALABAMA...NEAR WHATLEY...AND NEAR LUMBERTON. THIS LINE OF THUNDERSTORMS IS MOVING SOUTHEAST AT 25 MPH AND WILL MOVE THROUGH ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA DURING THOE NEXT FEW HOURS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM CST FOR CLARKE COUNTY IN SOUTHWEST ALABAMA AND LAMAR COUNTY IN SOUTHEAST MISSISSIPPI. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER BULLETINS.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 11:25 AM CST | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 65 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1986Every severe thunderstorm warning in 1986
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.