Alert archive / Alabama / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 15, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 1986, 11:10 PM CST for Autauga County, Alabama. It was in force for 50 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
- Mar 12, 1986, 11:10 PM CST (05:10 UTC)
- Expired
- Mar 13, 1986, 12:00 AM CST
- In force
- 50 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Autauga 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 |
|---|---|---|---|
| Mar 12, 11:40 PM CST | Thunderstorm Wind 0 | Autauga, 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
Centreville/Bibb, AL (KCKL), launched 00:00Z, 5.2 hours before the alert went out and 66 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
- 107 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1390 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 358 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMGM 130513 SVRMGM ALC001-130600- BULLETIN...IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MONTGOMERY AL 1110 PM CST WED MAR 12 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1200 MIDNIGHT FOR AUTAUGA COUNTY IN SOUTH ALABAMA. AT 1110 PM RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM NEAR AUTAUGAVILLE SOUTHWARD TO SOUTHWEST LOWNDES COUNTY. THE SEVERE THUNDERSTORMS ARE MOVING TOdWARD THE NORTH NORTHEAST AT NEAR 50 MPH. JONES BLUFF DAM REPORTED PEA SIZE HAIL...VERY HEAVY RAIN... SEVERE LIGHTNING AND WINDS TO 50 MPH AT 11PM CST.
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
Local storm report, Mar 12, 6:59 PM CST, 4 hours 11 minutes before
ATTN SELS STORM REPORT NATIONAL WEATHER SERVICE MOBILE AL 700 PM CST WED MAR 12 1986 HARRISON COUNTY MISSISSIPPI CIVIL DEFENSE REPORTED TREES DOWN ABOUT 2 MILES NORTHWEST OF DOWNTOWN GULFPORT.m TIME ESTIMATED ABOUT 600 PM.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 8:38 PM CST | Severe Thunderstorm Warning | MOB | Clarke | 67 min |
| Mar 12, 10:30 PM CST | Severe Thunderstorm Warning | MOB | Lowndes | 45 min |
| Mar 12, 11:30 PM CST | Severe Thunderstorm Warning | MOB | Lowndes | 60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.