Alert archive / Alabama / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 86, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jul 31, 1986, 2:03 PM CDT for Limestone County, Madison County, Morgan County, Alabama. It was in force for 57 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
- Jul 31, 1986, 2:03 PM CDT (19:03 UTC)
- Expired
- Jul 31, 1986, 3:00 PM CDT
- In force
- 57 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Limestone County, AL, Madison County, AL, Morgan 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 |
|---|---|---|---|
| Jul 31, 2:40 PM CDT | Hail 1.5 | Limestone, 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
Nashville Metro, TN (KBNA), launched 12:00Z, 7.1 hours before the alert went out and 163 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
- 201 J/kg
- Mixed-layer CIN
- -437 J/kg
- Mixed-layer LCL
- 1888 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jul 31, 8:58 AM CDT, 5 hours 5 minutes before
STORM REPORT NATIONAL WEATHER SERVICE MONTGOMERY AL 855 AM CDT THU JUL 31 1986 ..ADDITIONAL STORM REPORTS FOR STORMS OF JULY 30 1986.. ..420 PM CDT..BARBOUR COUNTY..TREES AND POWERS LINES DOWNED IN% SOUTHWEST PART OF COUNTY JUST WEST OF LOUISVILLE. REPORT FROM PEA RIVER ELECTRIC CO-OP. PETTIT
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 7:10 PM CDT | Severe Thunderstorm Warning | BMX | Lamar | 50 min |
| Jul 30, 7:35 PM CDT | Severe Thunderstorm Warning | BMX | Pickens | 55 min |
| Jul 31, 1:08 PM CDT | Severe Thunderstorm Warning | BMX | Limestone | 67 min |
| Jul 31, 2:28 PM CDT | Severe Thunderstorm Warning | BMX | Marshall | 62 min |
| Jul 31, 3:00 PM CDT | Severe Thunderstorm Warning | BMX | Etowah | 60 min |
| Jul 31, 3:05 PM CDT | Severe Thunderstorm Warning | BMX | Lawrence | 40 min |
| Jul 31, 3:29 PM CDT | Severe Thunderstorm Warning | BMX | Marshall | 61 min |
| Jul 31, 3:45 PM CDT | Severe Thunderstorm Warning | BMX | Blount, St. Clair | 60 min |
| Jul 31, 4:50 PM CDT | Severe Thunderstorm Warning | BMX | Talladega | 40 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.