Alert archive / Alabama / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 89, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jul 14, 1991, 6:30 PM CDT for Houston County, Alabama. It was in force for 45 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 14, 1991, 6:30 PM CDT (23:30 UTC)
- Expired
- Jul 14, 1991, 7:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Houston County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 14, 7:00 PM CDT | Thunderstorm Wind 0 | Houston, 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.5 hours before the alert went out and 127 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
- 110 J/kg
- Mixed-layer CIN
- -185 J/kg
- Mixed-layer LCL
- 1643 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 37 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 KMGM 142330 SVRMGM ALC069-150015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MONTGOMERY AL 630 PM CDT SUN JUL 14 1991 THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH ALABAMA ...SOUTHERN HOUSTON COUNTY WEATHER RADAR AT MONTGOMERY SHOWED A SEVERE THUNDERSTORM JUST NORTH OF THE FLORIDA BORDER SOUTH OF ASHFORD. THESE THUNDERSTORMS HAVE HAD A HISTORY OF DAMAGE. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
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, Jul 14, 2:07 PM CDT, 4 hours 23 minutes before
FLZ001-002-003-004-142000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PENSACOLA FL 200 PM CDT SUN JUL 14 1991 STRONG THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER THE FLORIDA PANHANDLE ...MAINLY ALONG THE COASTAL AREAS. THE THUNDERSTORMS WERE DEVELOPING AND INDICATING LITTLE MOVEMENT...AND DUE TO THE SLOW MOVEMENT OF THE THUNDERSTORMS SOME FLOODING OF STREETS AND OTHER POOR DRAINAGE AREAS MAY BE EXPECTED. THE STRONGER THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF VERY HEAVY RAIN...GUSTY WINDS AROUND 40 MILES AN HOUR...FREQUENT LIGHTNING AND POSSIBLE SMALL HAIL. PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS WHILE THE THUNDERSTORMS CONTINUE IN THE AREA.
Special weather statement, Jul 14, 4:41 PM CDT, 1 hour 49 minutes before
ALZ013-015-016-MSZ014-013-142300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 440 PM CDT SUN JUL 14 1991 ...SCATTERED STRONG THUNDERSTORMS OVER SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA... AT 435 PM MOBILE RADAR INDICATED SCATTERED STRONG THUNDERSTORMS FROM SOUTH OF MONTGOMERY ACROSS CLARK COUNTY TO NEAR LAUREL MISSISSIPPI. THE STRONGEST STORMS WERE JUST SOUTHEAST OF JACKSON ALABAMA. MOVEMENT HAS BEEN SLOWLY SOUTHEAST. HEAVY RAIN...GUSTY WINDS...FREQUENT LIGHTNING AND POSSIBLY SOME HAIL CAN BE EXPECTED WITH THE STRONGER STORMS. OTHER THUNDERSTORMS WERE IN THE FLORIDA PANHANDLE EAST OF PENSACOLA AND AROUND NEW ORLEANS.
Special weather statement, Jul 14, 6:00 PM CDT, 30 minutes before
ALZ013-015-016-MSZ014-013-150015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 600 PM CDT SUN JUL 14 1991 ...STRONG THUNDERSTORMS DEVELOPING ACROSS MOBILE COUNTY... AT 555 PM MOBILE RADAR INDICATED STRONG THUNDERSTORMS FROM JUST NORTH OF DOWNTOWN MOBILE TO NORTH OF SPANISH FORT. MOVEMENT WAS SOUTHEAST AT 15 MPH. OTHER SHOWERS AND THUNDWRSTORMS WERE WIDELY SCATTERED BETWEEN LAUREL MISSISSIPPI AND BREWTON ALABAMA. MOVEMENT WAS A LSO SOUTHEAST AT 15 MPH. THE STRONGER STORMS ARE CAPABLE OF PRODUCING VERY GUSTY WINDS...HEAVY RAIN AND FREQUENT LIGHTNING. WHEN A THUNDERSTORM IS NEARBY...STAY AWAY FROM WINDOWS AND ELECTRIAL APPLIANCES. UNTIL THE STORM PASSES.
Nearby
Severe Thunderstorm Warnings in Alabama, 1991Every severe thunderstorm warning in 1991
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.