Alert archive / Alabama / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 99, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jul 1, 1989, 1:31 PM CDT for Clarke County, Washington County, Alabama. It was in force for 59 min. 2 reports 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 1, 1989, 1:31 PM CDT (18:31 UTC)
- Expired
- Jul 1, 1989, 2:30 PM CDT
- In force
- 59 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties Clarke County, AL, Washington 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 1, 1:35 PM CDT | Thunderstorm Wind 0 | Clarke, AL | |
| Jul 1, 1:40 PM CDT | Thunderstorm Wind 0 | Washington, 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 12:00Z, 6.5 hours before the alert went out and 169 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 69 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 KMOB 011832
SVRMOB
ALC025-129-011930-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
131 PM CDT SAT JUL 1 1989
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHWEST ALABAMA
...CLARKE...EASTERN WASHINGTON
AT 125 PM CDT THE MOBILE RADAR INDICATED A BAND OF SEVERE
THUNDERSTORMS ACROSS WASHINGTON COUNTY FROM NEAR CHATOM SOUTHEAST TO
THE SOUTHERN TIP OF CLARKE COUNTY. THE THUNDERSTORMS WERE MOVING
TOWARD THE NORTHEAST AT 15 MPH.
WIND DAMAGE IS LIKELY IN THESE THUNDERSTORMS.
WHEN THUNDERSTORMS ARE OCCURRING...PPEOPLE 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 1, 10:32 AM CDT, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 1025 AM CDT SAT JUL 1 1989 ...A SPECIAL MARINE WARNING IS IN EFFECT UNTIL 1045 AM CDT FOR THE PENSACOLA AREA BEACHES... SEVERAL REPORTS OF WATERSPOUTS WERE RECIEVED FROM THE PERDIDO KEY AREA OF NORTHWEST FLORIDA BETWEEN 930 AND 10 AM. AT 1025 AM CDT...THUNDERSTORMS WERE DEVELOPING FROM THE PENSACOLA AREA SOUTHEAST OVER THE GULF. A FEW WERE MOVING ONSHORE INTO KSOUTHEAST BALDWIN COUNTY OF ALABAMA. ISOLATED SHOWERS WERE DEVELOPING NORTH OF BILOXI MISSISSIPPI. MOVEMENTS WERE TOWARD THE NORTHEAST NEAR 10 MILES AN HOUR.
Nearby
Severe Thunderstorm Warnings in Alabama, 1989Every severe thunderstorm warning in 1989
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.