Alert archive / Alabama / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 85, NWS Mobile, AL

June 15, 1989Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 15, 1989, 7:35 AM CDT for Baldwin County, Alabama. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Jun 15, 1989, 7:35 AM CDT (12:35 UTC)
Expired
Jun 15, 1989, 8:30 AM CDT
In force
55 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Baldwin 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.6 hours before the alert went out and 192 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 1989-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1427 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 1989-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1427 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
588 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMOB 151240
SVRMOB
ALC003-151230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOBILE AL
735 AM CDT THU JUN 15 1989

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL  830 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...

IN SOUTHWEST ALABAMA
          ...SOUTH CENTRAL BALDWIN

AND ADJOINING THE WATERS OF MOBILE BAY.


AT 732 AM CDT MOBILE AND PENSACOLA RADARS INDICATED A SEVERE
THUNDERSTORM OVER THE SOUTH END OF MOBILE BAY MOVING TO THE NORTHEAST
AT 30 MPH. THE STORM WILL COME ASHORE NEAR POINT CLEAR AND MOVE TO THE
LOXLEY...ROBEWRTSDALE AREA DURING THE NEXT HOUR.

MARINE INTEREST ON MOBILE BAY SHOULD SEEK SAFE HARBOR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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, Jun 15, 5:41 AM CDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
540 AM CDT THU JUN 15 1989

AT 530 AM CDT...SHORT LINES AND CLUSTERS OF SHOWERS AND THUNDERSTORMS
WERE NUMEROUS OVER THE WEST END OF THE PANHANDLE...SOUTHERN AND
SOUTHWEST ALABAMA...AND THE ALABAMA COASTAL WATERS. RAIN AND SHOWERS
SPREAD WESTWARD INTO MISSISSIPPI.

LARGE THUNDERSTORMS WERE MOVING FROM THE GULF INLAND FROM PENSACOLA TO
MOBILE BAY. THESE STORMS WERE DUMPING VERY HEAVY RAIN AS THEY MOVED
NORTHEAST 30 TO 35 MILES AN HOUR.

STREET AND LOW AREA FLOODING WILL LIKELY OCCUR AN THE LARGER STORMS
MOVE ACROSS PENSACOLA AND MILTON.

MOTORISTS SHOULD NOT TRY TO CROSS FLOODED STREETS WHEN THE WATER
DEPTH IS: IN DOUBT. USE AN ALTERNATE ROUTE.
Special weather statement, Jun 15, 5:45 AM CDT, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
555 AM CDT THU JUN 15 1989

 ...STRONG THUNDERSTORMS AND LOCALLY HEAVY RAINFALL POSSIBLE FOR
SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI THIS MORNING...

AT 540 AM...THE MOBILE RADAR SHOWED SEVERAL NORTHEAST-SOUTHWEST LINES
OF THUNDERSTORMS ACROSS SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI
EXTENDING OFFSHORE INTO THE GULF BEYOND 100 MILES.  THEY WERE MOVING
LITTLE WITH THE INDIVIDUAL THUNDERSTORMS MOVING TOWARD THE NORTHEAST
AT 30 MPH.  STRONGEST STORMS WERE OVER CENTRAL AND NORTHERN BALDWIN
COUNTY ALABAMA WHERE WINDS STRONG ENOUGH TO BLOW GARBAGE CANS AND
OTHER OBJECTS AROUND OCCURRED AT 450C AM.
Special weather statement, Jun 15, 6:12 AM CDT, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
610 AM CDT THU JUN 15 1989

 ...A SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT FOR ALL OF
SOUTHWEST ALABAMA AND THE ALABAMA COASTAL WATERS UNTIL NOON...

AT 600 AM...THE MOBILE RADAR SHOWED SEVERAL NORTHEAST-SOUTHWEST LINES
OF THUNDERSTORMS ACROSS SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI
EXTENDING OFFSHORE INTO THE GULF BEYOND 100 MILES.  THEY WERE MOVING
LITTLE WITH THE INDIVIDUAL THUNDERSTORMS MOVING TOWARD THE NORTHEAST
AT 30 MPH.  STRONGEST STORMS WERE OVER THE CENTRAL PORTION OF MOBILE
BAY.

WINDS STRONG ENOUGH TO BLOW GARBAGE CANS AND OTHER OBJECTS AROUND WERE
REPORTED IN LOXLEY ALABAMA IN BALDWIN COUNTY AT 450 AM.

MARINE INTERESTS SHOULD CONSIDER REMAINING IN PORT.  NUMEROUS
THUNDERSTORMS WITH STRONG GUSTY WINDS...ROUGH SEAS...DANGEROUS LIGHTNING
...POSSIBLE HAIL AND WATERSPOUTS ARE LIKELY THROUGHOUT THE MORNING.

IN ADDITION TO THE POSSIBLY SEVERE WEATHER...RAINFALL AMOUNTS OF
TWO OR MORE INCHES ARE POSSIBLE BEFORE NOON.  WITH THE GROUND ALREADY
SATURATED...SMALL STREAMS WILL RISE RAPIDLY AND ROADS AND STREETS
WILL FLOOD.  MOTORISTS SHOULD EXERCISE CAUTION AND WATCH rFOR FLOODED
AREAS ON THE HIGHWAY.

RESIDENTS OF SOUTHWEST ALABAMA SHOULD REMAIN ALERT TO THE POSSIBLITY
OF SEVERE WEATHER TODAY.
Special weather statement, Jun 15, 6:39 AM CDT, 56 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
640 AM CDT THU JUN 15 1989

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 12 NOON THIS THURSDAY
FOR ESCAMBIA...SANTA ROSA...OKALOOSA...WALTON...WASHINGTON...JACKSON
AND HOLMES COUNTIES OF NORTHWEST AND THE ADJACENT COASTAL WATERS.

AT 630 AM CDT...NUMEROUS STRONG THUNDERSTORMS WERE MOVING NORTHEAST
THROUGH BALDWIN COUNTY OF ALABAMA AND ESCAMBIA AND SANTA ROSA COUNTIES
OF FLORIDA AT ABOUT 35 MILES AN HOUR.

VERY HEAVY RAINS ARE OCCURRING WITH THE LARGER THUNDERSTORMS. STREET
AND LOW AREA FLOODING WILL OCCUR AS THE STORMS PASS OVER METROPOLITAN
AREAS. MOTORISTS ARE URGED TO AVOID AREAS OF STANDING WATER.
Local storm report, Jun 15, 7:16 AM CDT, 19 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
715 AM CDT THU JUN 15 1989

...LOXLEY ALABAMA PD REPORTED TREE LIMBS UP TO THREE INCHES IN
DIAMETER BLOWN DOWN AT 450 AM....
Special weather statement, Jun 15, 7:32 AM CDT, 3 minutes before
SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
730 AM CDT THU JUN 15 1989

 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF
SOUTHWEST ALABAMA AND THE ALABAMA COASTAL WATERS UNTIL NOON...

AT 725 AM...THE MOBILE RADAR SHOWED A BAND OF STRONG THUNDERSTORMS
LOCATED NORTHEAST TO SOUTHWEST ACROSS BALDWIN AND THE SOUTHERN PORTION
OF MOBILE COUNTY.  THE THUNDERSTORMS WERE MOVING NORTHEAST ALONG THE
BAND AT 30 MPH WITH THE BAND NOT MOVING MUCH.  THUNDERSTORMS WITH HEAVY
RAINFALL ARE EXPECTED TO REPEATEDLY MOVE ACROSS AREAS THAT ARE
SATURATED.  LOXLEY PD ESTIMATED AT 700 AT LEAST TWO INCHES OF RAIN
SINCE MIDNIGHT.  ONE ROAD IN LOXLEY IS ALREADY COVERED WITH WATER.

ADDITIONAL HEAVY RAINFALL MAY PROMPT FLASH FLOOD WARNINGS THIS MORNING.
MOTORISTS SHOULD EXERCISE EXTREME CAUTION WHILE DRIVING.

RESIDENTS OF SOUTHWEST ALABAMA SHOULD BE ALERT FOR THE POSSIBILITY OF
SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL THIS MORNING.

MARINE INTERESTS ARE ADVISED TO AVOID THE COASTAL WATERS THIS
MORNING. STRONG THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS...
ROUGH SEAS...DANGEROUS LIGHTNING AND POSSIBLE WATERSPOUTS.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 4:36 AM CDTSevere Thunderstorm WarningMOBBaldwin39 min
Jun 15, 11:05 AM CDTSevere Thunderstorm WarningMOBBarbour40 min
Jun 15, 5:45 PM CDTSevere Thunderstorm WarningMOBHouston45 min
Jun 15, 6:35 PM CDTSevere Thunderstorm WarningMOBBaldwin55 min

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; the sounding from the Mesonet's radiosonde archive.