Alert archive / Alabama / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 4, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Feb 28, 1987, 9:55 AM CST for Mobile County, Washington County, Alabama. It was in force for 75 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
- Feb 28, 1987, 9:55 AM CST (15:55 UTC)
- Expired
- Feb 28, 1987, 11:10 AM CST
- In force
- 75 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties Mobile 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 |
|---|---|---|---|
| Feb 28, 9:57 AM CST | Thunderstorm Wind 0 | Mobile, 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
Boothville, LA (KBVE), launched 12:00Z, 3.9 hours before the alert went out and 223 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
- 1216 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 461 m²/s²
- 0-3 km storm-relative helicity
- 472 m²/s²
- Significant tornado parameter
- 3.7
- Supercell composite
- 18.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 281555 SVRMOB ALC097-129-281700- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 955 AM CST SAT FEB 28 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 AM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHWEST ALABAMA...NORTHERN MOBILE AND SOUTHERN WASHINGTON MOBILE RADAR AT 950 AM CST SHOWED A LINE OF VERY STRONG THUNDERSTORMS SOME 8 MILES =WIDE FROM LEAKSVILLE TO 10 MILES SOUTHEAST OF LUCEDALE. THE LINE WAS MOVING NORTHEAST AT 50 MPH. THIS STORM IS ACCOMPANIED BY INTENSE LIGHTNING AND STRONG GUSTY WINDS.
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, Feb 28, 6:31 AM CST, 3 hours 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 630 AM CST SAT FEB 28 1987 ...TORNADO WATCH NUMBER 22 IS IN EFFECT UNTIL 100 PM FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA FOR TODAY... WEATHER SERVICE RADARS AT 625 AM SHOWED A LINE OF DEVELOPING STRONG THUNDERSTORMS JUST EAST OF BATON ROUGE LOUISIANA SOUTHWARD TO THE COAST WEST OF HOUMA AND INTO THE GULF BEYOND 150 MILES. THE LINE WAS MOVING EAST AT 25 MPH WHILE INDIVIDUAL STORMS WERE MOVING NORTH AT 60 MPH. RESIDENTS OF SOUTHEAST MISSISSIPPI SHOULD BE ALERT FOR THE POSSIBILITY OF SEVERE WEATHER THIS MORNING INCLUDIJNG FLASH FLOODING INDUCED BY THE HEAVY RAINFALL ASSOCIATED WITH THE THUNDERSTORMS.
Special weather statement, Feb 28, 8:24 AM CST, 1 hour 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 830 AM CST SAT FEB 28 1987 ...TORNADO WATCH NUMBER 22 IS IN EFFECT UNTIL 100 PM FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA FOR TODAY... WEATHER SERVICE RADARS AT 830 AM SHOWED A 20 MILE MIDE LINE OF VERY HEAVY THUNDERSTORMS FROM NEAR BAY SPRINGS MISSISSIPPI TO SLIDELL LOUISIANNA THEN INTO THE GULF 150 MILES. THE LINE WAS MOVING EAST AT 25 MPH WHILE INDIVIDUAL STORMS ARE MOVING NORTH AT 60 MPH. RESIDENTS OF SOUTHEAST MISSISSIPPI SHOULD BE ALERT FOR THE POSSIBILITY OF SEVERE WEATHER THIS MORNING INCLUDING FLASH FLOODING INDUCED BY THE HEAVY RAINFALL ASSOCIATED WITH THE THUNDERSTORMS.
Special weather statement, Feb 28, 8:27 AM CST, 1 hour 28 minutes before
KMOB 281427 COR SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 830 AM CST SAT FEB 28 1987 ...TORNADO WATCH NUMBER 22 IS IN EFFECT UNTIL 100 PM FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA FOR TODAY... WEATHER SERVICE RADARS AT 830 AM SHOWED A 20 MILE WIDE LINE OF VERY HEAVY THUNDERSTORMS FROM NEAR BAY SPRINGS MISSISSIPPI TO SLIDELL LOUISIANNA THEN INTO THE GULF 150 MILES. THE LINE WAS MOVING EAST AT 25 MPH WHILE INDIVIDUAL STORMS ARE MOVING NORTH AT 60 MPH. RESIDENTS OF SOUTHEAST MISSISSIPPI SHOULD BE ALERT FOR THE POSSIBILITY OF SEVERE WEATHER THIS MORNING INCLUDING FLASH FLOODING INDUCED BY THE HEAVY RAINFALL ASSOCIATED WITH THE THUNDERSTORMS.
Special weather statement, Feb 28, 9:40 AM CST, 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 940 AM CST SAT FEB 28 1987 ...A TORNADO WATCH IS IN EFFECT FOR EXTREME SOUTHEAST MISSISSIPPI AND ALL OF SOUTHWEST ALABAMA... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA FOR TODAY... AT 930 AM CST THE NATIONAL WEATHER SERVICE RADAR AT MOBILE SHOWED A LINE OF VERY HEAVY THUNDERSTORMS FROM NEAR MERIDIAN MISSISSIPPI TO PASCAGOULA MISSISSIPPI THEN INTO THE GULF FORM 100 MILES. THE LINE WAS MOVING TO THE EAST AT 40 MPH. THESE STORMS ARE PRODUC
Special weather statement, Feb 28, 9:44 AM CST, 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 945 AM CST SAT FEB 28 1987 ...A TORNADO WATCH IS IN EFFECT FOR EXTREME SOUTHEAST MISSISSIPPI AND ALL OF SOUTHWEST ALABAMA... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA FOR TODAY... AT 930 AM CST THE NATIONAL WEATHER SERVICE RADAR AT MOBILE SHOWED A LINE OF VERY HEAVY THUNDERSTORMS FROM NEAR MERIDIAN MISSISSIPPI TO PASCAGOULA MISSISSIPPI THEN INTO THE GULF FORM 100 MILES. THE LINE WAS MOVING TO THE EAST AT 40 MPH. THESE STORMS ARE PRODUCING STRONG GUSTY WINDS...SEVERE LIGHTNING...AND BLINDING RAIN. THE LINE WILL MOVE INTO THE MOBILE DURING THE NEXT HOUR . RESIDENTS OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA SHOULD REMAIN ALERT FOR LATER STATEMENTS OR WARNINGS.
Special weather statement, Feb 28, 9:45 AM CST, 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 1040 AM CST SAT FEB 28 1987 AT 1030 AM CST...A LINE OF VERY HEAVY THUNDERSTORMS LAY ALONG THE EASTERN EDGE OF MISSISSIPPI AND SOUTHWARD OVER THE CHANDELEUR ISL. OFF THE LOUISIANNA COAST. THIS LINE CONSISTED OF POTENTIALLY SEVERE THUNDERSTORMS AND WAS MOVING RAPIDLY EAST. AT THE PRESENT SPEED... THIS LINE OF STORMS WILL BE NEAR PENSACOLA AND THE WESTERN END OF THE FLORIDA PANHANDLE AROUND NOON. THE PUBLIC SHOULD WATCH FOR WORSENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS OR WARNINGS. SCATTERED SHOWERS WERE OVER THE WESTER PANHANDLE AT THIS TIME. SHOWER AND THUNDERSTORM MOVEMENT WAS TO THE NORTHEAST% AT 55 TO 60 MILES AN HOUR.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 10:30 AM CST | Severe Thunderstorm Warning | MOB | Baldwin | 60 min |
| Feb 28, 12:26 PM CST | Severe Thunderstorm Warning | MOB | Dallas | 64 min |
| Feb 28, 1:16 PM CST | Severe Thunderstorm Warning | MOB | Autauga, Montgomery | 59 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1987Every severe thunderstorm warning in 1987
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.