Alert archive / Alabama / Flash Flood Warnings in 1987
Flash Flood Warning 1, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Feb 15, 1987, 4:20 PM CST for Mobile County, Alabama. It was in force for 100 min.
The area
The counties it named.
The facts
- Issued
- Feb 15, 1987, 4:20 PM CST (22:20 UTC)
- Expired
- Feb 15, 1987, 6:00 PM CST
- In force
- 100 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Mobile 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
Boothville, LA (KBVE), launched 12:00Z, 10.3 hours before the alert went out and 190 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
- 497 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 467 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
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 flash flood 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 15, 1:30 PM CST, 2 hours 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 130 PM CST SUN FEB 15 1987 ...TORNADO WATCH NUMBER 10 IS IN EFFECT UNTIL 600 PM FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI... AT 125 PM CST MOBILE RADAR SHOWED A BROAD AREA OF RAIN WITH SCATTERED THUNDERSTORMS OVER SOUTHEAST MISSISSIPPI...EXTREME SOUTHWEST ALABAMA AND THE ADJACENT COASTAL WATERS. A LINE OF STRONG THUNDERSTORMS FROM JUST WEST OF HATTIESBURG EXTENDED INTO THE NEW ORLEANS AREA. THIS LINE IS MOVING TO THE EAST AT NEAR 25 MPH...AS INDIVIDUAL STORMS MOVE TO THE NORTHEAST RAPIDLY. PERSONS IN SOUTHEAST MISSISSIPPI SHOULD BE ALERT FOR POSSIBLE SEVERE WEATHER AND MOVE TO A SAFE PLACE IF THREATENING WEATH%ER IS SIGHTED. BOATERS AND MARINE INTRESTS IN THE MISSISSIPPI AND ALABAMA COASTAL WATERS SHOULD SEEK SAFE HARBOR UNTIL THUNDERSTORMS MOVE OUT OF THE AREA.
Special weather statement, Feb 15, 1:36 PM CST, 2 hours 44 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 135 PM CST SUN FEB 15 1987 AT 130 PM CST...A LARGE AREA OF RAIN MIXED WITH SCATTERED THUNDER- STORMS...SOME VERY HEAVY...WAS OVER SOUTHEAST LOUISIANA...SOUTHEAST MISSISSIPPI...SOUTHWEST ALABAMA...AND THE ADJOINING COASTAL WATERS... AND WAS MOVING INTO THE WEST PART OF THE FLORIDA PANHANDLE. THE HEAVIER THUNDERSTORMS WERE AROUND THE MOBILE AREA AND IN COASTAL MISSISSIPPI. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR. THE HEAVIER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN... FREQUENT LIGHTNING...GUSTY WINDS AROUND 40 MILES AN HOUR...FLOODING OF STREETS AND POOR DRAINAGE AREAS...AND' FOR MARINE INTERESTS THE ADDITIONAL ROUGH SEAS AND REDUCED VISIBILITY. PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS.
Special weather statement, Feb 15, 3:35 PM CST, 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 335 PM CST SUN FEB 15 1987 ...A SPECIAL MARINE WARNING IS IN EFFECT FOR THE MISSISSIPPI-ALABAMA COASTAL WATERS UNTIL 500 PM CST... ...TORNADO WATCH NUMBER 10 WAS CANCELED FOR SOUTHEAST MISSISSIPPI AT AT 330 PM CST... ...TORNADO WATCH NUMBER 11 IS IN EFFECT FOR ALL COUNTIES IN SOUTHWEST ALABAMA UNTIL 800 PM CST... AT 330 PM CST MOBILE RADAR SHOWED A BROAD AREA OF RAIN WITH SCATTERED THUNDERSTORMS OVER SOUTHWEST ALABAMA...THE WESTERN PART OF NORTHWEST FLORIDA...EXTREME SOUTHEAST MISSISSIPPI AND THE ADJACENT COASTAL WATERS. THE STRONGEST THUNDERSTORMS WERE LOCATED JUST WEST THROUGH NORTHWEST OF MOBILE...MOVING RAPIDLY TO THE NORTHEAST. IF THREATENING WEATHER APPROCHES...GO TO A SAFE PLACE IMMEDIATELY.
Special weather statement, Feb 15, 3:40 PM CST, 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 335 PM CST SUN FEB 15 1987 AT 330 PM CST...A TORNADO WATCH WAS IN EFFECT FOR ESCAMBIA...SANTA ROSA...OKALOOSA...WALTON...HOLMES...WASHINGTON...AND BAY COUNTIES IN THE FLORIDA PANHANDLE UNTIL 8 PM CST. NUMEROUS HEAVY THUNDERSTORMS WERE OVER EXTREME SOUTHEAST MISSISSIPPI... SOUTHWEST ALABAMA...AND THE COASTAL WATERS SOUTH OF THERE DOWN TO THE MOUTH OF THE MISSISSIPPI RIVER. ISOLATED THUNDERSTORMS WERE OCCURRING OVER THE EXTREME WESTERN TIP OF THE FLORIDA PANHANDLE NEAR PENSACOLA AND THE MILTON/CRESTVIEW AREAS. WIDESPREAD LIGHT RAIN ACCOMPANIED THE STORMS AND WAS OVER SOUTHEAST MISSISSIPPI...SOUTHWEST ALABAMA...THE WESTERN TIP OF THE FLORIDA PANHANDLE...AND THE COASTAL WATERS UP TO 100 MILES OFFSHORE. MOVEMENT OF THE RAINS AND STORMS WAS TO THE EAST AND NORTHEAST AT 30 TO 35 MPH.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 5:24 PM CST | Severe Thunderstorm Warning | MOB | Dallas | 66 min |
Nearby
Flash Flood Warnings in Alabama, 1987Every flash flood 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; the sounding from the Mesonet's radiosonde archive.