Alert archive / Alabama / Flash Flood Warnings in 1987
Flash Flood Warning 12, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Aug 14, 1987, 9:00 AM CDT for Mobile County, Alabama. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 14, 1987, 9:00 AM CDT (14:00 UTC)
- Expired
- Aug 14, 1987, 12:00 PM CDT
- In force
- 3 hr
- 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, 2.0 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
- 2780 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- -18 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 141359 FFWMOB ALC097-141700- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOBILE AL 900 AM CDT FRI AUG 14 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1200 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHWEST ALABAMA...EXTREME SOUTHERN MOBILE AT 856 AM CDT RADAR CONTINUED TO SHOW A BAND OF THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL FROM NEAR HATTIESBURG TO PASCAGOULA AND ACROSS EXTREME SOUTHWEST MOBILE COUNTY AND DAUPHIN ISLAND. OVER 14 INCHES OF RAIN HAS FALLEN ON DAUPHIN ISLAND DURING THE LAST 48 HOURS...AND ADDITIONAL HEAVY RAINS DURING THE NEXT FEW HOURS WILL PUT MANY ROADWAYS AND LOW LYING AREAS UNDER WATER. MOST FLASH FLOOD FATALITIES OCCUR WHEN PEOPLE DRIVE OR WALK INTO FLOOD WATERS OF UNKNOWN DEPTH...DONT BECOME A VICTIM OF THIS UNUSUAL WEATHER. FLOODING OF STREETS AND ROADS WAS REPORTED IN THE COUNTY BY THE SHERIFFS OFFICE JUST A FEW MINUTES AGO. THIS IS A DANGEROUS SITUATION. RESIDENTS SHOULD TAKE ACTION NOW.
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, Aug 14, 3:37 AM CDT, 5 hours 23 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 335 AM CDT FRI AUG 14 1987 ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST FLORIDA TONIGHT... STRONG THUNDERSTORMS WERE ALONG THE COAST OF THE WEST FLORIDA PAN- HANDLE. AT 330 AM CDT...STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER THE COASTAL SECTIONS AND COASTAL WATERS FROM THE EAST SHORE OF MOBILE BAY ACROSS THE PENSACOLA NAVAL AIR STATION TO WEST OF FORT WALTON. THE STRONGER THUNDERSTORMS WERE FROM FOLEY AND GULF SHORES ALABAMA TO AROUND THE PENSACOLA NAVAL AIR STATION AND THE IMMEDIATE COASTAL WATER. OTHER THUNDERSTORMS...SOME WITH HEAVY RAIN...WERE SCATTERED ALONG THE COASTAL SECTIONS AND WATERS FROM PASCAGOULA TO APALACHICOLA. THE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN CAUSING FLOODING OF STREETS AND LOW AREAS. PERSONS SHOULD BE ALERT FOR RAPID RISING WATEQRS WHILE THE STORMS CONTINUE TO DEVELOP AND MOVE THROUGH THE AREA.
Special weather statement, Aug 14, 5:05 AM CDT, 3 hours 55 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 435 AM CDT FRI AUG 14 1987 ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST FLORIDA TODAY... STRONG THUNDERSTORMS WERE ALONG THE COAST OF THE WEST FLORIDA PAN- HANDLE. AT 430 AM CDT...STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER THE COASTAL SECTIONS AND COASTAL WATERS FROM AROUND GULF SHORES ALABAMA ACROSS THE PENSACOLA NAVAL AIR STATION TO NEAR NAVARRE...AND INTO THE COASTAL WATERS 30 MILES. THE STRONGER THUNDERSTORMS WERE FROM AROUND PERDIDO BAY TO GULF BREEZE AND JUST OFFSHORE SOUTHWEST THROUGH SOUTHEAST OF THE NAVAL AIR STATION. OTHER THUNDERSTORMS...SOME WITH HEAVY RAIN...WERE SCATTERED ALONG THE COASTAL SECTIONS AND WATERS FROM BAYOU LA BATRE TO PANAMA CITY. THE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN CAUSING FLOODING OF STREETS AND LOW AREAS...ESPECIALLY ALONG THE COAST HIGHWAYS OF ESCAMBIA AND SANTA ROSA.
Special weather statement, Aug 14, 5:47 AM CDT, 3 hours 13 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 535 AM CDT FRI AUG 14 1987 ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST FLORIDA TODAY... STRONG THUNDERSTORMS WERE ALONG THE COAST OF THE WEST FLORIDA PAN- HANDLE. AT 530 AM CDT...STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER THE COASTAL SECTIONS AND COASTAL WATERS FROM PASCAGOULA TO FREEPORT IN WALTON COUNTY. THE STRONGER THUNDERSTORMS WERE ALONG THE COASTLINE AND COASTAL WATERS TO 30 MILES OFFSHORE FROM FORT MORGAN ALABAMA TO 25 MILES EAST OF THE PENSACOLA NAVAL AIR STATION. THE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR...AND SOME OF THE HEAVIEST STORMS HAD MOVED FROM THE SHORE INTO THE COASTAL WATERS DURING THE PAST HOUR. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN CAUSING FLOODING OF STREETS AND LOW AREAS...ESPECIALLY ALONG THE COASTAL HIGHWAYS AND COASTAL AREAS OF ESCAMBIA AND SANTA ROSA.
Special weather statement, Aug 14, 6:52 AM CDT, 2 hours 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 635 AM CDT FRI AUG 14 1987 AT 630 AM CDT...A LARGE CLUSTER OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WAS JUST OFFSHORE FROM GULF SHORES ALABAMA TO JUST EAST OF THE PENSACOLA NAVAL AIR STATION. THE STRONGEST THUNDERSTORM WAS CENTERED 15 MILES SOUTHWEST OF THE PENSACOLA NAVAL AIR STATION. THE THUNDERSTORMS WERE MOVING EAST AT 15 MILES AN HOUR. OTHER THUNDERSTORMS...SOME WITH HEAVY RAIN...WERE MIXED WITH LARGE PATCHES OF RAIN ALONG THE COAST AND INTO THE GULF TO 75 MILES FROM AROUND PASCAGOULA MISSISSIPPI TO PANAMA CITY FLORIDA. THE THUNDERSTORMS OVER MISSISSIPPI AND ALABAMA WERE MOVING SLOWLY EAST- SOUTHEAST...WITH THE THUNDERSTORMS BETWEEN DESTIN AND PANAMA CITY MOVING SLOWLY NORTHEAST. THE THUNDERSTORMS WILL BE MOVING ONSHORE FROM FORT WALTON TO NEAR APALACHICOLA DURING THE NEXT FEW HOURS. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HE3AVY RAIN CAUSING FLOODING OF LOW AREAS...ESPECIALLY ALONG THE COASTAL SECTIONS.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 7:25 PM CDT | Flash Flood Warning | MOB | Conecuh, Escambia | 95 min |
| Aug 13, 8:55 PM CDT | Flash Flood Warning | MOB | Conecuh, Escambia | 65 min |
| Aug 14, 4:03 AM CDT | Flash Flood Warning | MOB | Baldwin | 3 hr |
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.