Alert archive / Mississippi / Flash Flood Warnings in 1987
Flash Flood Warning 11, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Aug 14, 1987, 8:15 AM CDT for Jackson County, Mississippi. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 14, 1987, 8:15 AM CDT (13:15 UTC)
- Expired
- Aug 14, 1987, 11:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Jackson County, MS
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, 1.3 hours before the alert went out and 147 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 141318 FFWMOB MSC059-141600- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOBILE AL 815 AM CDT FRI AUG 14 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1100 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHEAST MISSISSIPPI...JACKSON AT 815 AM THE NATIONAL WEATHER SERVICE RADAR AT MOBILE SHOWED THAT VERY INTENSE RAINFALL HAS CONTINUED OVER PORTIONS OF JACKSON COUNTY. AMOUNTS OF 6 INCHES HAVE LIKELY FALLEN OVER THE CENTRAL PORTION OF THIS COUNTY AND IS CONTINUING. RESIDENTS OF JACKSON COUNTY MISSISSIPPI SHOULD TAKE IMMEDIATE STEPS TO INSURE SAFETY. IF THE WATER IS RISING WHERE YOU LIVE, MOVE NOW TO HIGHER GROUND. DO NOT...DO NOT DRIVE ACROSS RUNNING WATER UNLESS ABSOLUTELY NECESSARY. 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, 2:44 AM CDT, 5 hours 31 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 235 AM CDT FRI AUG 14 1987 ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE WEST FLORIDA PANHANDLE FOR TONIGHT... STRONG THUNDERSTORMS WERE ALONG THE COAST OF THE WEST FLORIDA PAN- HANDLE. AT 230 AM CDT...STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER THE COASTAL SECTIONS OF THE FLORIDA PANHANDLE AND COASTAL ALABAMA FROM FORT MORGAN ACROSS THE PENSACOLA NAVAL AIR STATION TO NEAR FORT WALTON. THE STRONGER THUNDERSTORMS WERE AROUND THE PENSACOLA NAVAL AIR STATION AND OVER THE IMMEDIATE COASTLINE AND COASTAL WATERS FROM PERDIDO BAY TO NAVARRE. OTHER THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...AND PATCHES OF RAIN WERE SCATTERED OVER THE FLORIDA PANHANDLE...SOUTHWEST ALABAMA...AND THE ADJOINING COASTAL WATERS. THE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR. THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN AND SOME FLOODING OFQ STREETS AND LOW AREAS WHICH ARE ALREADY SOAKED.
Special weather statement, Aug 14, 3:37 AM CDT, 4 hours 38 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 10 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, 2 hours 28 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, 1 hour 23 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 14, 10:55 AM CDT | Flash Flood Warning | MOB | Jackson | 3 hr |
| Aug 14, 1:07 PM CDT | Flash Flood Warning | MOB | Harrison, Stone | 4 hr |
| Aug 14, 2:20 PM CDT | Flash Flood Warning | MOB | Jackson | 3 hr |
| Aug 14, 5:00 PM CDT | Flash Flood Warning | MOB | Harrison, Jackson | 3 hr |
Nearby
Flash Flood Warnings in Mississippi, 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.