Alert archive / Alabama / Areal Flood Warnings in 2011
Areal Flood Warning 6, NWS Mobile, AL
NWS Mobile, AL issued this areal flood warning at Sep 28, 2011, 3:16 PM CDT for Mobile County, Alabama. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 28, 2011, 3:16 PM CDT (20:16 UTC)
- Expired
- Sep 28, 2011, 5:30 PM CDT
- In force
- 2 hr
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Mobile County, AL
The radar
The Mobile radar (KMOB), 4 km from the middle of the area, began a volume at 20:18 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.3 hours before the alert went out and 152 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
- 3518 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.5
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Mobile, AL wrote its last area forecast discussion before this areal flood warning went out at Sep 28, 3:16 PM CDT, 0 minutes earlier.
Area forecast discussion, Sep 28, 3:16 PM CDT, 0 minutes before
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</html>Hazardous weather outlook, Sep 28, 10:47 AM CDT, 4 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED... NATIONAL WEATHER SERVICE MOBILE AL 1047 AM CDT WED SEP 28 2011 ALZ051>064-FLZ001>006-GMZ630-650-655-670-675-MSZ067-075-076-078- 079-291200- CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE- LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA- COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-MOBILE BAY- COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM- COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20 NM- WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20 TO 60 NM- WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60 NM-WAYNE-PERRY- GREENE-STONE-GEORGE- 1047 AM CDT WED SEP 28 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF INTERIOR SOUTHEAST MISSISSIPPI...SOUTHWEST AND SOUTH CENTRAL ALABAMA...THE WESTERN FLORIDA PANHANDLE AND THE ADJACENT GULF COASTAL WATERS OF ALABAMA AND NORTHWEST FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED TO NUMEROUS THUNDERSTORMS EAST OF I-65 WILL EXIT THE AREA THIS AFTERNOON. ADDITIONAL THUNDERSTORM DEVELOPMENT WILL CONTINUE THROUGH EARLY AFTERNOON ESPECIALLY FROM ABOUT 15 MILES SOUTH OF HIGHWAY 84 AND POINTS FURTHER NORTH. BY LATE AFTERNOON AND EARLY EVENING...YET ANOTHER ROUND OF THUNDERSTORM DEVELOPMENT WILL OCCUR OVER SOUTHEASTERN MISSISSIPPI AS A SLOW MOVING UPPER LEVEL IMPULSE APPROACHES FROM THE WEST. THE PRIMARY THREAT ASSOCIATED WITH THIS AFTERNOON'S STORMS WILL BE STRAIGHT LINE WINDS AS HIGH AS 65 MPH...FREQUENT CLOUD TO GROUND LIGHTNING AND POSSIBLE SMALL HAIL WITH SOME LOCATIONS RECEIVING HAIL UP TO ONE INCH IN DIAMETER. HEAVY RAINFALL IS ALSO POSSIBLE. THE MAIN HEAVY RAINFALL THREAT WILL COME FIRST FROM INDIVIDUAL THUNDERSTORMS THAT ARE CAPABLE OF PRODUCING RAINFALL RATES UP TO THREE INCHES PER HOUR. A SECONDARY THREAT FOR ANY LOCATION COULD OCCUR IF SEVERAL OF THESE STORMS MOVE OVER THE SAME LOCATION REPEATEDLY. IN ALL...SOME LOCATIONS MAY RECEIVE UP TO SIX INCHES OF RAINFALL THIS AFTERNOON ON A VERY ISOLATED BASIS...WITH MOST LOCALES RECEIVING UNDER TWO INCHES. OVER THE MARINE AREA...GUSTY THUNDERSTORM WINDS IN EXCESS OF 33 KNOTS AND POSSIBLY SOME WATERSPOUTS WILL SERVE AS THE MAIN THREAT AS STORMS MOVE IN FROM THE WEST...SOMETIMES IN LINES LATER THIS AFTERNOON AND EARLY EVENING. THUNDERSTORMS AND HEAVY RAINFALL MAY ENDURE INTO THE MID EVENING HOURS WHICH IS A LITTLE LONGER THAN USUAL GIVEN THE APPROACH OF A THE AFOREMENTIONED MID LEVEL IMPULSE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A MODERATE TO STRONG COLD FRONT WILL MOVE ACROSS THE MARINE AREA FRIDAY NIGHT...GIVING WAY TO HAZARDOUS SEAS FOR SMALL CRAFT SATURDAY THROUGH EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS WILL NOT BE REQUIRED THROUGH THE PERIOD.
In the hours before
Special weather statement, Sep 28, 11:04 AM CDT, 4 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 1104 AM CDT WED SEP 28 2011 ALZ053-055-056-059>062-FLZ001-003-005-281700- CONECUH AL-COVINGTON AL-ESCAMBIA AL-MONROE AL-INLAND OKALOOSA FL- INLAND SANTA ROSA FL-INLAND ESCAMBIA FL-UPPER BALDWIN AL-CLARKE AL- UPPER MOBILE AL- 1104 AM CDT WED SEP 28 2011 ...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CONECUH...COVINGTON... ESCAMBIA...SOUTHERN MONROE...SOUTHEASTERN CLARKE...NORTHWESTERN BALDWIN AND NORTHEASTERN MOBILE COUNTIES IN SOUTHWEST ALABAMA... NORTHWESTERN OKALOOSA...NORTHERN SANTA ROSA AND NORTHERN ESCAMBIA COUNTIES IN NORTHWEST FLORIDA...THROUGH NOON CDT... AT 1059 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM MONROEVILLE TO 10 MILES NORTH OF ATMORE TO 6 MILES NORTHWEST OF SATSUMA...AND MOVING EAST AT 50PH. * LOCATIONS IMPACTED INCLUDE... WHITFIELD... MOUNT CARMEL... FIDELIS... DIXONVILLE... COBBTOWN... MOVICO... POARCH CREEK RESERVATION... ROCKVILLE... HORN HILL... THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 26 AND 100. THE PRIMARY THREATS FROM THESE STORMS ARE WIND GUSTS UP TO 50 MPH. WINDS THIS STRONG COULD BLOW OFF TREE LIMBS AND ALSO BLOW AROUND SMALL UNSECURED OBJECTS. SEEK SHELTER UNTIL THESE STORMS HAVE PASSED. SMALL HAIL IS ALSO POSSIBLE WITH THESE STORMS. &&
Local storm report, Sep 28, 12:30 PM CDT, 2 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1230 PM CDT WED SEP 28 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1155 AM NON-TSTM WND DMG TENSAW 31.16N 87.80W
09/28/2011 BALDWIN AL EMERGENCY MNGR
TREES DOWN, 1 ACROSS HIGHWAY 59 SOUTH BOUND NEAR TENSAW.
APPARENT OUTFLOW FROM DECAYING THUNDERSTORMS
&&
DONFSpecial weather statement, Sep 28, 2:41 PM CDT, 35 minutes before
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</html>The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 7:27 AM CDT | Severe Thunderstorm Warning | MOB | Covington, Crenshaw | 48 min |
| Sep 28, 8:28 AM CDT | Special Marine Warning | MOB | 62 min | |
| Sep 28, 9:03 AM CDT | Areal Flood Advisory | MOB | Butler, Conecuh, Covington, Monroe, Wilcox | 3 hr |
| Sep 28, 9:20 AM CDT | Special Marine Warning | MOB | 115 min | |
| Sep 28, 9:29 AM CDT | Special Marine Warning | MOB | 31 min | |
| Sep 28, 11:13 AM CDT | Special Marine Warning | MOB | 47 min | |
| Sep 28, 1:35 PM CDT | Special Marine Warning | MOB | 115 min | |
| Sep 28, 1:48 PM CDT | Severe Thunderstorm Warning | MOB | Mobile | 35 min |
| Sep 28, 1:56 PM CDT | Areal Flood Advisory | MOB | Baldwin, Mobile | 3 hr |
| Sep 28, 2:43 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin | 25 min |
| Sep 28, 2:49 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 41 min |
| Sep 28, 3:26 PM CDT | Special Marine Warning | MOB | 64 min | |
| Sep 28, 3:34 PM CDT | Areal Flood Advisory | MOB | Baldwin, Mobile, Washington | 3 hr |
| Sep 28, 4:16 PM CDT | Special Marine Warning | MOB | 59 min | |
| Sep 28, 1:22 PM CDT | Severe Thunderstorm Warning | MOB | Stone | 53 min |
Nearby
Areal Flood Warnings in Alabama, 2011Every areal flood warning in 2011
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; radar from the NEXRAD Level II archive.