Alert archive / Alabama / Areal Flood Warnings in 2015

Areal Flood Warning 4, NWS Mobile, AL

April 14, 2015Mobile County, Alabama

NWS Mobile, AL issued this areal flood warning at Apr 14, 2015, 1:23 PM CDT for Mobile County, Alabama. It was in force for 3 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: Apr 14, 2015, 1:23 PM CDT (18:23 UTC)
Expired: Apr 14, 2015, 4:15 PM CDT
In force: 3 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 18:23 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, 6.4 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3222 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 452 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.1

Open this sounding in Storm Lab

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 Apr 14, 1:00 PM CDT, 23 minutes earlier.

Area forecast discussion, Apr 14, 1:00 PM CDT, 23 minutes before

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Hazardous weather outlook, Apr 14, 11:37 AM CDT, 1 hour 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOBILE AL
1137 AM CDT TUE APR 14 2015

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-151645-
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-WAYNE-PERRY-
GREENE-STONE-GEORGE-
1137 AM CDT TUE APR 14 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ALABAMA...SOUTHWEST ALABAMA...NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

.DAY ONE...THIS AFTERNOON AND TONIGHT
A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THE PERIOD. SEVERAL
ROUNDS OF SHOWERS WITH EMBEDDED THUNDERSTORM PERSIST THROUGH THE
OVERNIGHT HOURS. A GENERAL 1 TO 2 INCHES OVER MOST AREAS CAN BE
EXPECTED...HOWEVER...ISOLATED TOTALS MAY EASILY EXCEED SIX INCHES IN
THREE HOURS ON A VERY ISOLATED BASIS.  THE GREATEST COVERAGE AND
HIGHEST RAINFALL TOTALS WILL BE CLOSER TO THE COAST AND WEST OF I-65
TODAY AND WILL THEN SHIFT EASTWARD THIS AFTERNOON AND EVENING. LOCAL
CREEK FLOODING...AS WELL AS WATER FLOWING OVER ROADWAYS WILL DEVELOP
IN AREAS THAT RECEIVE THE HIGHEST RAIN.

A MODERATE RISK FOR DANGEROUS RIP CURRENTS WILL CONTINUE ALONG THE
GULF BEACHES OF ALABAMA AND NORTHWEST FLORIDA THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
A POTENTIALLY DANGEROUS FLOOD AND FLASH FLOOD PATTERN PERSISTS
THROUGH LATE SUNDAY WITH LINGERING EFFECTS INTO EARLY NEXT WEEK AS NO
LESS THAN 5 TO 10 ADDITIONAL ROUNDS OF SHOWERS AND THUNDERSTORMS ARE
FORECAST TO MOVE FROM WEST TO EAST ACROSS THE LOCAL AREA. AT THIS
TIME...CONFIDENCE IN FLOODING IS HIGHEST CLOSER TO THE COAST AND
WEST OF THE I-65 CORRIDOR (TO ALSO INCLUDE BALDWIN COUNTY
ALABAMA)...BUT THIS BY NO MEANS EXCLUDES ANY PART OF THE LOCAL
AREA...ESPECIALLY THE NW FLORIDA PANHANDLE. AT THIS POINT...IT IS
IMPOSSIBLE TO DETERMINE WHERE EACH UPCOMING ROUND OF HEAVY RAINFALL
WILL SET UP...BUT THE ENTIRE REGION SHOULD BE ON ALERT FOR A
CONTINUED VERY ELEVATED FLASH FLOOD AND FLOOD RISK THROUGH THE
PERIOD.

.SPOTTER INFORMATION STATEMENT...STORMS SPOTTERS COULD BE ACTIVATED
TO RELAY RAINFALL REPORTS OVER THE NEXT SEVERAL DAYS.

GMZ630>635-650-655-670-675-151645-
NORTHERN MOBILE BAY-SOUTHERN MOBILE BAY-MISSISSIPPI SOUND-
PERDIDO BAY-PENSACOLA BAY SYSTEM-CHOCTAWHATCHEE 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-
1137 AM CDT TUE APR 14 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE COASTAL
WATERS OF ALABAMA AND NORTHWEST FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

WINDS AND SEAS WILL BE HIGHER IN AND AROUND HEAVY SHOWERS AND
THUNDERSTORMS THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

WINDS AND SEAS WILL BE HIGHER IN AND AROUND HEAVY SHOWERS AND
THUNDERSTORMS THROUGH THE REMAINDER OF THE WEEK.

In the hours before

Local storm report, Apr 14, 12:11 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1211 PM CDT TUE APR 14 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1130 AM     FLASH FLOOD      1 S BEATRICE            30.72N 88.95W
04/14/2015                   STONE              MS   EMERGENCY MNGR

            ROAD BARRICADED DUE TO WATER FLOWING OVER THE ROADWAY.

&&

MB

Local storm report, Apr 14, 1:09 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
109 PM CDT TUE APR 14 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0100 PM     WATER SPOUT      5 SE BROOKLEY FIELD AIR 30.58N 88.01W
04/14/2015                   GMZ630             AL   TRAINED SPOTTER

            REPORTED WATERSPOUT OVER MOBILE BAY

&&

MBROWN

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 7:18 PM CDT	Areal Flood Warning	MOB	Mobile	3 hr
Apr 14, 5:10 AM CDT	Flash Flood Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	4 days
Apr 14, 6:40 AM CDT	Marine Dense Fog Advisory	MOB		6 hr
Apr 14, 7:01 AM CDT	Dense Fog Advisory	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	3 hr
Apr 14, 12:24 PM CDT	Areal Flood Advisory	MOB	Clarke, Mobile, Washington	6 hr
Apr 14, 12:53 PM CDT	Special Marine Warning	MOB		97 min
Apr 14, 2:51 PM CDT	Areal Flood Advisory	MOB	Baldwin, Escambia	6 hr
Apr 14, 3:03 PM CDT	Areal Flood Warning	MOB	Mobile	3 hr
Apr 14, 3:18 PM CDT	Areal Flood Warning	MOB	Baldwin	3 hr
Apr 14, 4:01 PM CDT	Areal Flood Advisory	MOB	Conecuh	3 hr
Apr 14, 4:36 PM CDT	Areal Flood Warning	MOB	Baldwin, Mobile	12 hr
Apr 14, 6:26 PM CDT	Areal Flood Advisory	MOB	Conecuh, Covington, Crenshaw, Escambia	3 hr
Apr 14, 9:54 AM CDT	Flash Flood Warning	MOB	George, Stone	6 hr
Apr 14, 3:31 PM CDT	Areal Flood Warning	MOB	George, Stone	9 hr

Nearby

Areal Flood Warnings in Alabama, 2015 Every areal flood warning in 2015

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.