Alert archive / Alabama / Wind Advisories in 2011

Wind Advisory 7, NWS Mobile, AL

April 11, 201110 counties in Alabama; 5 counties in Mississippi

NWS Mobile, AL issued this wind advisory at Apr 11, 2011, 4:02 AM CDT for 10 counties in Alabama; 5 counties in Mississippi. It took effect at Apr 11, 2011, 10:00 AM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Apr 11, 2011, 4:02 AM CDT (09:02 UTC)
In effect from
Apr 11, 2011, 10:00 AM CDT
Expired
Apr 11, 2011, 8:51 PM CDT
In force
11 hr
Issued by
NWS Mobile, AL

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 96 km from the middle of the area, began a volume at 09:07 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

Birmingham, AL (KBMX), launched 00:00Z, 9.0 hours before the alert went out and 215 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2011-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2011-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
126 J/kg
Mixed-layer CIN
-436 J/kg
Mixed-layer LCL
1576 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

484 
WWUS74 KMOB 110902
NPWMOB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
402 AM CDT MON APR 11 2011

...WINDY CONDITIONS TODAY ALONG THE NORTH CENTRAL GULF COASTAL REGION...

.AN APPROACHING SPRING TIME COLD FRONT WILL CREATE WINDY CONDITIONS TODAY
ACROSS THE NORTH CENTRAL GULF COASTAL REGION. THE COLD FRONT WILL PASS
OVER THE REGION DURING THE EVENING BRINGING AN END TO THE WINDY
CONDITIONS LIKELY BY LATE EVENING.

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-111715-
/O.NEW.KMOB.WI.Y.0007.110411T1500Z-110412T0400Z/
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-
INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...CHATOM...
MILLRY...JACKSON...THOMASVILLE...GROVE HILL...CAMDEN...
PINE HILL...HOMEWOOD...MONROEVILLE...EVERGREEN...GREENVILLE...
LUVERNE...BRANTLEY...ATMORE...BREWTON...EAST BREWTON...
ANDALUSIA...OPP...MOBILE...PRICHARD...SARALAND...BAY MINETTE...
TILLMANS CORNER...THEODORE...DAPHNE...FAIRHOPE...FOLEY...
SPANISH FORT...CENTURY...FLOMATON...MOLINO...PENSACOLA...
FERRY PASS...BRENT...WEST PENSACOLA...BELLVIEW...ENSLEY...
MYRTLE GROVE...JAY...PACE...MILTON...CRESTVIEW...WRIGHT...
SEMINOLE...EGLIN AFB...VALPARAISO...WAYNESBORO...RICHTON...
BEAUMONT...NEW AUGUSTA...LEAKESVILLE...MCLAIN...WIGGINS...
LUCEDALE
402 AM CDT MON APR 11 2011

...WIND ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 11 PM CDT
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 11 PM
CDT THIS EVENING. 

AN APPROACHING SPRING TIME COLD FRONT WILL CREATE  WINDY CONDITIONS
TODAY ACROSS THE NORTH CENTRAL GULF COASTAL REGION. THE COLD FRONT WILL
PASS OVER THE REGION DURING THE EVENING BRINGING AN END TO THE WINDY
CONDITIONS LIKELY BY LATE EVENING.

FREQUENT WIND GUSTS AS HIGH AS 35 MPH CAN BE EXPECTED THIS AFTERNOON
AND EVENING NOT ASSOCIATED WITH THUNDERSTORMS. THIS MAY DOWN SOME
ROTTEN OR POORLY ROOTED TREES AND ALSO LARGE TREE LIMBS SIMILAR TO
LAST MONDAY'S EVENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 25 TO 39 MPH ARE EXPECTED.
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. ALSO...LIGHT
UNSECURED OBJECTS SUCH AS GARBAGE CANS MAY BE BLOWN AROUND.

&&

$$
2 follow-up statements
661 
WWUS74 KMOB 111858
NPWMOB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
158 PM CDT MON APR 11 2011

...WINDY CONDITIONS WILL CONTINUE THIS AFTERNOON AND EVENING ALONG
THE NORTH CENTRAL GULF COASTAL REGION...

.AN APPROACHING COLD FRONT WILL CONTINUE TO CREATE WINDY CONDITIONS
ACROSS THE NORTH CENTRAL GULF COASTAL REGION LATE THIS AFTERNOON AND
THIS EVENING. THE COLD FRONT WILL MOVE EAST OF THE AREA BY LATE THIS 
EVENING...BRINGING A WINDSHIFT TO THE NORTHWEST BUT ALSO AN END TO
THE WINDY CONDITIONS. 

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-120300-
/O.CON.KMOB.WI.Y.0007.000000T0000Z-110412T0400Z/
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-
INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...CHATOM...
MILLRY...JACKSON...THOMASVILLE...GROVE HILL...CAMDEN...
PINE HILL...HOMEWOOD...MONROEVILLE...EVERGREEN...GREENVILLE...
LUVERNE...BRANTLEY...ATMORE...BREWTON...EAST BREWTON...
ANDALUSIA...OPP...MOBILE...PRICHARD...SARALAND...BAY MINETTE...
TILLMANS CORNER...THEODORE...DAPHNE...FAIRHOPE...FOLEY...
SPANISH FORT...CENTURY...FLOMATON...MOLINO...PENSACOLA...
FERRY PASS...BRENT...WEST PENSACOLA...BELLVIEW...ENSLEY...
MYRTLE GROVE...JAY...PACE...MILTON...CRESTVIEW...WRIGHT...
SEMINOLE...EGLIN AFB...VALPARAISO...WAYNESBORO...RICHTON...
BEAUMONT...NEW AUGUSTA...LEAKESVILLE...MCLAIN...WIGGINS...
LUCEDALE
158 PM CDT MON APR 11 2011

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 PM CDT THIS EVENING...

A WIND ADVISORY REMAINS IN EFFECT UNTIL 11 PM CDT THIS EVENING. 

AN APPROACHING COLD FRONT WILL CONTINUE TO CREATE WINDY CONDITIONS
ACROSS THE NORTH CENTRAL GULF COASTAL REGION LATE THIS AFTERNOON AND
THIS EVENING. THE COLD FRONT WILL MOVE EAST OF THE AREA BY LATE THIS 
EVENING...BRINGING A WINDSHIFT TO THE NORTHWEST BUT ALSO AN END TO
THE WINDY CONDITIONS. 

FREQUENT WIND GUSTS AS HIGH 25 TO 30 MPH CAN BE EXPECTED TO CONTINUE
THROUGH THE LATE AFTERNOON HOURS AND THROUGH THE EVENING HOURS. THESE
WINDS ARE WILL NOT BE ASSOCIATED WITH THUNDERSTORMS...BUT RATHER THE
DIFFERENCE IN PRESSURES BETWEEN HIGH PRESSURE TO THE EAST AND
APPROACHING LOW PRESSURE FROM THE WEST. WINDS OF THIS SPEED MAY DOWN
SOME ROTTEN OR POORLY ROOTED TREES AND ALSO LARGE TREE LIMBS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 25 TO 39 MPH ARE EXPECTED.
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR
HIGH PROFILE VEHICLES. USE EXTRA CAUTION. ALSO...LIGHT UNSECURED
OBJECTS SUCH AS GARBAGE CANS MAY BE BLOWN AROUND.

&&

$$
743 
WWUS74 KMOB 120151
NPWMOB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
851 PM CDT MON APR 11 2011

...WIND ADVISORY IS CANCELLED...

.SUSTAINED WINDS HAVE LOWERED TO BETWEEN 13 AND 17 MPH ACROSS THE
AREA WITH ISOLATED GUSTS OF 20 AND 25 MPH. THEREFORE...THE NATIONAL
WEATHER SERVICE IN MOBILE HAS CANCELLED THE WIND ADVISORY.

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-120300-
/O.CAN.KMOB.WI.Y.0007.000000T0000Z-110412T0400Z/
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-
INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...CHATOM...
MILLRY...JACKSON...THOMASVILLE...GROVE HILL...CAMDEN...
PINE HILL...HOMEWOOD...MONROEVILLE...EVERGREEN...GREENVILLE...
LUVERNE...BRANTLEY...ATMORE...BREWTON...EAST BREWTON...
ANDALUSIA...OPP...MOBILE...PRICHARD...SARALAND...BAY MINETTE...
TILLMANS CORNER...THEODORE...DAPHNE...FAIRHOPE...FOLEY...
SPANISH FORT...CENTURY...FLOMATON...MOLINO...PENSACOLA...
FERRY PASS...BRENT...WEST PENSACOLA...BELLVIEW...ENSLEY...
MYRTLE GROVE...JAY...PACE...MILTON...CRESTVIEW...WRIGHT...
SEMINOLE...EGLIN AFB...VALPARAISO...WAYNESBORO...RICHTON...
BEAUMONT...NEW AUGUSTA...LEAKESVILLE...MCLAIN...WIGGINS...
LUCEDALE
851 PM CDT MON APR 11 2011

...WIND ADVISORY IS CANCELLED...

SUSTAINED WINDS HAVE LOWERED TO BETWEEN 13 AND 17 MPH ACROSS THE
AREA WITH ISOLATED GUSTS OF 20 AND 25 MPH. THEREFORE...THE NATIONAL
WEATHER SERVICE IN MOBILE HAS CANCELLED THE WIND ADVISORY.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 4:38 AM CDTSmall Craft AdvisoryMOB29 hr
Apr 11, 6:45 PM CDTSevere Thunderstorm WarningMOBChoctaw60 min
Apr 11, 5:44 AM CDTRed Flag WarningMOB12 hr

Nearby

Wind Advisories in Alabama, 2011Wind Advisories in Mississippi, 2011Wind Advisories in Florida, 2011Every wind advisory 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.