Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Mobile, AL

April 12, 2016Mobile County, Alabama

NWS Mobile, AL issued this special weather statement at Apr 12, 2016, 4:53 AM CDT for Mobile County, Alabama. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 12, 2016, 4:53 AM CDT (09:53 UTC)
Expired
Apr 12, 2016, 6:00 AM CDT
In force
67 min
Issued by
NWS Mobile, AL

County Mobile County, AL

The radar

The Mobile radar (KMOB), 40 km from the middle of the area, began a volume at 09:54 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 00:00Z, 9.9 hours before the alert went out and 148 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, Slidell Radar S, LA at 00:00Z on 2016-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 440 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2016-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 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
440 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 11, 11:42 PM CDT, 5 hours 11 minutes earlier.

Area forecast discussion, Apr 11, 11:42 PM CDT, 5 hours 11 minutes before
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Hazardous weather outlook, Apr 11, 6:23 AM CDT, 22 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOBILE AL
623 AM CDT MON APR 11 2016

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-121130-
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-MOBILE INLAND-BALDWIN INLAND-MOBILE CENTRAL-
BALDWIN CENTRAL-MOBILE COASTAL-BALDWIN COASTAL-ESCAMBIA INLAND-
ESCAMBIA COASTAL-SANTA ROSA INLAND-SANTA ROSA COASTAL-
OKALOOSA INLAND-OKALOOSA COASTAL-WAYNE-PERRY-GREENE-STONE-GEORGE-
623 AM CDT MON APR 11 2016

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A HIGH RISK FOR DANGEROUS RIP CURRENTS ALONG THE GULF
BEACHES OF ALABAMA AND NORTHWEST FLORIDA THROUGH TONIGHT.

THUNDERSTORMS INCREASE IN COVERAGE OVERNIGHT AND EARLY TUESDAY
MORNING WITH MAYBE AN ISOLATED STRONG TO MARGINALLY SEVERE
THUNDERSTORM POSSIBLE. GUSTY WINDS AND HAIL WILL BE MAIN THREATS
THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A HIGH RISK FOR DANGEROUS RIP CURRENTS ALONG THE GULF
BEACHES OF ALABAMA AND NORTHWEST FLORIDA THROUGH TUESDAY EVENING AND
POSSIBLY LATER IN THE WEEK.

A FEW STRONG TO MARGINALLY SEVERE THUNDERSTORMS WILL BE POSSIBLE
MOSTLY TUESDAY MORNING AHEAD OF A COLD FRONT APPROACHING FROM THE
NORTH. GUSTY WINDS AND HAIL WILL BE THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS IS NOT
EXPECTED THROUGH SUNDAY.

GMZ630>635-650-655-670-675-121130-
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-
623 AM CDT MON APR 11 2016

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

.DAY ONE...TODAY AND TONIGHT

HAZARDOUS CONDITIONS FOR SMALL CRAFT CAN BE EXPECTED OVER THE MARINE
AREA TODAY AND TONIGHT.

A FEW STRONG THUNDERSTORMS WITH GUSTY WINDS WILL ALSO BE POSSIBLE
LATE TONIGHT AND EARLY TUESDAY MORNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

HAZARDOUS CONDITIONS FOR SMALL CRAFT CAN WILL BE POSSIBLE TUESDAY
THROUGH MIDWEEK...AHEAD AND IN THE WAKE OF A COLD FRONT THAT MOVES
ACROSS REGION LATE TUESDAY AND TUESDAY NIGHT.

A FEW STRONG THUNDERSTORMS WITH GUSTY WINDS WILL ALSO BE POSSIBLE ON
TUESDAY.

In the hours before

Special weather statement, Apr 12, 4:34 AM CDT, 19 minutes before
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Special weather statement, Apr 12, 4:53 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 7:37 PM CDTSpecial Weather StatementMOBClarke, Washington38 min
Apr 11, 8:10 PM CDTSpecial Weather StatementMOBClarke, Monroe, Washington50 min
Apr 11, 8:54 PM CDTSpecial Weather StatementMOBWashington51 min
Apr 11, 9:43 PM CDTSpecial Weather StatementMOBEscambia47 min
Apr 11, 10:13 PM CDTSpecial Marine WarningMOB47 min
Apr 12, 12:04 AM CDTSpecial Marine WarningMOB41 min
Apr 12, 4:34 AM CDTSpecial Weather StatementMOBBaldwin41 min
Apr 12, 4:55 AM CDTSpecial Marine WarningMOB35 min
Apr 12, 7:09 AM CDTSpecial Weather StatementMOBMobile66 min
Apr 12, 7:11 AM CDTSpecial Marine WarningMOB34 min
Apr 12, 11:05 AM CDTRiver Flood WarningMOBGeorge, Greene, Perry8 days
Apr 12, 11:07 AM CDTRiver Flood WarningMOBGeorge, Greene, Wayne7 days

Nearby

Special Weather Statements in Alabama, 2016Every special weather statement in 2016

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.