Alert archive / Mississippi / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

February 27, 2017George County, Mississippi

NWS Mobile, AL issued this special weather statement at Feb 27, 2017, 4:44 PM CST for George County, Mississippi. It was in force for 31 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
Feb 27, 2017, 4:44 PM CST (22:44 UTC)
Expired
Feb 27, 2017, 5:15 PM CST
In force
31 min
Issued by
NWS Mobile, AL

County George County, MS

The radar

The Mobile radar (KMOB), 42 km from the middle of the area, began a volume at 22:45 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, 10.7 hours before the alert went out and 117 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 12:00Z on 2017-02-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 157 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 12:00Z on 2017-02-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 389 square meters per square second.1939587897Sfc1 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
157 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
666 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
389 m²/s²
0-3 km storm-relative helicity
406 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

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 Feb 27, 4:12 PM CST, 32 minutes earlier.

Area forecast discussion, Feb 27, 4:12 PM CST, 32 minutes before
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Hazardous weather outlook, Feb 27, 10:50 AM CST, 5 hours 54 minutes before
Hazardous Weather Outlook
National Weather Service Mobile AL
1050 AM CST Mon Feb 27 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-281700-
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-
1050 AM CST Mon Feb 27 2017

This Hazardous Weather Outlook is for portions of south central
Alabama...southwest Alabama...northwest Florida and southeast
Mississippi.

.DAY ONE...Today and Tonight

Scattered to numerous showers and thunderstorms are expected to
develop across the area today, becoming less numerous tonight. A
few storms could become strong producing wind gusts of 40 mph,
dime size hail and heavy downpours this afternoon into early
evening.

There is a moderate risk of rip currents today along the Gulf
beaches of Alabama and Western Florida Panhandle.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

An approaching cold front will bring another round of showers and
thunderstorms to the region Wednesday. A few of these storms may
become severe Wednesday afternoon and evening, mainly along and
north of a Hattiesburg, Mississippi to Luverne, Alabama line.
Damaging winds will be the primary hazard, though a brief tornado
will also be possible.

.SPOTTER INFORMATION STATEMENT...

Activation of SkyWarn Severe Storm Spotter networks may be
necessary on Wednesday.

GMZ630>635-650-655-670-675-281700-
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-
1050 AM CST Mon Feb 27 2017

This Hazardous Weather Outlook is for portions of the coastal
waters of Alabama and northwest Florida.

.DAY ONE...Today and Tonight

Isolated to scattered showers and thunderstorms will develop over
portions of the marine area today. A few storms could be strong
at times with locally higher wind gusts and locally higher seas.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Scattered showers and thunderstorms are expected to develop
Wednesday and Wednesday night ahead of an approaching cold front.
A moderate to strong north to northeast flow and building seas
will develop over the marine area following the passage of a cold
front Wednesday night through Friday. Conditions will likely
become hazardous for small craft.

In the hours before

Special weather statement, Feb 27, 1:50 PM CST, 2 hours 54 minutes before
Special Weather Statement
National Weather Service Mobile AL
150 PM CST MON FEB 27 2017

MSZ076-079-272015-
Greene MS-George MS-
150 PM CST MON FEB 27 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHEASTERN GEORGE AND SOUTHERN GREENE COUNTIES UNTIL 215 PM CST...

At 149 PM CST, the strong thunderstorm was located 8 miles northwest
of Lucedale, moving east at 40 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Leakesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3110 8876 3120 8844 3097 8843 3093 8871
TIME...MOT...LOC 1949Z 256DEG 36KT 3104 8865

DJ17
Special weather statement, Feb 27, 3:09 PM CST, 1 hour 35 minutes before
Special Weather Statement
National Weather Service Mobile AL
309 PM CST MON FEB 27 2017

MSZ078-272200-
Stone MS-
309 PM CST MON FEB 27 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...STONE COUNTY UNTIL 400 PM CST...

At 308 PM CST, strong thunderstorms were located along a line
extending from 6 miles west of Wiggins to near McNeil, and moving
east at 20 mph.

Up to dime size hail and winds in excess of 30 mph will be possible
with these storms.

Locations impacted include...
Wiggins, Perkinston and McHenry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3091 8934 3091 8889 3079 8888 3068 8908
      3068 8924 3065 8924 3065 8934
TIME...MOT...LOC 2108Z 273DEG 18KT 3084 8925 3067 8956

Butts
Local storm report, Feb 27, 4:17 PM CST, 27 minutes before
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Special weather statement, Feb 27, 4:44 PM CST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 27, 9:29 AM CSTSpecial Weather StatementMOBStone61 min
Feb 27, 1:50 PM CSTSpecial Weather StatementMOBGreene25 min
Feb 27, 3:09 PM CSTSpecial Weather StatementMOBStone51 min
Feb 27, 3:32 PM CSTSevere Thunderstorm WarningMOBStone28 min
Feb 27, 4:00 PM CSTSevere Thunderstorm WarningMOBGeorge, Stone45 min

Nearby

Special Weather Statements in Mississippi, 2017Every special weather statement in 2017

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.