Alert archive / Mississippi / Special Weather Statements in 2018

Special Weather Statement, NWS Mobile, AL

July 31, 2018George County, Mississippi

NWS Mobile, AL issued this special weather statement at Jul 31, 2018, 11:43 AM CDT for George County, Mississippi. It was in force for 32 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
Jul 31, 2018, 11:43 AM CDT (16:43 UTC)
Expired
Jul 31, 2018, 12:15 PM CDT
In force
32 min
Issued by
NWS Mobile, AL

County George County, MS

The radar

The Mobile radar (KMOB), 39 km from the middle of the area, began a volume at 16:45 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, 4.7 hours before the alert went out and 128 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 2018-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2932 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 2018-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 square meters per square second.1939Sfc1 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
2932 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
754 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 31, 7:00 AM CDT, 4 hours 43 minutes earlier.

Area forecast discussion, Jul 31, 7:00 AM CDT, 4 hours 43 minutes before
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Hazardous weather outlook, Jul 31, 5:16 AM CDT, 6 hours 27 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Mobile AL
516 AM CDT Tue Jul 31 2018

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-011030-
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-
516 AM CDT Tue Jul 31 2018

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

.DAY ONE...Today and Tonight.

Better coverage of showers and thunderstorms are expected today and
tonight possibly leading to some minor nuisance flooding later today
and overnight. Gusty winds and frequent cloud to ground lightning
will also accompany the stronger thunderstorms through tonight.

There is a moderate risk for dangerous rip currents along the gulf
beaches of Alabama and Northwest Florida through tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Better coverage of showers and thunderstorms will continue over the
forecast area Wednesday through early Friday possibly leading to some
localized flooding each day through early Friday. Gusty winds and
frequent cloud to ground lightning will also accompany the stronger
thunderstorms throughout the week.

A moderate risk for rip currents can be expected along the Gulf
beaches of Alabama and Northwest Florida Wednesday through late in
the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ630>636-650-655-670-675-011030-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
Perdido Bay-Pensacola Bay System-Western Choctawhatchee Bay-
Eastern Choctawhatchee Bay-
Coastal waters from Pensacola FL to Pascagoula MS out 20 NM-
Coastal waters from Okaloosa Walton County Line FL to Pensacola FL
out 20 NM-Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM-
Waters from Okaloosa Walton County Line FL to Pensacola FL from
20 to 60 NM-
516 AM CDT Tue Jul 31 2018
Better coverage of showers and thunderstorms can be expected over
the marine area later today and tonight. Periods of very heavy rain
reducing visibilties to less than one nautical mile, frequent
lightning and gusty winds will accompany the stronger storms.

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

.DAY ONE...Today and Tonight.

Better coverage of showers and thunderstorms can be expected over
the marine area later today and tonight. Periods of very heavy rain
reducing visibilties to less than one nautical mile, frequent
lightning and gusty winds will accompany the stronger storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Better coverage of showers and thunderstorms can be expected over
the marine area through early Friday. Periods of very heavy rain
reducing visibilties to less than one nautical mile, frequent
lightning and gusty winds will accompany the stronger storms.

In the hours before

Special weather statement, Jul 31, 10:00 AM CDT, 1 hour 43 minutes before
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Special weather statement, Jul 31, 10:52 AM CDT, 51 minutes before
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Special weather statement, Jul 31, 11:32 AM CDT, 11 minutes before
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Special weather statement, Jul 31, 11:35 AM CDT, 8 minutes before
Special Weather Statement
National Weather Service Mobile AL
1135 AM CDT TUE JUL 31 2018

ALZ052-053-055-059-261-262-311715-
Clarke AL-Baldwin Inland AL-Monroe AL-Escambia AL-Washington AL-
Mobile Inland AL-
1135 AM CDT TUE JUL 31 2018

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN MONROE...NORTHEASTERN MOBILE...NORTHWESTERN BALDWIN...
SOUTHEASTERN WASHINGTON...SOUTH CENTRAL CLARKE AND WEST CENTRAL
ESCAMBIA COUNTIES UNTIL 1215 PM CDT...

At 1135 AM CDT, the strong thunderstorm was located 8 miles east of
Calvert, or 17 miles north of Bay Minette, moving northeast at 15
mph.

Winds gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Chunchula, Gulfcrest, Axis, Mount Vernon, Calvert and Movico.

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.

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

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3098 8828 3140 8772 3118 8752 3085 8815
TIME...MOT...LOC 1635Z 221DEG 15KT 3112 8787
Special weather statement, Jul 31, 11:43 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Mobile AL
1143 AM CDT TUE JUL 31 2018

ALZ261-MSZ076-079-311715-
Mobile Inland AL-Greene MS-George MS-
1143 AM CDT TUE JUL 31 2018

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...WEST
CENTRAL MOBILE...GEORGE AND SOUTH CENTRAL GREENE COUNTIES UNTIL 1215
PM CDT...

At 1143 AM CDT, the strong thunderstorm was located 10 miles
southwest of Lucedale, moving northeast at 15 mph.

Winds gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Lucedale.

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.

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

&&

LAT...LON 3106 8853 3085 8833 3073 8855 3073 8873
      3081 8880
TIME...MOT...LOC 1643Z 231DEG 14KT 3079 8868

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 9:38 AM CDTSpecial Marine WarningMOB22 min
Jul 31, 10:00 AM CDTSpecial Weather StatementMOBConecuh, Escambia60 min
Jul 31, 10:21 AM CDTSevere Thunderstorm WarningMOBBaldwin, Escambia16 min
Jul 31, 10:30 AM CDTSpecial Marine WarningMOB38 min
Jul 31, 10:52 AM CDTSpecial Weather StatementMOBEscambia53 min
Jul 31, 11:03 AM CDTAreal Flood AdvisoryMOBConecuh, Escambia, Monroe57 min
Jul 31, 11:32 AM CDTSpecial Weather StatementMOBMobile28 min
Jul 31, 11:35 AM CDTSpecial Weather StatementMOBWashington40 min
Jul 31, 11:40 AM CDTAreal Flood AdvisoryMOBButler65 min
Jul 31, 11:46 AM CDTSpecial Weather StatementMOBCovington29 min
Jul 31, 11:56 AM CDTSpecial Weather StatementMOBButler34 min
Jul 31, 12:15 PM CDTSpecial Weather StatementMOBCovington30 min
Jul 31, 12:39 PM CDTSpecial Weather StatementMOBCovington36 min
Jul 31, 1:11 PM CDTSpecial Weather StatementMOBWashington49 min
Jul 31, 1:50 PM CDTFlash Flood WatchMOBBaldwin, Butler, Conecuh, Covington, Crenshaw, Escambia and 3 more48 hr
Jul 31, 2:03 PM CDTSpecial Weather StatementMOBClarke42 min
Jul 31, 2:27 PM CDTSpecial Weather StatementMOBChoctaw48 min
Jul 31, 2:38 PM CDTAreal Flood AdvisoryMOBChoctaw3 hr
Jul 31, 3:04 PM CDTFlash Flood WarningMOBChoctaw3 hr
Jul 31, 4:18 PM CDTAreal Flood AdvisoryMOBWilcox3 hr
Jul 31, 1:30 PM CDTSevere Thunderstorm WarningMOBGreene, Perry45 min
Jul 31, 1:36 PM CDTSevere Thunderstorm WarningMOBGreene, Perry39 min
Jul 31, 2:28 PM CDTSpecial Weather StatementMOBWayne47 min

Nearby

Special Weather Statements in Mississippi, 2018Every special weather statement in 2018

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.