Alert archive / Mississippi / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

May 12, 2017Greene County, Mississippi

NWS Mobile, AL issued this special weather statement at May 12, 2017, 11:21 AM CDT for Greene County, Mississippi. It was in force for 54 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
May 12, 2017, 11:21 AM CDT (16:21 UTC)
Expired
May 12, 2017, 12:15 PM CDT
In force
54 min
Issued by
NWS Mobile, AL

County Greene County, MS

The radar

The Mobile radar (KMOB), 32 km from the middle of the area, began a volume at 16:22 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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 4.4 hours before the alert went out and 162 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, Eglin AFB/Valpar, FL at 12:00Z on 2017-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 704 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, Eglin AFB/Valpar, FL at 12:00Z on 2017-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
704 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
478 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

572 
WWUS84 KMOB 121621
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
1121 AM CDT FRI MAY 12 2017
 
ALZ052-053-261-263-MSZ076-079-121715-
Clarke AL-Washington AL-Mobile Central AL-Mobile Inland AL-Greene MS-
George MS-
1121 AM CDT FRI MAY 12 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN MOBILE...SOUTHERN WASHINGTON...SOUTHERN CLARKE...EASTERN
GEORGE AND EASTERN GREENE COUNTIES UNTIL 1215 PM CDT...

At 1120 AM CDT, the strong thunderstorm was located near Lucedale,
moving northeast at 30 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Saraland, Satsuma, Citronelle, Lucedale, Creola, Leakesville,
Chunchula, Gulfcrest, Deer Park, Axis, Calvert, Mount Vernon, Semmes,
Fruitdale, McIntosh, Wilmer and Movico.

A severe thunderstorm watch remains in effect until 400 PM CDT for
southwestern Alabama...and southeastern Mississippi.

LAT...LON 3074 8841 3073 8863 3134 8859 3137 8793
      3112 8794 3109 8797 3107 8796 3107 8795
      3090 8796 3088 8798 3088 8797 3087 8798
      3087 8797 3086 8798 3086 8797 3085 8796
      3073 8841
TIME...MOT...LOC 1620Z 217DEG 27KT 3084 8852 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 11:59 AM CDTSevere Thunderstorm WarningMOBMobile, Washington61 min
May 12, 12:34 PM CDTSevere Thunderstorm WarningMOBMobile56 min
May 12, 12:41 PM CDTSpecial Marine WarningMOB2 hr
May 12, 12:46 PM CDTSpecial Weather StatementMOBConecuh, Escambia, Monroe59 min
May 12, 1:05 PM CDTSevere Thunderstorm WarningMOBBaldwin40 min
May 12, 1:11 PM CDTSevere Thunderstorm WarningMOBEscambia27 min
May 12, 1:16 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile44 min
May 12, 1:28 PM CDTSevere Thunderstorm WarningMOBMobile47 min
May 12, 1:43 PM CDTSevere Thunderstorm WarningMOBBaldwin, Escambia47 min
May 12, 2:01 PM CDTSpecial Marine WarningMOB59 min
May 12, 2:06 PM CDTSpecial Weather StatementMOBCovington54 min
May 12, 2:15 PM CDTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia60 min
May 12, 2:37 PM CDTSpecial Marine WarningMOB53 min
May 12, 2:43 PM CDTSpecial Marine WarningMOB62 min
May 12, 2:47 PM CDTAreal Flood AdvisoryMOBBaldwin3 hr
May 12, 2:49 PM CDTSevere Thunderstorm WarningMOBCovington41 min
May 12, 2:55 PM CDTSpecial Marine WarningMOB65 min
May 12, 3:00 PM CDTSevere Thunderstorm WarningMOBCovington60 min
May 12, 3:11 PM CDTSpecial Marine WarningMOB2 hr
May 12, 3:46 PM CDTSpecial Marine WarningMOB119 min
May 12, 5:45 PM CDTSpecial Marine WarningMOB90 min
May 12, 1:59 PM CDTSpecial Weather StatementMOBEscambia61 min
May 12, 2:35 PM CDTSevere Thunderstorm WarningMOBEscambia, Okaloosa, Santa Rosa40 min
May 12, 10:27 AM CDTSpecial Weather StatementMOBGeorge48 min
May 12, 10:45 AM CDTSevere Thunderstorm WarningMOBGeorge, Greene, Perry, Stone60 min
May 12, 10:48 AM CDTSpecial Weather StatementMOBWayne42 min
May 12, 11:41 AM CDTSevere Thunderstorm WarningMOBGeorge, Stone64 min
May 12, 11:54 AM CDTTornado WarningMOBStone10 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.