Alert archive / Mississippi / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

August 5, 2017Wayne County, Mississippi

NWS Mobile, AL issued this special weather statement at Aug 5, 2017, 7:03 PM CDT for Wayne County, Mississippi. It was in force for 27 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
Aug 5, 2017, 7:03 PM CDT (00:03 UTC)
Expired
Aug 5, 2017, 7:30 PM CDT
In force
27 min
Issued by
NWS Mobile, AL

County Wayne County, MS

The radar

The Mobile radar (KMOB), 91 km from the middle of the area, began a volume at 00:05 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, 0.1 hours before the alert went out and 160 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 2017-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1308 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, Slidell Radar S, LA at 00:00Z on 2017-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 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
1308 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

268 
WWUS84 KMOB 060003
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
703 PM CDT SAT AUG 5 2017
 
MSZ067-075-076-060030-
Perry MS-Greene MS-Wayne MS-
703 PM CDT SAT AUG 5 2017

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHEASTERN PERRY...SOUTHWESTERN WAYNE AND NORTHWESTERN GREENE
COUNTIES UNTIL 730 PM CDT...

At 703 PM CDT, the strong thunderstorm was located 12 miles west of
State Line, or 15 miles east of Richton, moving northwest at 15 mph.

Winds in excess of 30 mph will be possible with this storm.

This storm will remain over mainly rural areas of northeastern
Perry...southwestern Wayne and northwestern Greene Counties.

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 3139 8855 3128 8861 3137 8893 3157 8882
TIME...MOT...LOC 0003Z 118DEG 14KT 3137 8867 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 9:58 AM CDTSpecial Weather StatementMOBChoctaw77 min
Aug 5, 7:39 PM CDTSpecial Weather StatementMOBWayne66 min
Aug 6, 8:51 AM CDTSpecial Weather StatementMOBStone39 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.