Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

June 29, 2021Perry County, Mississippi

NWS Mobile, AL issued this special weather statement at Jun 29, 2021, 3:49 PM CDT for Perry County, Mississippi. It was in force for 41 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
Jun 29, 2021, 3:49 PM CDT (20:49 UTC)
Expired
Jun 29, 2021, 4:30 PM CDT
In force
41 min
Issued by
NWS Mobile, AL

County Perry County, MS

The radar

The Mobile radar (KMOB), 96 km from the middle of the area, began a volume at 20:51 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, 8.8 hours before the alert went out and 134 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 2021-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1396 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 12:00Z on 2021-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
1396 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
-28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

397 
WWUS84 KMOB 292049
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
349 PM CDT Tue Jun 29 2021
 
MSZ075-076-292130-
Perry MS-Greene MS-
349 PM CDT Tue Jun 29 2021

...STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING COUNTIES...PERRY 
AND SOUTHWESTERN GREENE COUNTIES UNTIL 430 PM CDT...

At 349 PM CDT, a cluster of strong thunderstorms was located over 
McLain, or 14 miles west of Leakesville, moving northwest at 15 mph.

Wind gusts of up to 40 mph will be possible with these storms.

Locations impacted include...
Richton, Beaumont, New Augusta and McLain. 

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.

&&

LAT...LON 3143 8915 3143 8887 3129 8875 3102 8875
      3105 8915
TIME...MOT...LOC 2049Z 122DEG 11KT 3114 8880 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 12:52 PM CDTSpecial Weather StatementMOBMobile38 min
Jun 29, 1:02 PM CDTSpecial Marine WarningMOB49 min
Jun 29, 1:30 PM CDTSpecial Weather StatementMOBMobile45 min
Jun 29, 3:09 PM CDTSpecial Weather StatementMOBEscambia51 min
Jun 29, 1:37 PM CDTSpecial Weather StatementMOBOkaloosa53 min
Jun 29, 1:58 PM CDTAreal Flood AdvisoryMOBOkaloosa2 hr
Jun 29, 2:26 PM CDTSpecial Weather StatementMOBOkaloosa49 min
Jun 29, 2:44 PM CDTSpecial Weather StatementMOBStone46 min
Jun 29, 5:04 PM CDTSpecial Weather StatementMOBGeorge26 min

Nearby

Special Weather Statements in Mississippi, 2021Every special weather statement in 2021

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.