Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 95, NWS Mobile, AL

August 26, 2018Perry County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Aug 26, 2018, 6:41 PM CDT for Perry County, Mississippi. It was in force for 23 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 26, 2018, 6:41 PM CDT (23:41 UTC)
Expired
Aug 26, 2018, 7:04 PM CDT
In force
23 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Perry County, MS

The radar

The Mobile radar (KMOB), 94 km from the middle of the area, began a volume at 23:41 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, 11.7 hours before the alert went out and 120 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 2018-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2203 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 2018-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
2203 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

716 
WUUS54 KMOB 262341
SVRMOB
MSC111-270030-
/O.NEW.KMOB.SV.W.0095.180826T2341Z-180827T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
641 PM CDT SUN AUG 26 2018

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Central Perry County in southeastern Mississippi...

* Until 730 PM CDT.

* At 640 PM CDT, a severe thunderstorm was located 6 miles southwest
  of McLain, or 19 miles northeast of Wiggins, moving northwest at 20
  mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Beaumont and New Augusta. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3129 8915 3134 8911 3111 8884 3093 8884
      3106 8915
TIME...MOT...LOC 2340Z 125DEG 16KT 3107 8892 

HAIL...0.75IN
WIND...60MPH
 
$$
1 follow-up statement
646 
WWUS54 KMOB 270004
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
704 PM CDT SUN AUG 26 2018

MSC111-270014-
/O.CAN.KMOB.SV.W.0095.000000T0000Z-180827T0030Z/
Perry MS-
704 PM CDT SUN AUG 26 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PERRY COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3129 8915 3134 8911 3111 8884 3093 8884
      3106 8915
TIME...MOT...LOC 0003Z 125DEG 16KT 3113 8902 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 5:27 PM CDTSpecial Weather StatementMOBGeorge33 min
Aug 26, 5:50 PM CDTSpecial Weather StatementMOBGeorge25 min
Aug 26, 6:27 PM CDTSpecial Weather StatementMOBPerry48 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2018Every severe thunderstorm warning 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.