Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 65, NWS Mobile, AL

June 30, 2018Washington County, Alabama; Greene County, Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jun 30, 2018, 7:02 PM CDT for Washington County, Alabama; Greene County, Wayne County, Mississippi. It was in force for 43 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 30, 2018, 7:02 PM CDT (00:02 UTC)
Expired
Jun 30, 2018, 7:45 PM CDT
In force
43 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Washington County, AL, Greene County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 94 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

Jackson, MS (KJAN), launched 00:00Z, 0.0 hours before the alert went out and 177 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, Jackson, MS at 00:00Z on 2018-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1590 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, Jackson, MS at 00:00Z on 2018-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
1590 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1636 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
29 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.

972 
WUUS54 KMOB 010002
SVRMOB
ALC129-MSC041-153-010045-
/O.NEW.KMOB.SV.W.0065.180701T0002Z-180701T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
702 PM CDT SAT JUN 30 2018

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northwestern Washington County in southwestern Alabama...
  Southeastern Wayne County in southeastern Mississippi...
  Northeastern Greene County in southeastern Mississippi...

* Until 745 PM CDT.

* At 702 PM CDT, a severe thunderstorm was located near Buckatunna,
  or 13 miles west of Chatom, moving south at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  State Line, Buckatunna and Fruitdale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Damaging winds and continuous cloud to ground lightning is occurring 
with this storm. Move indoors immediately. Lightning is one of 
nature's leading killers. Remember, if you can hear thunder, you are 
close enough to be struck by lightning.

&&

LAT...LON 3161 8853 3162 8836 3134 8827 3135 8863
TIME...MOT...LOC 0002Z 000DEG 10KT 3152 8847 

HAIL...<.75IN
WIND...60MPH
 
$$
2 follow-up statements
932 
WWUS54 KMOB 010014
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
714 PM CDT SAT JUN 30 2018

ALC129-MSC041-153-010045-
/O.CON.KMOB.SV.W.0065.000000T0000Z-180701T0045Z/
Washington AL-Wayne MS-Greene MS-
714 PM CDT SAT JUN 30 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR WEST CENTRAL WASHINGTON...SOUTHEASTERN WAYNE AND NORTHEASTERN
GREENE COUNTIES...

At 714 PM CDT, a severe thunderstorm was located near State Line, or 
10 miles west of Chatom, moving south at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
State Line and Fruitdale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3153 8856 3152 8833 3134 8827 3135 8863
TIME...MOT...LOC 0014Z 345DEG 19KT 3142 8843 

HAIL...<.75IN
WIND...60MPH
 
$$
064 
WWUS54 KMOB 010042
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
742 PM CDT SAT JUN 30 2018

ALC129-MSC041-153-010050-
/O.EXP.KMOB.SV.W.0065.000000T0000Z-180701T0045Z/
Washington AL-Wayne MS-Greene MS-
742 PM CDT SAT JUN 30 2018

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL WASHINGTON...
SOUTHEASTERN WAYNE AND NORTHEASTERN GREENE COUNTIES WILL EXPIRE AT
745 PM CDT...
                
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 will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 3153 8856 3152 8833 3134 8827 3135 8863
TIME...MOT...LOC 0040Z 000DEG 10KT 3136 8843 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 11:46 PM CDTSpecial Marine WarningMOB29 min
Jul 1, 12:15 AM CDTSpecial Marine WarningMOB60 min
Jul 1, 1:06 AM CDTSpecial Marine WarningMOB54 min
Jul 1, 4:54 PM CDTSpecial Marine WarningMOB51 min
Jul 1, 5:32 PM CDTSpecial Weather StatementMOBMobile43 min
Jul 1, 6:24 PM CDTSpecial Marine WarningMOB66 min
Jun 30, 7:22 PM CDTSpecial Weather StatementMOBGreene38 min
Jun 30, 7:29 PM CDTSpecial Weather StatementMOBGreene46 min
Jun 30, 7:52 PM CDTSevere Thunderstorm WarningMOBGreene, Perry38 min
Jun 30, 8:26 PM CDTSpecial Weather StatementMOBPerry49 min
Jul 1, 4:24 PM CDTSpecial Weather StatementMOBGeorge51 min
Jul 1, 4:47 PM CDTSpecial Weather StatementMOBStone43 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2018Severe Thunderstorm Warnings in Alabama, 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.