Alert archive / Alabama / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 46, NWS Mobile, AL

June 9, 2018Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 9, 2018, 3:44 PM CDT for Covington County, Alabama. It was in force for 46 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 9, 2018, 3:44 PM CDT (20:44 UTC)
Expired: Jun 9, 2018, 4:30 PM CDT
In force: 46 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Covington County, AL

The radar

The Eglin Afb radar (KEVX), 80 km from the middle of the area, began a volume at 20:43 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.7 hours before the alert went out and 209 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 129 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1174 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

726 
WUUS54 KMOB 092044
SVRMOB
ALC039-092130-
/O.NEW.KMOB.SV.W.0046.180609T2044Z-180609T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
344 PM CDT SAT JUN 9 2018

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northeastern Covington County in south central Alabama...

* Until 430 PM CDT.

* At 344 PM CDT, a severe thunderstorm was located 5 miles south of
  Opp, moving northeast at 15 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Opp.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3109 8623 3117 8642 3144 8631 3141 8620
      3113 8619
TIME...MOT...LOC 2044Z 214DEG 11KT 3120 8628 

HAIL...1.00IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 1:14 PM CDT	Special Weather Statement	MOB	Baldwin	61 min
Jun 9, 1:37 PM CDT	Special Weather Statement	MOB	Escambia	53 min
Jun 9, 1:48 PM CDT	Special Weather Statement	MOB	Baldwin	42 min
Jun 9, 2:32 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	43 min
Jun 9, 2:50 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	40 min
Jun 9, 3:31 PM CDT	Special Weather Statement	MOB	Mobile	59 min
Jun 9, 3:38 PM CDT	Special Weather Statement	MOB	Covington	37 min
Jun 9, 3:58 PM CDT	Special Weather Statement	MOB	Washington	47 min
Jun 9, 4:43 PM CDT	Special Weather Statement	MOB	Crenshaw	47 min
Jun 9, 4:50 PM CDT	Special Weather Statement	MOB	Choctaw	40 min
Jun 9, 5:04 PM CDT	Special Weather Statement	MOB	Butler	41 min
Jun 9, 5:09 PM CDT	Severe Thunderstorm Warning	MOB	Butler	66 min
Jun 9, 5:11 PM CDT	Special Weather Statement	MOB	Wilcox	49 min
Jun 9, 5:20 PM CDT	Special Weather Statement	MOB	Clarke	40 min
Jun 9, 5:43 PM CDT	Areal Flood Advisory	MOB	Butler	2 hr
Jun 9, 6:01 PM CDT	Special Weather Statement	MOB	Wilcox	44 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2018 Every 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.