Alert archive / Alabama / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 73, NWS Mobile, AL

July 21, 2018Butler County, Covington County, Crenshaw County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 21, 2018, 11:40 PM CDT for Butler County, Covington County, Crenshaw County, Alabama. It was in force for 35 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
Jul 21, 2018, 11:40 PM CDT (04:40 UTC)
Expired
Jul 22, 2018, 12:15 AM CDT
In force
35 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Butler County, AL, Covington County, AL, Crenshaw County, AL

The radar

The Ft Rucker radar (KEOX), 84 km from the middle of the area, began a volume at 04:43 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

Birmingham, AL (KBMX), launched 00:00Z, 4.7 hours before the alert went out and 195 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, Birmingham, AL at 00:00Z on 2018-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2210 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2018-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.19395878Sfc1 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
2210 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1459 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.7
Supercell composite
8.3

Open this sounding in Storm Lab

The text

As transmitted.

544 
WUUS54 KMOB 220440
SVRMOB
ALC013-039-041-220515-
/O.NEW.KMOB.SV.W.0073.180722T0440Z-180722T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1140 PM CDT SAT JUL 21 2018

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southeastern Butler County in south central Alabama...
  Southern Crenshaw County in south central Alabama...
  Northern Covington County in south central Alabama...

* Until 1215 AM CDT.

* At 1140 PM CDT, a severe thunderstorm was located 6 miles north of
  Gantt, or 12 miles north of Andalusia, moving southeast at 40 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...
  Brantley, Dozier and Gantt. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3131 8620 3143 8661 3162 8655 3164 8619
TIME...MOT...LOC 0440Z 294DEG 35KT 3149 8649 

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

05/RR
1 follow-up statement
492 
WWUS54 KMOB 220452
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1152 PM CDT SAT JUL 21 2018

ALC013-220502-
/O.CAN.KMOB.SV.W.0073.000000T0000Z-180722T0515Z/
Butler AL-
1152 PM CDT SAT JUL 21 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUTLER COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3131 8620 3137 8640 3163 8641 3164 8619
TIME...MOT...LOC 0452Z 294DEG 35KT 3144 8636 

$$

ALC039-041-220515-
/O.CON.KMOB.SV.W.0073.000000T0000Z-180722T0515Z/
Crenshaw AL-Covington AL-
1152 PM CDT SAT JUL 21 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR SOUTHEASTERN CRENSHAW AND NORTHEASTERN COVINGTON COUNTIES...

At 1152 PM CDT, a severe thunderstorm was located near Dozier, or 11
miles northeast of Andalusia, moving southeast at 40 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...
Brantley and Dozier. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3131 8620 3137 8640 3163 8641 3164 8619
TIME...MOT...LOC 0452Z 294DEG 35KT 3144 8636 

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

05/RR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 10:08 PM CDTSpecial Weather StatementMOBMonroe67 min
Jul 21, 10:18 PM CDTSevere Thunderstorm WarningMOBClarke, Conecuh, Monroe, Wilcox57 min
Jul 21, 10:47 PM CDTSpecial Weather StatementMOBConecuh28 min
Jul 21, 11:05 PM CDTSevere Thunderstorm WarningMOBButler, Conecuh, Covington, Crenshaw40 min
Jul 22, 2:25 AM CDTSpecial Weather StatementMOBButler, Covington65 min
Jul 22, 3:22 AM CDTRip Current StatementMOBBaldwin, Mobile24 hr
Jul 22, 10:50 AM CDTSpecial Weather StatementMOBChoctaw, Wilcox40 min
Jul 22, 11:20 AM CDTSevere Thunderstorm WarningMOBChoctaw14 min
Jul 22, 11:33 AM CDTSpecial Weather StatementMOBChoctaw, Clarke, Wilcox42 min
Jul 22, 11:40 AM CDTSevere Thunderstorm WarningMOBClarke, Wilcox65 min
Jul 22, 12:06 PM CDTSevere Thunderstorm WarningMOBClarke54 min
Jul 22, 12:33 PM CDTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox23 min
Jul 22, 12:35 PM CDTSevere Thunderstorm WarningMOBButler, Conecuh, Covington15 min
Jul 22, 12:47 PM CDTSevere Thunderstorm WarningMOBButler, Conecuh, Covington, Crenshaw41 min
Jul 22, 12:54 PM CDTSevere Thunderstorm WarningMOBClarke, Monroe36 min
Jul 22, 1:07 PM CDTSpecial Weather StatementMOBCrenshaw38 min
Jul 22, 1:13 PM CDTSpecial Weather StatementMOBMonroe62 min
Jul 22, 1:18 PM CDTSevere Thunderstorm WarningMOBClarke, Conecuh, Escambia, Monroe18 min
Jul 22, 1:21 PM CDTSevere Thunderstorm WarningMOBCovington39 min
Jul 22, 1:25 PM CDTSpecial Weather StatementMOBButler, Crenshaw80 min
Jul 22, 2:02 PM CDTSevere Thunderstorm WarningMOBCovington58 min
Jul 22, 2:17 PM CDTSpecial Weather StatementMOBClarke43 min
Jul 22, 2:27 PM CDTSevere Thunderstorm WarningMOBClarke, Monroe37 min
Jul 22, 2:29 PM CDTTornado WarningMOBClarke23 min
Jul 22, 3:18 PM CDTSpecial Marine WarningMOB57 min
Jul 22, 6:29 PM CDTSpecial Marine WarningMOB61 min

Nearby

Severe 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.