Alert archive / Alabama / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 79, NWS Mobile, AL

July 22, 20184 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 22, 2018, 12:47 PM CDT for 4 counties in Alabama. It was in force for 41 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 22, 2018, 12:47 PM CDT (17:47 UTC)
Expired
Jul 22, 2018, 1:28 PM CDT
In force
41 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Ft Rucker radar (KEOX), 88 km from the middle of the area, began a volume at 17:48 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.

What was reported inside it

TimeReportWhereRemark
Jul 22, 1:13 PM CDTHAIL 2.75Heath, ALVIDEO ON SOCIAL MEDIA OF BASEBALL SIZE HAIL FALLING AND COVERING THE GROUND.
Jul 22, 1:15 PM CDTHAIL 1.75Straughn, ALGOLF BALL SIZE HAIL AND HAIL COVERING THE GROUND (RESULTING IN HAIL FOG) IN THE STRAUGHN AREA. PICTURES VIA SOCIAL MEDIA.
Jul 22, 1:20 PM CDTHAIL 23 Se Heath, ALPICTURES OF 2 HAIL (MEASURED WITH A RULER) JUST EAST OF ANDALUSIA. PICTURES VIA SOCIAL MEDIA.
Jul 22, 1:20 PM CDTHAIL 42 Nnw Sanford, ALPICTURE ON SOCIAL MEDIA OF 4 INCH+ HAILSTONE NEAR SANFORD, AL. TIME ESTIMATED FROM RADAR.
Jul 22, 1:30 PM CDTHAIL 2.5Babbie, ALPICTURES ON SOCIAL MEDIA OF GOLF BALL TO TENNIS BALL SIZE HAIL IN THE BABBIE COMMUNITY.
Jul 22, 1:36 PM CDTHAIL 1.251 Nw Opp, ALHALF DOLLAR SIZE HAIL REPORTED IN OPP. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 22, 11:57 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.8 hours before the alert went out and 198 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 12:00Z on 2018-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 342 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, Birmingham, AL at 12:00Z on 2018-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 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
342 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1340 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

343 
WUUS54 KMOB 221747
SVRMOB
ALC013-035-039-041-221845-
/O.NEW.KMOB.SV.W.0079.180722T1747Z-180722T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1247 PM CDT SUN JUL 22 2018

The National Weather Service in Mobile has issued a

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

* Until 145 PM CDT.

* At 1246 PM CDT, a severe thunderstorm was located 5 miles east of 
  McKenzie, or 16 miles northwest of Andalusia, now moving east 
  southeast at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Opp, Red Level, Dozier, Heath and Gantt. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3123 8627 3146 8673 3162 8666 3152 8619
      3150 8619
TIME...MOT...LOC 1746Z 292DEG 23KT 3151 8662 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
102 
WWUS54 KMOB 221828
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
128 PM CDT SUN JUL 22 2018

ALC013-035-039-041-221836-
/O.CAN.KMOB.SV.W.0079.000000T0000Z-180722T1845Z/
Butler AL-Crenshaw AL-Conecuh AL-Covington AL-
128 PM CDT SUN JUL 22 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUTLER...
SOUTHWESTERN CRENSHAW...EAST CENTRAL CONECUH AND NORTHERN COVINGTON
COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. Another severe 
thunderstorm has been issued.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
south central Alabama.

LAT...LON 3123 8627 3146 8673 3162 8666 3152 8619
      3150 8619
TIME...MOT...LOC 1824Z 292DEG 23KT 3141 8634 

$$

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 21, 11:40 PM CDTSevere Thunderstorm WarningMOBButler, Covington, Crenshaw35 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, 12:54 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.