Alert archive / Alabama / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 72, NWS Mobile, AL

July 21, 20184 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 21, 2018, 11:05 PM CDT for 4 counties in Alabama. It was in force for 40 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, 11:05 PM CDT (04:05 UTC)
Expired: Jul 21, 2018, 11:45 PM CDT
In force: 40 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.0 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), 124 km from the middle of the area, began a volume at 04:07 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, 4.1 hours before the alert went out and 181 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: 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.

265 
WUUS54 KMOB 220405
SVRMOB
ALC013-035-039-041-220445-
/O.NEW.KMOB.SV.W.0072.180722T0405Z-180722T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1105 PM CDT SAT JUL 21 2018

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southern Butler County in south central Alabama...
  Southwestern Crenshaw County in south central Alabama...
  Northeastern Conecuh County in south central Alabama...
  Northwestern Covington County in south central Alabama...

* Until 1145 PM CDT.

* At 1105 PM CDT, a severe thunderstorm was located 9 miles west of
  Georgiana, or 13 miles north of Evergreen, moving southeast at 30
  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...
  Georgiana, McKenzie, River Falls, Red Level, Heath and Gantt. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3157 8702 3174 8694 3157 8637 3132 8649
TIME...MOT...LOC 0405Z 294DEG 27KT 3163 8690 

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

05/RR

2 follow-up statements

100 
WWUS54 KMOB 220417
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1117 PM CDT SAT JUL 21 2018

ALC013-035-039-041-220445-
/O.CON.KMOB.SV.W.0072.000000T0000Z-180722T0445Z/
Butler AL-Crenshaw AL-Conecuh AL-Covington AL-
1117 PM CDT SAT JUL 21 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SOUTHERN BUTLER...SOUTHWESTERN CRENSHAW...EAST CENTRAL CONECUH
AND NORTHWESTERN COVINGTON COUNTIES...

At 1117 PM CDT, a severe thunderstorm was located 4 miles southwest
of Georgiana, or 14 miles northeast of Evergreen, moving southeast at
30 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...
Georgiana, McKenzie, River Falls, Red Level, Heath and Gantt. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3152 8691 3170 8683 3157 8637 3132 8649
TIME...MOT...LOC 0417Z 294DEG 27KT 3159 8680 

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

05/RR

076 
WWUS54 KMOB 220427
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1127 PM CDT SAT JUL 21 2018

ALC013-035-039-041-220445-
/O.CON.KMOB.SV.W.0072.000000T0000Z-180722T0445Z/
Butler AL-Crenshaw AL-Conecuh AL-Covington AL-
1127 PM CDT SAT JUL 21 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SOUTHEASTERN BUTLER...SOUTHWESTERN CRENSHAW...EAST CENTRAL
CONECUH AND NORTHWESTERN COVINGTON COUNTIES...

At 1127 PM CDT, a severe thunderstorm was located 4 miles east of
McKenzie, or 17 miles northwest of Andalusia, moving southeast at 45
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...
McKenzie, River Falls, Red Level, Heath and Gantt. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mobile.

&&

LAT...LON 3148 8682 3166 8671 3157 8637 3132 8649
TIME...MOT...LOC 0427Z 295DEG 41KT 3153 8664 

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
Jul 21, 10:08 PM CDT	Special Weather Statement	MOB	Monroe	67 min
Jul 21, 10:18 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe, Wilcox	57 min
Jul 21, 10:47 PM CDT	Special Weather Statement	MOB	Conecuh	28 min
Jul 21, 11:40 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Covington, Crenshaw	35 min
Jul 22, 2:25 AM CDT	Special Weather Statement	MOB	Butler, Covington	65 min
Jul 22, 3:22 AM CDT	Rip Current Statement	MOB	Baldwin, Mobile	24 hr
Jul 22, 10:50 AM CDT	Special Weather Statement	MOB	Choctaw, Wilcox	40 min
Jul 22, 11:20 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	14 min
Jul 22, 11:33 AM CDT	Special Weather Statement	MOB	Choctaw, Clarke, Wilcox	42 min
Jul 22, 11:40 AM CDT	Severe Thunderstorm Warning	MOB	Clarke, Wilcox	65 min
Jul 22, 12:06 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	54 min
Jul 22, 12:33 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	23 min
Jul 22, 12:35 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington	15 min
Jul 22, 12:47 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw	41 min
Jul 22, 12:54 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe	36 min
Jul 22, 1:07 PM CDT	Special Weather Statement	MOB	Crenshaw	38 min
Jul 22, 1:13 PM CDT	Special Weather Statement	MOB	Monroe	62 min
Jul 22, 1:18 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Escambia, Monroe	18 min
Jul 22, 1:21 PM CDT	Severe Thunderstorm Warning	MOB	Covington	39 min
Jul 22, 1:25 PM CDT	Special Weather Statement	MOB	Butler, Crenshaw	80 min
Jul 22, 2:02 PM CDT	Severe Thunderstorm Warning	MOB	Covington	58 min
Jul 22, 2:17 PM CDT	Special Weather Statement	MOB	Clarke	43 min
Jul 22, 2:27 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe	37 min
Jul 22, 2:29 PM CDT	Tornado Warning	MOB	Clarke	23 min
Jul 22, 3:18 PM CDT	Special Marine Warning	MOB		57 min
Jul 22, 6:29 PM CDT	Special Marine Warning	MOB		61 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.