Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 14, NWS Mobile, AL

July 22, 2018Clarke County, Alabama

NWS Mobile, AL issued this tornado warning at Jul 22, 2018, 2:29 PM CDT for Clarke County, Alabama. It was in force for 23 min. 1 report 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, 2:29 PM CDT (19:29 UTC)
Expired
Jul 22, 2018, 2:52 PM CDT
In force
23 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Clarke County, AL

The radar

The Mobile radar (KMOB), 118 km from the middle of the area, began a volume at 19:32 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, 2:40 PM CDTHAIL 13 S Grove Hill, ALQUARTER SIZE HAIL REPORTED BY EMA.

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, 7.5 hours before the alert went out and 193 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.

488 
WFUS54 KMOB 221929
TORMOB
ALC025-222015-
/O.NEW.KMOB.TO.W.0014.180722T1929Z-180722T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
229 PM CDT SUN JUL 22 2018

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Central Clarke County in southwestern Alabama...

* Until 315 PM CDT.
    
* At 229 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Grove Hill, moving southeast at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Whatley around 245 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3172 8790 3177 8785 3165 8762 3153 8777
TIME...MOT...LOC 1929Z 319DEG 29KT 3170 8784 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
2 follow-up statements
138 
WWUS54 KMOB 221943
SVSMOB

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

ALC025-222015-
/O.CON.KMOB.TO.W.0014.000000T0000Z-180722T2015Z/
Clarke AL-
243 PM CDT SUN JUL 22 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR CENTRAL
CLARKE COUNTY...
    
At 243 PM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles southwest of Whatley, or 7 miles south of Grove
Hill, moving southeast at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
central Clarke County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3169 8781 3171 8774 3169 8771 3161 8766
      3153 8777 3165 8785
TIME...MOT...LOC 1943Z 335DEG 27KT 3161 8778 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
337 
WWUS54 KMOB 221952
SVSMOB

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

ALC025-222001-
/O.CAN.KMOB.TO.W.0014.000000T0000Z-180722T2015Z/
Clarke AL-
252 PM CDT SUN JUL 22 2018

...THE TORNADO WARNING FOR CENTRAL CLARKE COUNTY IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

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

LAT...LON 3169 8781 3171 8774 3169 8771 3161 8766
      3153 8777 3165 8785
TIME...MOT...LOC 1950Z 319DEG 29KT 3156 8773 

$$

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, 12:47 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, 3:18 PM CDTSpecial Marine WarningMOB57 min
Jul 22, 6:29 PM CDTSpecial Marine WarningMOB61 min

Nearby

Tornado Warnings in Alabama, 2018Every tornado warning in 2018Tornadoes 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.