Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 22, NWS Mobile, AL

November 1, 2018Choctaw County, Clarke County, Alabama

NWS Mobile, AL issued this tornado warning at Nov 1, 2018, 7:02 AM CDT for Choctaw County, Clarke County, Alabama. It was in force for 31 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
Nov 1, 2018, 7:02 AM CDT (12:02 UTC)
Expired
Nov 1, 2018, 7:33 AM CDT
In force
31 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Choctaw County, AL, Clarke County, AL

The radar

The Mobile radar (KMOB), 137 km from the middle of the area, began a volume at 12:06 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
Nov 1, 7:05 AM CDTTSTM WND DMGGilbertown, ALTREES ON POWER LINES WITH DEBRIS IN THE ROAD BETWEEN THE GILBERTOWN AND SILAS COMMUNITIES.

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
Nov 1, 5:27 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 0.0 hours before the alert went out and 186 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 2018-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 2018-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 367 square meters per square second.1939587897Sfc1 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
13 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
659 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
379 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

833 
WFUS54 KMOB 011202
TORMOB
ALC023-025-011245-
/O.NEW.KMOB.TO.W.0022.181101T1202Z-181101T1245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
702 AM CDT THU NOV 1 2018

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Southwestern Choctaw County in southwestern Alabama...
  Northwestern Clarke County in southwestern Alabama...

* Until 745 AM CDT.
    
* At 702 AM CDT, a severe thunderstorm capable of producing a tornado
  was located over Silas, or 20 miles south of Butler, moving
  northeast at 45 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
  southwestern Choctaw and northwestern Clarke Counties.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest 
floor of a building.A Tornado Watch also remains in effect until 100 
PM CDT for southwestern Alabama.

&&

LAT...LON 3199 8807 3199 8780 3182 8770 3171 8836
      3184 8842 3200 8809
TIME...MOT...LOC 1202Z 244DEG 41KT 3180 8830 

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

$$
2 follow-up statements
685 
WWUS54 KMOB 011218 RRA
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
718 AM CDT THU NOV 1 2018

ALC023-025-011245-
/O.CON.KMOB.TO.W.0022.000000T0000Z-181101T1245Z/
Choctaw AL-Clarke AL-
718 AM CDT THU NOV 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 AM CDT FOR SOUTH
CENTRAL CHOCTAW AND NORTHWESTERN CLARKE COUNTIES...
    
At 717 AM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles east of Toxey, or 12 miles south of Butler,
moving northeast 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 tornadic thunderstorm will remain over mainly rural areas of
south central Choctaw and northwestern Clarke Counties.

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 3199 8807 3199 8780 3185 8772 3183 8824
      3191 8827 3200 8809
TIME...MOT...LOC 1217Z 233DEG 32KT 3190 8818 

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

$$
075 
WWUS54 KMOB 011233
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
733 AM CDT THU NOV 1 2018

ALC023-025-011242-
/O.CAN.KMOB.TO.W.0022.000000T0000Z-181101T1245Z/
Choctaw AL-Clarke AL-
733 AM CDT THU NOV 1 2018

...THE TORNADO WARNING FOR SOUTH CENTRAL CHOCTAW AND NORTHWESTERN
CLARKE COUNTIES IS CANCELLED...
    
The circulation in the tornadic thunderstorm which prompted the 
warning has weakened. Therefore, the warning has been cancelled.

A Severe Thunderstorm Warning remains in effect until 800 AM CDT. 

A Tornado Watch remains in effect until 100 PM CDT for southwestern
Alabama.

LAT...LON 3199 8807 3199 8780 3185 8772 3183 8824
      3191 8827 3200 8809
TIME...MOT...LOC 1230Z 244DEG 41KT 3198 8800 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 1, 6:19 AM CDTSevere Thunderstorm WarningMOBMobile, Washington41 min
Nov 1, 6:29 AM CDTTornado WarningMOBWashington46 min
Nov 1, 6:33 AM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington42 min
Nov 1, 6:46 AM CDTSpecial Marine WarningMOB89 min
Nov 1, 6:50 AM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Mobile, Washington40 min
Nov 1, 7:03 AM CDTTornado WarningMOBBaldwin, Mobile27 min
Nov 1, 7:13 AM CDTAreal Flood AdvisoryMOBMobile3 hr
Nov 1, 7:15 AM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Monroe, Washington45 min
Nov 1, 7:25 AM CDTTornado WarningMOBBaldwin35 min
Nov 1, 7:30 AM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Escambia, Mobile, Monroe45 min
Nov 1, 8:00 AM CDTSevere Thunderstorm WarningMOBClarke, Conecuh, Monroe, Wilcox45 min
Nov 1, 8:03 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Nov 1, 8:03 AM CDTSevere Thunderstorm WarningMOBEscambia42 min
Nov 1, 8:07 AM CDTSevere Thunderstorm WarningMOBBaldwin38 min
Nov 1, 8:11 AM CDTSpecial Marine WarningMOB94 min
Nov 1, 8:39 AM CDTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia51 min
Nov 1, 8:43 AM CDTSpecial Weather StatementMOBButler, Conecuh47 min
Nov 1, 9:02 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Nov 1, 9:14 AM CDTSpecial Marine WarningMOB91 min
Nov 1, 9:20 AM CDTSevere Thunderstorm WarningMOBCovington, Crenshaw40 min
Nov 1, 9:34 AM CDTSpecial Weather StatementMOBCrenshaw41 min
Nov 1, 9:43 AM CDTSpecial Marine WarningMOB92 min
Nov 1, 9:55 AM CDTSevere Thunderstorm WarningMOBCovington, Crenshaw35 min
Nov 1, 9:58 AM CDTSpecial Weather StatementMOBCovington47 min
Nov 1, 10:42 AM CDTSpecial Marine WarningMOB93 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.