Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 7, NWS Mobile, AL

April 22, 2018Crenshaw County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 22, 2018, 2:11 PM CDT for Crenshaw County, Alabama. It was in force for 19 min. 3 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
Apr 22, 2018, 2:11 PM CDT (19:11 UTC)
Expired
Apr 22, 2018, 2:30 PM CDT
In force
19 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Observed
Hail
0.75 in

County Crenshaw County, AL

The radar

The Maxwell AFB radar (KMXX), 81 km from the middle of the area, began a volume at 19:14 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
Apr 22, 2:11 PM CDTTORNADO3 Ne Saville, ALA TORNADO TOUCHED DOWN NEAR DANIEL MILL RD CAUSING MINOR TREE DAMAGE, THEN STRENGTHENED TO AN EF-1 BEFORE REACHING OLIVER MYERS RD. SEVERAL LARGE TREES WERE UPROOTED OR SNAPPED. THE TORNADO CAUSED MINOR TO MODERATE ROOF AND SIDING DAMAGE TO SEVERAL HOMES AROUN
Apr 22, 2:14 PM CDTTSTM WND DMG1 Se Highland Home, ALPICTURES OF TREES SNAPPED AND NUMEROUS LARGE BRANCHES DOWN NEAR A HOME IN THE AREA OF HIGHLAND HOME AND MAGNOLIA SPRINGS.
Apr 22, 2:14 PM CDTTSTM WND DMG1 Se Highland Home, ALPICTURES OF TREES SNAPPED AND NUMEROUS LARGE BRANCHES DOWN NEAR A HOME IN THE AREA OF HIGHLAND HOME AND MAGNOLIA SPRINGS.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.2 hours before the alert went out and 145 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 2018-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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 2018-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 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
29 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
562 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

352 
WFUS54 KMOB 221911
TORMOB
ALC041-221930-
/O.NEW.KMOB.TO.W.0007.180422T1911Z-180422T1930Z/

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

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  North central Crenshaw County in south central Alabama...

* Until 230 PM CDT.
    
* At 210 PM CDT, a tornado producing storm was located over Highland
  Home, or 14 miles southwest of Meadville, moving north at 25 mph.

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado.

  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 storm will be near...
  Highland Home around 215 PM CDT.
  Lapine around 220 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3185 8631 3188 8637 3205 8633 3205 8630
      3197 8630 3197 8620 3196 8620
TIME...MOT...LOC 1910Z 199DEG 22KT 3192 8632 

TORNADO...OBSERVED
HAIL...<.75IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 22, 12:14 PM CDTSpecial Weather StatementMOBClarke46 min
Apr 22, 12:26 PM CDTSpecial Weather StatementMOBMonroe19 min
Apr 22, 12:37 PM CDTSpecial Weather StatementMOBCovington38 min
Apr 22, 1:17 PM CDTSpecial Marine WarningMOB58 min
Apr 22, 1:26 PM CDTTornado WarningMOBEscambia34 min
Apr 22, 1:32 PM CDTSpecial Marine WarningMOB43 min
Apr 22, 1:43 PM CDTSpecial Weather StatementMOBCrenshaw47 min
Apr 22, 1:47 PM CDTTornado WarningMOBCrenshaw28 min
Apr 22, 1:53 PM CDTSevere Thunderstorm WarningMOBEscambia37 min
Apr 22, 1:57 PM CDTTornado WarningMOBEscambia33 min
Apr 22, 2:05 PM CDTSpecial Marine WarningMOB55 min
Apr 22, 2:07 PM CDTSpecial Marine WarningMOB53 min
Apr 22, 2:09 PM CDTTornado WarningMOBButler, Covington, Crenshaw23 min
Apr 22, 2:10 PM CDTSpecial Marine WarningMOB65 min
Apr 22, 2:29 PM CDTTornado WarningMOBConecuh, Covington, Escambia13 min
Apr 22, 2:50 PM CDTSpecial Marine WarningMOB55 min
Apr 22, 2:55 PM CDTSpecial Marine WarningMOB65 min
Apr 22, 3:02 PM CDTSpecial Marine WarningMOB58 min
Apr 22, 3:07 PM CDTSpecial Marine WarningMOB38 min
Apr 22, 3:25 PM CDTTornado WarningMOBBaldwin35 min
Apr 22, 3:44 PM CDTSpecial Marine WarningMOB61 min
Apr 22, 4:18 PM CDTSpecial Marine WarningMOB27 min
Apr 22, 4:59 PM CDTSpecial Weather StatementMOBChoctaw46 min
Apr 22, 5:08 PM CDTSpecial Weather StatementMOBEscambia37 min
Apr 22, 5:44 PM CDTSpecial Weather StatementMOBChoctaw46 min
Apr 22, 6:00 PM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke22 min
Apr 22, 6:46 PM CDTSpecial Weather StatementMOBWilcox29 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.