Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 8, NWS Mobile, AL

April 22, 2018Conecuh County, Covington County, Escambia County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 22, 2018, 2:29 PM CDT for Conecuh County, Covington County, Escambia County, Alabama. It was in force for 13 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: Apr 22, 2018, 2:29 PM CDT (19:29 UTC)
Expired: Apr 22, 2018, 2:42 PM CDT
In force: 13 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Conecuh County, AL, Covington County, AL, Escambia County, AL

The radar

The Eglin Afb radar (KEVX), 109 km from the middle of the area, began a volume at 19:33 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 12:00Z, 7.5 hours before the alert went out and 213 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: 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.

364 
WFUS54 KMOB 221929
TORMOB
ALC035-039-053-222015-
/O.NEW.KMOB.TO.W.0008.180422T1929Z-180422T2015Z/

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

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Northeastern Escambia County in south central Alabama...
  Southeastern Conecuh County in south central Alabama...
  West central Covington County in south central Alabama...

* Until 315 PM CDT.
    
* At 228 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 16 miles east of Castleberry, or 18 miles west of
  Andalusia, moving northeast at 25 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...
  River Falls around 305 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 3117 8675 3119 8681 3144 8675 3137 8651
TIME...MOT...LOC 1928Z 210DEG 22KT 3121 8677 

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

$$

1 follow-up statement

132 
WWUS54 KMOB 221942
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
242 PM CDT SUN APR 22 2018

ALC035-039-053-221952-
/O.CAN.KMOB.TO.W.0008.000000T0000Z-180422T2015Z/
Escambia AL-Conecuh AL-Covington AL-
242 PM CDT SUN APR 22 2018

...THE TORNADO WARNING FOR NORTHEASTERN ESCAMBIA...SOUTHEASTERN
CONECUH AND WEST CENTRAL COVINGTON COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3117 8675 3119 8681 3144 8675 3137 8651
TIME...MOT...LOC 1941Z 210DEG 22KT 3128 8672 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 12:14 PM CDT	Special Weather Statement	MOB	Clarke	46 min
Apr 22, 12:26 PM CDT	Special Weather Statement	MOB	Monroe	19 min
Apr 22, 12:37 PM CDT	Special Weather Statement	MOB	Covington	38 min
Apr 22, 1:17 PM CDT	Special Marine Warning	MOB		58 min
Apr 22, 1:26 PM CDT	Tornado Warning	MOB	Escambia	34 min
Apr 22, 1:32 PM CDT	Special Marine Warning	MOB		43 min
Apr 22, 1:43 PM CDT	Special Weather Statement	MOB	Crenshaw	47 min
Apr 22, 1:47 PM CDT	Tornado Warning	MOB	Crenshaw	28 min
Apr 22, 1:53 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	37 min
Apr 22, 1:57 PM CDT	Tornado Warning	MOB	Escambia	33 min
Apr 22, 2:05 PM CDT	Special Marine Warning	MOB		55 min
Apr 22, 2:07 PM CDT	Special Marine Warning	MOB		53 min
Apr 22, 2:09 PM CDT	Tornado Warning	MOB	Butler, Covington, Crenshaw	23 min
Apr 22, 2:10 PM CDT	Special Marine Warning	MOB		65 min
Apr 22, 2:11 PM CDT	Tornado Warning Tornado observed	MOB	Crenshaw	19 min
Apr 22, 2:50 PM CDT	Special Marine Warning	MOB		55 min
Apr 22, 2:55 PM CDT	Special Marine Warning	MOB		65 min
Apr 22, 3:02 PM CDT	Special Marine Warning	MOB		58 min
Apr 22, 3:07 PM CDT	Special Marine Warning	MOB		38 min
Apr 22, 3:25 PM CDT	Tornado Warning	MOB	Baldwin	35 min
Apr 22, 3:44 PM CDT	Special Marine Warning	MOB		61 min
Apr 22, 4:18 PM CDT	Special Marine Warning	MOB		27 min
Apr 22, 4:59 PM CDT	Special Weather Statement	MOB	Choctaw	46 min
Apr 22, 5:08 PM CDT	Special Weather Statement	MOB	Escambia	37 min
Apr 22, 5:44 PM CDT	Special Weather Statement	MOB	Choctaw	46 min
Apr 22, 6:00 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke	22 min
Apr 22, 6:46 PM CDT	Special Weather Statement	MOB	Wilcox	29 min

Nearby

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