Alert archive / Alabama / Tornado Warnings in 2019

Tornado Warning 13, NWS Huntsville, AL

April 8, 2019Jackson County, Alabama

NWS Huntsville, AL issued this tornado warning at Apr 8, 2019, 6:49 AM CDT for Jackson County, Alabama. It was in force for 26 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 8, 2019, 6:49 AM CDT (11:49 UTC)
Expired
Apr 8, 2019, 7:15 AM CDT
In force
26 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Tornado
Radar indicated

County Jackson County, AL

The radar

The Northeast Alabama radar (KHTX), 40 km from the middle of the area, began a volume at 11:50 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, 11.8 hours before the alert went out and 170 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 00:00Z on 2019-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 581 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 00:00Z on 2019-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.193958Sfc1 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
581 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1416 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted.

254 
WFUS54 KHUN 081149
TORHUN
ALC071-081215-
/O.NEW.KHUN.TO.W.0013.190408T1149Z-190408T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Huntsville AL
649 AM CDT MON APR 8 2019

The National Weather Service in Huntsville Alabama has issued a

* Tornado Warning for...
  Central Jackson County in northeastern Alabama...

* Until 715 AM CDT.
    
* At 649 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Section, or 9 miles south of Scottsboro, moving
  northeast at 40 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.

* Locations impacted include...
  Scottsboro, Stevenson, Hollywood, Powell, Section, Pisgah, Dutton,
  Langston, Martintown and Rosalie.

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 3457 8586 3453 8593 3449 8597 3446 8608
      3453 8611 3453 8613 3452 8614 3453 8614
      3453 8616 3454 8614 3455 8615 3491 8593
      3476 8567
TIME...MOT...LOC 1149Z 214DEG 33KT 3454 8606 

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

$$

Stumpf
2 follow-up statements
486 
WWUS54 KHUN 081203
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
703 AM CDT MON APR 8 2019

ALC071-081215-
/O.CON.KHUN.TO.W.0013.000000T0000Z-190408T1215Z/
Jackson AL-
703 AM CDT MON APR 8 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR CENTRAL
JACKSON COUNTY...
    
At 703 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Scottsboro, moving northeast at 40 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.

Locations impacted include...
Scottsboro, Stevenson, Hollywood, Powell, Section, Pisgah, Dutton,
Langston, Martintown and Rosalie.

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 3457 8586 3453 8593 3449 8597 3455 8606
      3463 8610 3491 8593 3476 8567
TIME...MOT...LOC 1203Z 214DEG 33KT 3465 8597 

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

$$

Stumpf
529 
WWUS54 KHUN 081210
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
710 AM CDT MON APR 8 2019

ALC071-081219-
/O.EXP.KHUN.TO.W.0013.000000T0000Z-190408T1215Z/
Jackson AL-
710 AM CDT MON APR 8 2019

...THE TORNADO WARNING FOR CENTRAL JACKSON COUNTY WILL EXPIRE AT 715
AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 3457 8586 3453 8593 3449 8597 3455 8606
      3463 8610 3491 8593 3476 8567
TIME...MOT...LOC 1209Z 214DEG 33KT 3469 8593 

$$

Stumpf

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 2:35 AM CDTSpecial Weather StatementHUNColbert, Cullman, Franklin, Lauderdale, Lawrence40 min
Apr 8, 3:28 AM CDTSpecial Weather StatementHUNCullman, Limestone, Madison, Marshall, Morgan47 min
Apr 8, 5:50 AM CDTSpecial Weather StatementHUNMarshall40 min
Apr 8, 6:03 AM CDTSevere Thunderstorm WarningHUNMarshall27 min
Apr 8, 6:22 AM CDTTornado Warning Tornado observedHUNDeKalb, Marshall23 min
Apr 8, 6:42 AM CDTSevere Thunderstorm WarningHUNDeKalb, Jackson, Marshall33 min

Nearby

Tornado Warnings in Alabama, 2019Every tornado warning in 2019Tornadoes in 2019

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.