Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 19, NWS Birmingham, AL

April 5, 2017Chambers County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 5, 2017, 8:35 PM CDT for Chambers County, Alabama. It was in force for 25 min. 4 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 5, 2017, 8:35 PM CDT (01:35 UTC)
Expired: Apr 5, 2017, 9:00 PM CDT
In force: 25 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Chambers County, AL

What was reported inside it

Time	Report	Where	Remark
Apr 5, 8:39 PM CDT	TORNADO	Penton, AL	SEVERAL TREES WERE UPROOTED ALONG THE PATH. ONE BARN SUFFERED MINOR DAMAGE, ONE BARN SUFFERED MAJOR DAMAGE AND ONE SMALL FIRE STATION HAD MAJOR DAMAGE.
Apr 5, 8:40 PM CDT	TSTM WND DMG	3 N Trammel Crossroads, AL	RADAR DETECTED TDS IN NORTHWEST CHAMBERS COUNTY.
Apr 5, 8:41 PM CDT	TSTM WND DMG	1 Wsw Penton, AL	SEVERAL TREES BLOWN DOWN. POSSIBLE TORNADO.
Apr 5, 8:42 PM CDT	TSTM WND DMG	Penton, AL	SEVERAL TREES BLOWN DOWN. POSSIBLE TORNADO.

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.

Issued	Product	Office	Lasted
Apr 5, 1:50 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.6 hours before the alert went out and 93 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: 723 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 594 m above ground
0-6 km bulk shear: 93 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.8

Open this sounding in Storm Lab

The text

As transmitted.

739 
WFUS54 KBMX 060135
TORBMX
ALC017-060200-
/O.NEW.KBMX.TO.W.0019.170406T0135Z-170406T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
835 PM CDT WED APR 5 2017

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Northwestern Chambers County in east central Alabama...

* Until 900 PM CDT
    
* At 835 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Trammel Crossroads, or 12 miles northwest of
  Lafayette, moving northeast at 50 mph.

  HAZARD...Tornado and quarter size hail. 

  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...
  Stroud, Penton and Trammel Crossroads. 

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 3303 8531 3295 8559 3303 8559 3311 8536
      3310 8536
TIME...MOT...LOC 0135Z 244DEG 44KT 3300 8558 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

89^GSatterwhite

1 follow-up statement

164 
WWUS54 KBMX 060147
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
847 PM CDT WED APR 5 2017

ALC017-060200-
/O.CON.KBMX.TO.W.0019.000000T0000Z-170406T0200Z/
Chambers AL-
847 PM CDT WED APR 5 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
NORTHWESTERN CHAMBERS COUNTY...
        
At 847 PM CDT, a confirmed tornado was located over Penton, or near
Stroud, moving northeast at 50 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. 

Locations impacted include...
Stroud and Penton. 

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 3298 8548 3305 8550 3311 8536 3310 8536
      3303 8531
TIME...MOT...LOC 0147Z 246DEG 42KT 3303 8543 

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

$$

89^GSatterwhite

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 7:04 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne	26 min
Apr 5, 7:15 PM CDT	Tornado Warning	BMX	Cleburne	15 min
Apr 5, 7:36 PM CDT	Severe Thunderstorm Warning	BMX	Coosa, Elmore	27 min
Apr 5, 8:29 PM CDT	Tornado Warning	BMX	Tallapoosa	9 min
Apr 5, 8:47 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Macon, Montgomery, Tallapoosa	43 min
Apr 5, 8:57 PM CDT	Tornado Warning	BMX	Chambers	18 min
Apr 5, 9:05 PM CDT	River Flood Warning	BMX	Chambers, Elmore, Macon, Randolph, Tallapoosa	29 hr
Apr 5, 9:38 PM CDT	Severe Thunderstorm Warning	BMX	Lee	37 min
Apr 6, 4:45 AM CDT	River Flood Warning	BMX	Sumter	60 hr

Nearby

Tornado Warnings in Alabama, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.