Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 23, NWS Birmingham, AL

April 27, 2017Bullock County, Montgomery County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2017, 9:09 AM CDT for Bullock County, Montgomery County, Alabama. It was in force for 20 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: Apr 27, 2017, 9:09 AM CDT (14:09 UTC)
Expired: Apr 27, 2017, 9:29 AM CDT
In force: 20 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Bullock County, AL, Montgomery County, AL

The radar

The Maxwell AFB radar (KMXX), 36 km from the middle of the area, began a volume at 14:07 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

Time	Report	Where	Remark
Apr 27, 9:13 AM CDT	TORNADO	4 Wsw Mitchell, AL	DAMAGE PHOTO INDICATING NARROW AREA OF CONVERGENT TREE DAMAGE ON STOWERS RD ASSOCIATED WITH DEBRIS SIGNATURE FROM KMXX.

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, 2.2 hours before the alert went out and 130 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: 277 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

684 
WFUS54 KBMX 271409
TORBMX
ALC011-101-271445-
/O.NEW.KBMX.TO.W.0023.170427T1409Z-170427T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
909 AM CDT THU APR 27 2017

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Northwestern Bullock County in southeastern Alabama...
  East central Montgomery County in south central Alabama...

* Until 945 AM CDT
    
* At 908 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Pike Road, or 11 miles northeast of Meadville,
  moving northeast at 30 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...
  Mitchell, Cecil and Carters Hill. 

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 3214 8613 3217 8614 3234 8599 3233 8597
      3229 8594 3227 8592 3228 8590 3229 8590
      3227 8588 3225 8588 3223 8586 3223 8582
      3221 8579
TIME...MOT...LOC 1408Z 237DEG 25KT 3221 8604 

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

$$

61

4 follow-up statements

498 
WWUS54 KBMX 271413
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
913 AM CDT THU APR 27 2017

ALC011-101-271445-
/O.CON.KBMX.TO.W.0023.000000T0000Z-170427T1445Z/
Bullock AL-Montgomery AL-
913 AM CDT THU APR 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR
NORTHWESTERN BULLOCK AND EAST CENTRAL MONTGOMERY COUNTIES...
    
At 912 AM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southeast of Pike Road, or 13 miles northeast of
Meadville, moving northeast at 30 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...
Mitchell.

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 3221 8602 3222 8603 3232 8596 3229 8594
      3227 8592 3228 8590 3229 8590 3227 8588
      3225 8588
TIME...MOT...LOC 1412Z 237DEG 26KT 3223 8600 

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

$$

61

762 
WWUS54 KBMX 271417
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
917 AM CDT THU APR 27 2017

ALC011-101-271445-
/O.CON.KBMX.TO.W.0023.000000T0000Z-170427T1445Z/
Bullock AL-Montgomery AL-
917 AM CDT THU APR 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR
NORTHWESTERN BULLOCK AND EASTERN MONTGOMERY COUNTIES...
        
At 916 AM CDT, a confirmed tornado was located 7 miles east of Pike
Road, or 13 miles south of Milstead, moving northeast at 30 mph.

HAZARD...Damaging tornado and quarter size hail. 

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...
Mitchell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3223 8599 3224 8600 3231 8596 3227 8592
      3228 8590 3229 8590 3226 8589
TIME...MOT...LOC 1416Z 226DEG 26KT 3225 8598 

TORNADO...OBSERVED
HAIL...1.00IN

$$

61

264 
WWUS54 KBMX 271425
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
925 AM CDT THU APR 27 2017

ALC011-101-271445-
/O.CON.KBMX.TO.W.0023.000000T0000Z-170427T1445Z/
Bullock AL-Montgomery AL-
925 AM CDT THU APR 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR
NORTHWESTERN BULLOCK AND EASTERN MONTGOMERY COUNTIES...
    
At 925 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Hardaway, or 11 miles south of Milstead, moving
northeast at 30 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. 

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Bullock and eastern Montgomery 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 3225 8595 3226 8595 3228 8594 3228 8593
      3227 8592 3228 8591 3227 8591 3226 8592
TIME...MOT...LOC 1425Z 238DEG 25KT 3227 8592 

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

$$

61

930 
WWUS54 KBMX 271429
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
929 AM CDT THU APR 27 2017

ALC011-101-271438-
/O.CAN.KBMX.TO.W.0023.000000T0000Z-170427T1445Z/
Bullock AL-Montgomery AL-
929 AM CDT THU APR 27 2017

...THE TORNADO WARNING FOR NORTHWESTERN BULLOCK AND EASTERN
MONTGOMERY 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.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Birmingham.

LAT...LON 3225 8595 3226 8595 3228 8594 3228 8593
      3227 8592 3228 8591 3227 8591 3226 8592
TIME...MOT...LOC 1426Z 237DEG 25KT 3228 8589 

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 12:06 AM CDT	Severe Thunderstorm Warning	BMX	Sumter	39 min
Apr 27, 12:07 AM CDT	Tornado Warning	BMX	Pickens	25 min
Apr 27, 12:33 AM CDT	Severe Thunderstorm Warning	BMX	Greene	42 min
Apr 27, 12:56 AM CDT	Severe Thunderstorm Warning	BMX	Sumter	49 min
Apr 27, 6:13 AM CDT	Tornado Warning	BMX	Lowndes	13 min
Apr 27, 8:41 AM CDT	Special Weather Statement	BMX	Tallapoosa	34 min
Apr 27, 11:21 AM CDT	Tornado Warning	BMX	Pike	24 min
Apr 27, 11:31 AM CDT	Tornado Warning	BMX	Lee, Russell	14 min
Apr 27, 11:40 AM CDT	Tornado Warning Tornado observed	BMX	Bullock	36 min
Apr 27, 11:58 AM CDT	Tornado Warning	BMX	Russell	27 min
Apr 27, 12:04 PM CDT	Tornado Warning	BMX	Barbour, Bullock	41 min

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; radar from the NEXRAD Level II archive.