Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 2, NWS Birmingham, AL

March 19, 2018Etowah County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 19, 2018, 7:29 PM CDT for Etowah County, Alabama. It was in force for 61 min. 2 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
Mar 19, 2018, 7:29 PM CDT (00:29 UTC)
Expired
Mar 19, 2018, 8:30 PM CDT
In force
61 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.75 in

County Etowah County, AL

The radar

The Northeast Alabama radar (KHTX), 89 km from the middle of the area, began a volume at 00:28 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
Mar 19, 7:39 PM CDTTSTM WND DMGMountainboro, ALTREES DOWN IN MOUNTAINBORO. ALSO POWERLINES DOWN ON LEATH GAP ROAD.
Mar 19, 8:02 PM CDTTSTM WND DMG3 E Sardis City, ALTREES WERE BLOWN DOWN ALONG LEATH GAP ROAD.

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.

IssuedProductOfficeLasted
Mar 19, 3:28 PM CDTTornado Watch PDSSPC9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.5 hours before the alert went out and 132 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 2018-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1154 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 2018-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 334 square meters per square second.1939587897Sfc1 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
1154 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
1046 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
334 m²/s²
0-3 km storm-relative helicity
409 m²/s²
Significant tornado parameter
2.6
Supercell composite
17.4

Open this sounding in Storm Lab

The text

As transmitted.

486 
WFUS54 KBMX 200029
TORBMX
ALC055-200130-
/O.NEW.KBMX.TO.W.0002.180320T0029Z-180320T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
729 PM CDT MON MAR 19 2018

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Northern Etowah County in northeastern Alabama...

* Until 830 PM CDT
    
* At 728 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Albertville, moving east at 40 mph.

  HAZARD...Tornado and golf ball 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...
  Sardis City, Reece City, Tabor Road, Black Creek, Wilsonia, Crudup,
  Mountainboro and Keener.

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 3411 8584 3413 8580 3412 8579 3410 8580
      3405 8577 3413 8626 3418 8619 3419 8611
      3420 8610 3420 8584
TIME...MOT...LOC 0028Z 278DEG 35KT 3420 8628 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

87/GRANTHAM
3 follow-up statements
468 
WWUS54 KBMX 200040
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
740 PM CDT MON MAR 19 2018

ALC055-200130-
/O.CON.KBMX.TO.W.0002.000000T0000Z-180320T0130Z/
Etowah AL-
740 PM CDT MON MAR 19 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR NORTHERN
ETOWAH COUNTY...
    
At 740 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Sardis City, or over Boaz, moving east at 40 mph.

HAZARD...Tornado and golf ball 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...
Sardis City, Reece City, Tabor Road, Black Creek, Wilsonia, Crudup,
Mountainboro and Keener.

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 3411 8584 3413 8580 3412 8579 3410 8580
      3405 8577 3413 8626 3418 8619 3419 8611
      3420 8610 3420 8584
TIME...MOT...LOC 0040Z 278DEG 35KT 3418 8614 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

87/GRANTHAM
482 
WWUS54 KBMX 200055
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
755 PM CDT MON MAR 19 2018

ALC055-200130-
/O.CON.KBMX.TO.W.0002.000000T0000Z-180320T0130Z/
Etowah AL-
755 PM CDT MON MAR 19 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
NORTHEASTERN ETOWAH COUNTY...
    
At 755 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Tabor Road, or 10 miles north of Gadsden, moving
east at 40 mph.

HAZARD...Tornado and golf ball 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...
Boaz, Sardis City, Reece City, Tabor Road, Black Creek, Wilsonia,
Crudup, Mountainboro and Keener.

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 3412 8616 3419 8614 3419 8611 3420 8610
      3420 8584 3411 8584 3413 8580 3412 8579
      3410 8580 3405 8577 3410 8606
TIME...MOT...LOC 0055Z 278DEG 35KT 3416 8596 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

87/GRANTHAM
123 
WWUS54 KBMX 200121
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
821 PM CDT MON MAR 19 2018

ALC055-200131-
/O.EXP.KBMX.TO.W.0002.000000T0000Z-180320T0130Z/
Etowah AL-
821 PM CDT MON MAR 19 2018

...THE TORNADO WARNING FOR NORTHEASTERN ETOWAH COUNTY WILL EXPIRE AT
830 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1100 PM CDT for northeastern
Alabama.

LAT...LON 3412 8616 3419 8614 3419 8611 3420 8610
      3420 8584 3411 8584 3413 8580 3412 8579
      3410 8580 3405 8577 3410 8606
TIME...MOT...LOC 0121Z 278DEG 35KT 3413 8568 

$$

87/GRANTHAM

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 7:03 PM CDTSevere Thunderstorm WarningBMXBlount42 min
Mar 19, 7:18 PM CDTTornado WarningBMXBlount31 min
Mar 19, 7:41 PM CDTSevere Thunderstorm WarningBMXBlount, St. Clair34 min
Mar 19, 7:43 PM CDTSevere Thunderstorm WarningBMXEtowah62 min
Mar 19, 7:49 PM CDTSevere Thunderstorm WarningBMXBlount56 min
Mar 19, 8:02 PM CDTTornado WarningBMXCherokee58 min
Mar 19, 8:09 PM CDTSevere Thunderstorm WarningBMXCalhoun66 min
Mar 19, 8:15 PM CDTTornado WarningBMXCalhoun, Etowah45 min
Mar 19, 8:33 PM CDTTornado WarningBMXSt. Clair42 min
Mar 19, 8:38 PM CDTTornado WarningBMXCleburne46 min
Mar 19, 8:48 PM CDTTornado WarningBMXCalhoun42 min
Mar 19, 9:05 PM CDTTornado WarningBMXCalhoun21 min
Mar 19, 9:24 PM CDTAreal Flood AdvisoryBMXBlount, Calhoun, Etowah, St. Clair6 hr
Mar 19, 9:27 PM CDTSevere Thunderstorm WarningBMXCalhoun, Cleburne34 min
Mar 19, 9:46 PM CDTSevere Thunderstorm WarningBMXCalhoun, St. Clair, Talladega59 min
Mar 19, 10:20 PM CDTSevere Thunderstorm WarningBMXCleburne40 min
Mar 19, 11:01 PM CDTAreal Flood AdvisoryBMXCalhoun, Cleburne, Talladega3 hr
Mar 20, 3:06 AM CDTWind AdvisoryBMXAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more19 hr
Mar 20, 5:33 AM CDTDense Fog AdvisoryBMXBlount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 3 more3 hr

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.