Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 1, NWS Huntsville, AL

March 1, 2017Lauderdale County, Limestone County, Alabama

NWS Huntsville, AL issued this tornado warning at Mar 1, 2017, 12:10 PM CST for Lauderdale County, Limestone County, Alabama. It was in force for 35 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 1, 2017, 12:10 PM CST (18:10 UTC)
Expired
Mar 1, 2017, 12:45 PM CST
In force
35 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.75 in

Counties Lauderdale County, AL, Limestone County, AL

The radar

The Northeast Alabama radar (KHTX), 106 km from the middle of the area, began a volume at 18:12 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 1, 12:19 PM CSTHAIL 1.752 W Rogersville, AL.
Mar 1, 12:25 PM CSTHAIL 1.757 Ese Anderson, AL.

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 1, 11:48 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.2 hours before the alert went out and 157 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, Nashville Metro, TN at 12:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 694 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, Nashville Metro, TN at 12:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 361 square meters per square second.1939587897117136156Sfc1 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
694 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
842 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
361 m²/s²
0-3 km storm-relative helicity
344 m²/s²
Significant tornado parameter
1.6
Supercell composite
9.1

Open this sounding in Storm Lab

The text

As transmitted.

945 
WFUS54 KHUN 011810
TORHUN
ALC077-083-011845-
/O.NEW.KHUN.TO.W.0001.170301T1810Z-170301T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Huntsville AL
1210 PM CST WED MAR 1 2017

The National Weather Service in Huntsville Alabama has issued a

* Tornado Warning for...
  East central Lauderdale County in northwestern Alabama...
  Northwestern Limestone County in north central Alabama...

* Until 1245 PM CST
    
* At 1210 PM CST, a severe thunderstorm capable of producing a
  tornado was located near Rogersville, or 15 miles east of Florence,
  moving east at 60 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. 

* This dangerous storm will be near...
  Rogersville around 1215 PM CST. 
  Athens around 1235 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Cartwright, Coxey, Oliver, Mt Rozell and Anderson.

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 3477 8690 3476 8731 3478 8733 3480 8736
      3480 8743 3482 8749 3491 8751 3496 8695
TIME...MOT...LOC 1810Z 265DEG 51KT 3483 8740 

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

$$

15
2 follow-up statements
394 
WWUS54 KHUN 011823
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
1223 PM CST WED MAR 1 2017

ALC077-083-011845-
/O.CON.KHUN.TO.W.0001.000000T0000Z-170301T1845Z/
Lauderdale AL-Limestone AL-
1223 PM CST WED MAR 1 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CST FOR EAST
CENTRAL LAUDERDALE AND NORTHWESTERN LIMESTONE COUNTIES...
    
At 1223 PM CST, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of Rogersville, or 12 miles northwest
of Athens, moving east at 60 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. 

This dangerous storm will be near...
  Athens around 1235 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Cartwright, Oliver, Mt Rozell, Anderson and Cairo.

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 3481 8691 3480 8728 3485 8729 3493 8731
      3496 8695
TIME...MOT...LOC 1823Z 261DEG 51KT 3488 8717 

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

$$

KDW
719 
WWUS54 KHUN 011836
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
1236 PM CST WED MAR 1 2017

ALC077-083-011845-
/O.EXP.KHUN.TO.W.0001.000000T0000Z-170301T1845Z/
Lauderdale AL-Limestone AL-
1236 PM CST WED MAR 1 2017

...THE TORNADO WARNING FOR EAST CENTRAL LAUDERDALE AND NORTHWESTERN
LIMESTONE COUNTIES WILL EXPIRE AT 1245 PM CST...
                
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.  However small hail
and gusty winds are still possible with this thunderstorm.

A tornado watch remains in effect until 600 PM CST for north central
and northwestern Alabama...and Middle Tennessee.

LAT...LON 3481 8691 3480 8728 3485 8729 3493 8731
      3496 8695
TIME...MOT...LOC 1835Z 265DEG 51KT 3489 8696 

$$

KDW

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 1, 10:28 AM CSTSpecial Weather StatementHUNLauderdale32 min
Mar 1, 10:58 AM CSTSevere Thunderstorm WarningHUNLauderdale32 min
Mar 1, 11:31 AM CSTSpecial Weather StatementHUNColbert, Lauderdale29 min
Mar 1, 11:44 AM CSTSevere Thunderstorm WarningHUNLauderdale, Limestone31 min
Mar 1, 11:58 AM CSTSevere Thunderstorm WarningHUNColbert, Lauderdale, Lawrence, Limestone32 min
Mar 1, 12:32 PM CSTSevere Thunderstorm WarningHUNColbert, Lawrence28 min
Mar 1, 12:38 PM CSTSpecial Weather StatementHUNLimestone37 min
Mar 1, 12:44 PM CSTSevere Thunderstorm WarningHUNLimestone, Madison31 min
Mar 1, 12:53 PM CSTSevere Thunderstorm WarningHUNLawrence, Limestone, Morgan37 min
Mar 1, 1:10 PM CSTSevere Thunderstorm WarningHUNJackson, Madison35 min
Mar 1, 1:19 PM CSTSevere Thunderstorm WarningHUNMadison26 min
Mar 1, 1:19 PM CSTSevere Thunderstorm WarningHUNFranklin, Lawrence26 min
Mar 1, 1:39 PM CSTSevere Thunderstorm WarningHUNCullman, Morgan36 min
Mar 1, 1:43 PM CSTSevere Thunderstorm WarningHUNJackson32 min
Mar 1, 2:10 PM CSTSevere Thunderstorm WarningHUNMarshall, Morgan35 min
Mar 1, 2:15 PM CSTAreal Flood WarningHUNMorgan2 hr
Mar 1, 2:19 PM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson26 min
Mar 1, 2:36 PM CSTSpecial Weather StatementHUNCullman24 min
Mar 1, 2:40 PM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson, Marshall50 min
Mar 1, 2:54 PM CSTSevere Thunderstorm WarningHUNCullman, Marshall36 min
Mar 1, 3:05 PM CSTSevere Thunderstorm WarningHUNCullman25 min

Nearby

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