Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 4, NWS Huntsville, AL

March 27, 2017Franklin County, Alabama

NWS Huntsville, AL issued this tornado warning at Mar 27, 2017, 4:08 PM CDT for Franklin County, Alabama. It was in force for 13 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 27, 2017, 4:08 PM CDT (21:08 UTC)
Expired
Mar 27, 2017, 4:21 PM CDT
In force
13 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Franklin County, AL

The radar

The Columbus AFB radar (KGWX), 59 km from the middle of the area, began a volume at 21:11 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 27, 4:26 PM CDTHAIL 14 Ssw Belgreen, ALQUARTER HAIL AT LITTLE BEAR CREEK RESERVOIR AT HWY 184 AND WILLIAM HOLLOW ROAD IN SPRUCE PINE.
Mar 27, 4:26 PM CDTHAIL 17 Nne Hodges, ALQUARTER HAIL AT LITTLE BEAR CREEK RESERVOIR AT HWY 184 AND WILLIAM HOLLOW ROAD IN SPRUCE PINE.

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 27, 1:54 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.1 hours before the alert went out and 174 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 12:00Z on 2017-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 293 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 12:00Z on 2017-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
293 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
734 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

156 
WFUS54 KHUN 272108
TORHUN
ALC059-272145-
/O.NEW.KHUN.TO.W.0004.170327T2108Z-170327T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Huntsville AL
408 PM CDT MON MAR 27 2017

The National Weather Service in Huntsville Alabama has issued a

* Tornado Warning for...
  Southwestern Franklin County in northwestern Alabama...

* Until 445 PM CDT
    
* At 407 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles southeast of Red Bay, moving east at 30 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. 

* This dangerous storm will be near...
  Belgreen around 440 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Hodges, Atwood, Duketon, Vina and Little Bear Creek Reservoir.

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 3439 8816 3451 8785 3432 8777 3431 8782
      3431 8805 3432 8815 3436 8817
TIME...MOT...LOC 2107Z 249DEG 24KT 3433 8807 

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

$$

15
1 follow-up statement
620 
WWUS54 KHUN 272121
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
421 PM CDT MON MAR 27 2017

ALC059-272131-
/O.CAN.KHUN.TO.W.0004.000000T0000Z-170327T2145Z/
Franklin AL-
421 PM CDT MON MAR 27 2017

...THE TORNADO WARNING FOR SOUTHWESTERN FRANKLIN COUNTY IS
CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  

A severe thunderstorm watch remains in effect until 900 PM CDT for
northwestern Alabama.

LAT...LON 3439 8816 3451 8785 3432 8777 3431 8782
      3431 8805 3432 8815 3436 8817
TIME...MOT...LOC 2120Z 249DEG 24KT 3436 8796 

$$

15

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 1:33 PM CDTSpecial Weather StatementHUNColbert27 min
Mar 27, 1:57 PM CDTSpecial Weather StatementHUNColbert, Franklin33 min
Mar 27, 2:03 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin, Lauderdale42 min
Mar 27, 2:04 PM CDTSpecial Weather StatementHUNMarshall26 min
Mar 27, 2:26 PM CDTSpecial Weather StatementHUNMarshall49 min
Mar 27, 2:31 PM CDTSevere Thunderstorm WarningHUNMarshall44 min
Mar 27, 2:37 PM CDTSevere Thunderstorm WarningHUNLauderdale23 min
Mar 27, 2:55 PM CDTSpecial Weather StatementHUNFranklin35 min
Mar 27, 3:02 PM CDTSpecial Weather StatementHUNLauderdale28 min
Mar 27, 3:04 PM CDTSpecial Weather StatementHUNJackson41 min
Mar 27, 3:04 PM CDTSevere Thunderstorm WarningHUNFranklin41 min
Mar 27, 3:09 PM CDTSpecial Weather StatementHUNMarshall36 min
Mar 27, 3:17 PM CDTSevere Thunderstorm WarningHUNJackson43 min
Mar 27, 3:30 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin45 min
Mar 27, 3:31 PM CDTTornado WarningHUNFranklin29 min
Mar 27, 3:52 PM CDTSpecial Weather StatementHUNLimestone23 min
Mar 27, 3:52 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin, Lawrence38 min
Mar 27, 4:11 PM CDTSevere Thunderstorm WarningHUNLawrence, Limestone, Morgan49 min
Mar 27, 4:25 PM CDTSevere Thunderstorm WarningHUNFranklin, Lawrence34 min
Mar 27, 4:26 PM CDTSevere Thunderstorm WarningHUNLimestone, Madison49 min
Mar 27, 4:36 PM CDTSevere Thunderstorm WarningHUNCullman39 min
Mar 27, 4:51 PM CDTSevere Thunderstorm WarningHUNLimestone, Madison24 min
Mar 27, 5:02 PM CDTSpecial Weather StatementHUNMorgan28 min
Mar 27, 5:11 PM CDTSevere Thunderstorm WarningHUNCullman34 min
Mar 27, 5:12 PM CDTSpecial Weather StatementHUNMadison33 min
Mar 27, 5:24 PM CDTSpecial Weather StatementHUNFranklin36 min
Mar 27, 5:31 PM CDTSpecial Weather StatementHUNMorgan44 min
Mar 27, 5:51 PM CDTSpecial Weather StatementHUNCullman24 min
Mar 27, 5:55 PM CDTSpecial Weather StatementHUNJackson35 min
Mar 27, 6:14 PM CDTSevere Thunderstorm WarningHUNLawrence46 min
Mar 27, 6:17 PM CDTSpecial Weather StatementHUNBlount13 min
Mar 27, 6:47 PM CDTSevere Thunderstorm WarningHUNDeKalb43 min
Mar 27, 6:53 PM CDTSpecial Weather StatementHUNMarshall37 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.