Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Huntsville, AL

March 1, 2017Marshall County, Morgan County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 1, 2017, 2:10 PM CST for Marshall County, Morgan County, Alabama. It was in force for 35 min. 8 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, 2:10 PM CST (20:10 UTC)
Expired
Mar 1, 2017, 2:45 PM CST
In force
35 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Marshall County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 59 km from the middle of the area, began a volume at 20:06 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, 2:13 PM CSTHAIL 1.256 N Baileyton, ALIN RYAN CROSSROADS AREA--LOCATION APPROXIMATE. RELAYED VIA LOCAL NEWS MEDIA.
Mar 1, 2:13 PM CSTHAIL 1.256 N Baileyton, ALRELAYED VIA LOCAL NEWS MEDIA.
Mar 1, 2:20 PM CSTHAIL 14 Sse New Hope, ALQUARTER SIZE HAIL AND 56 MPH WIND GUST IN HEBRON.
Mar 1, 2:30 PM CSTHAIL 13 Sw Columbus City, ALONE INCH HAIL WAS REPORTED.
Mar 1, 2:30 PM CSTHAIL 1.753 N Guntersville, ALWINDOWS BROKEN OUT BY GOLF BALL HAIL NEAR HWY 431 AND CLAYSVILLE SCHOOL AND THE AIRPORT.
Mar 1, 2:43 PM CSTTSTM WND DMG5 Nw Union Grove, ALPOWER LINES AND TREES DOWN NEAR QUARRY RD. AND UNION GROVE RD.
Mar 1, 2:49 PM CSTTSTM WND DMG5 Nw Langston, ALTREES DOWN ON A HOUSE ON BURROUGHS LOOP.
Mar 1, 2:52 PM CSTTSTM WND DMG4 N Guntersville, ALTREES DOWN AT WILLOW LAKE AND BURROUGHS DR.

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

Birmingham, AL (KBMX), launched 12:00Z, 8.2 hours before the alert went out and 147 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 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 246 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 290 square meters per square second.1939587897117Sfc1 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
246 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
290 m²/s²
0-3 km storm-relative helicity
372 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted.

437 
WUUS54 KHUN 012010
SVRHUN
ALC095-103-012045-
/O.NEW.KHUN.SV.W.0021.170301T2010Z-170301T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
210 PM CST WED MAR 1 2017

The National Weather Service in Huntsville Alabama has issued a

* Severe Thunderstorm Warning for...
  Marshall County in northeastern Alabama...
  Southeastern Morgan County in north central Alabama...

* Until 245 PM CST

* At 210 PM CST, a severe thunderstorm was located near Morgan City,
  or 8 miles northwest of Arab, moving east at 50 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Guntersville, Arab, Grant, Morgan City, Union Grove, Hulaco, Lake
  Guntersville St Park, Hebron, Ryan Crossroads and Columbus City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.

&&

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

LAT...LON 3430 8648 3431 8669 3447 8672 3451 8654
      3448 8650 3448 8643 3450 8639 3452 8639
      3452 8635 3451 8634 3455 8631 3459 8615
      3452 8614 3453 8613 3430 8614
TIME...MOT...LOC 2010Z 261DEG 42KT 3440 8660 

HAIL...1.25IN
WIND...60MPH
 
$$

KDW
2 follow-up statements
299 
WWUS54 KHUN 012021
SVSHUN

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

ALC103-012030-
/O.CAN.KHUN.SV.W.0021.000000T0000Z-170301T2045Z/
Morgan AL-
221 PM CST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORGAN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
southeastern Morgan County. Therefore, the warning has been 
cancelled.

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

LAT...LON 3431 8658 3450 8656 3451 8654 3448 8650
      3448 8643 3450 8639 3452 8639 3452 8635
      3451 8634 3455 8631 3459 8615 3453 8614
      3452 8614 3453 8613 3430 8614
TIME...MOT...LOC 2020Z 261DEG 42KT 3442 8645 

$$

ALC095-012045-
/O.CON.KHUN.SV.W.0021.000000T0000Z-170301T2045Z/
Marshall AL-
221 PM CST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CST
FOR MARSHALL COUNTY...

At 220 PM CST, a severe thunderstorm was located near Union Grove, 
moving east at 50 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Guntersville, Arab, Grant, Union Grove, Columbus City, Lake
Guntersville St Park, Eddy, Hebron, Hustleville and Mountain View.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

For your protection move to an interior room on the lowest floor of a
building.

&&

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

LAT...LON 3431 8658 3450 8656 3451 8654 3448 8650
      3448 8643 3450 8639 3452 8639 3452 8635
      3451 8634 3455 8631 3459 8615 3453 8614
      3452 8614 3453 8613 3430 8614
TIME...MOT...LOC 2020Z 261DEG 42KT 3442 8645 

HAIL...1.25IN
WIND...60MPH
 
$$

KDW
593 
WWUS54 KHUN 012035
SVSHUN

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

ALC095-012045-
/O.CON.KHUN.SV.W.0021.000000T0000Z-170301T2045Z/
Marshall AL-
235 PM CST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CST
FOR NORTHEASTERN MARSHALL COUNTY...

At 232 PM CST, a severe thunderstorm was located near Grant, or near
Guntersville, moving east at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Public. At about 220 PM, quarter size hail was reported 
         in the town of Hebron. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Guntersville, Grant, Hebron, Columbus City and Lake Guntersville St
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

For your protection move to an interior room on the lowest floor of a
building.

&&

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

LAT...LON 3437 8638 3444 8640 3447 8640 3450 8639
      3452 8639 3452 8635 3451 8634 3455 8631
      3459 8615 3453 8614 3452 8614 3453 8613
      3434 8614
TIME...MOT...LOC 2032Z 261DEG 47KT 3444 8625 

HAIL...1.00IN
WIND...60MPH
 
$$

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, 12:10 PM CSTTornado WarningHUNLauderdale, Limestone35 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, 2:15 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

Severe Thunderstorm Warnings in Alabama, 2017Every severe thunderstorm warning 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.