Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Huntsville, AL

March 25, 2021DeKalb County, Jackson County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 25, 2021, 9:13 AM CDT for DeKalb County, Jackson County, Alabama. It was in force for 62 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 25, 2021, 9:13 AM CDT (14:13 UTC)
Expired
Mar 25, 2021, 10:15 AM CDT
In force
62 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties DeKalb County, AL, Jackson County, AL

The radar

The Northeast Alabama radar (KHTX), 54 km from the middle of the area, began a volume at 14:12 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 25, 9:25 AM CDTHAIL 13 W Lakeview, ALUP TO 1 INCH HAIL DURING SEVERE WARNED STORM.
Mar 25, 9:30 AM CDTTSTM WND DMGFyffe, ALEQUIPMENT SHED DESTROYED IN THE TOWN OF FYFFE.

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 166 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 2021-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 54 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 2021-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 613 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
54 J/kg
Mixed-layer CIN
-239 J/kg
Mixed-layer LCL
507 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
613 m²/s²
0-3 km storm-relative helicity
713 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.6

Open this sounding in Storm Lab

The text

As transmitted.

073 
WUUS54 KHUN 251413
SVRHUN
ALC049-071-251515-
/O.NEW.KHUN.SV.W.0008.210325T1413Z-210325T1515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
913 AM CDT Thu Mar 25 2021

The National Weather Service in Huntsville Alabama has issued a

* Severe Thunderstorm Warning for...
  Southeastern Jackson County in northeastern Alabama...
  DeKalb County in northeastern Alabama...

* Until 1015 AM CDT.

* At 913 AM CDT, severe thunderstorms were located along a line
  extending from 7 miles southwest of Section to 8 miles southeast of
  Grant to near Guntersville to near Albertville, moving east at 40
  mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Scottsboro, Fort Payne, Rainsville, Henagar, Crossville, Sylvania,
  Fyffe, Powell, Geraldine and Section.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3448 8558 3444 8558 3437 8563 3436 8566
      3427 8575 3423 8611 3440 8612 3447 8607
      3447 8609 3453 8611 3452 8614 3454 8614
      3453 8615 3457 8615 3489 8559 3453 8551
TIME...MOT...LOC 1413Z 257DEG 36KT 3453 8611 3442 8619 3434 8622 3426
8631

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

05/MA
3 follow-up statements
296 
WWUS54 KHUN 251433
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
933 AM CDT Thu Mar 25 2021

ALC049-071-251515-
/O.CON.KHUN.SV.W.0008.000000T0000Z-210325T1515Z/
Jackson AL-DeKalb AL-
933 AM CDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR SOUTHEASTERN JACKSON AND DEKALB COUNTIES...

At 933 AM CDT, severe thunderstorms were located along a line
extending from near Sylvania to near Fyffe to near Geraldine to near
Crossville, moving east at 50 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Scottsboro, Fort Payne, Rainsville, Henagar, Crossville, Sylvania,
Fyffe, Powell, Geraldine and Section.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3448 8558 3444 8558 3437 8563 3436 8566
      3427 8575 3429 8607 3452 8601 3466 8599
      3489 8559 3453 8551
TIME...MOT...LOC 1433Z 254DEG 42KT 3459 8586 3448 8594 3440 8597 3432
8606

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

05/MA
640 
WWUS54 KHUN 251446
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
946 AM CDT Thu Mar 25 2021

ALC049-071-251515-
/O.CON.KHUN.SV.W.0008.000000T0000Z-210325T1515Z/
Jackson AL-DeKalb AL-
946 AM CDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT
FOR EAST CENTRAL JACKSON AND DEKALB COUNTIES...

At 945 AM CDT, severe thunderstorms were located along a line
extending from near Henagar to near Sylvania to near Fort Payne to 6
miles southeast of Fyffe, moving east at 40 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Fort Payne, Rainsville, Henagar, Sylvania, Fyffe, Ider, Valley Head,
Hammondville, Mentone and Pine Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3444 8558 3437 8563 3436 8566 3427 8575
      3428 8594 3455 8586 3476 8577 3488 8559
      3453 8551 3448 8558
TIME...MOT...LOC 1445Z 257DEG 36KT 3463 8566 3452 8574 3444 8577 3436
8586

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

05/MA
714 
WWUS54 KHUN 251514
SVSHUN

Severe Weather Statement
National Weather Service Huntsville AL
1014 AM CDT Thu Mar 25 2021

ALC049-071-251524-
/O.EXP.KHUN.SV.W.0008.000000T0000Z-210325T1515Z/
Jackson AL-DeKalb AL-
1014 AM CDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL JACKSON AND
DEKALB COUNTIES WILL EXPIRE AT 1015 AM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with these thunderstorms.

LAT...LON 3444 8558 3437 8563 3436 8566 3427 8575
      3428 8594 3455 8586 3476 8577 3488 8559
      3453 8551 3448 8558
TIME...MOT...LOC 1514Z 257DEG 36KT 3470 8532 3459 8540 3451 8543 3443
8552

$$

AMP

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 25, 3:01 AM CDTWind AdvisoryHUNColbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more20 hr
Mar 25, 6:40 AM CDTSpecial Weather StatementHUNMarshall50 min
Mar 25, 7:37 AM CDTSpecial Weather StatementHUNColbert38 min
Mar 25, 7:55 AM CDTSpecial Weather StatementHUNCullman50 min
Mar 25, 8:20 AM CDTSevere Thunderstorm WarningHUNCullman, Morgan25 min
Mar 25, 8:38 AM CDTSevere Thunderstorm WarningHUNMarshall52 min
Mar 25, 8:50 AM CDTSpecial Weather StatementHUNCullman40 min
Mar 25, 9:16 AM CDTFlash Flood WarningHUNCullman, Marshall, Morgan4 hr
Mar 25, 10:22 AM CDTFlash Flood WarningHUNCullman, DeKalb, Jackson, Madison, Marshall, Morgan3 hr
Mar 25, 10:49 AM CDTSpecial Weather StatementHUNMarshall, Morgan41 min
Mar 25, 2:21 PM CDTFlash Flood WarningHUNCullman, Lawrence, Marshall, Morgan3 hr
Mar 25, 2:35 PM CDTFlash Flood WarningHUNLawrence, Limestone, Morgan3 hr
Mar 25, 2:37 PM CDTSpecial Weather StatementHUNColbert, Lauderdale38 min
Mar 25, 2:45 PM CDTFlash Flood WarningHUNColbert, Franklin, Lauderdale, Lawrence3 hr
Mar 25, 2:53 PM CDTTornado WarningHUNColbert, Franklin, Lauderdale21 min
Mar 25, 2:56 PM CDTSpecial Weather StatementHUNJackson34 min
Mar 25, 3:07 PM CDTFlash Flood WarningHUNCullman, DeKalb, Jackson, Madison, Marshall, Morgan3 hr
Mar 25, 4:08 PM CDTSpecial Weather StatementHUNMarshall37 min
Mar 25, 4:44 PM CDTSpecial Weather StatementHUNDeKalb46 min
Mar 25, 5:01 PM CDTSpecial Weather StatementHUNCullman29 min
Mar 25, 5:16 PM CDTAreal Flood WarningHUNColbert, Franklin, Lauderdale, Lawrence4 hr
Mar 25, 5:21 PM CDTAreal Flood WarningHUNLawrence, Limestone, Morgan5 hr
Mar 25, 5:23 PM CDTAreal Flood WarningHUNCullman, Lawrence, Marshall, Morgan5 hr
Mar 25, 6:13 PM CDTAreal Flood WarningHUNCullman, DeKalb, Jackson, Madison, Marshall, Morgan3 hr
Mar 25, 6:22 PM CDTFlash Flood Warning Considerable damage threatHUNDeKalb3 hr
Mar 25, 6:24 PM CDTSpecial Weather StatementHUNDeKalb, Marshall51 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2021Every severe thunderstorm warning in 2021

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.