Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 25, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Mar 28, 2021, 4:46 AM CDT for 4 counties in Alabama. It was in force for 44 min. 3 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 28, 2021, 4:46 AM CDT (09:46 UTC)
- Expired
- Mar 28, 2021, 5:30 AM CDT
- In force
- 44 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jackson County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL
The radar
The Northeast Alabama radar (KHTX), 50 km from the middle of the area, began a volume at 09:45 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 28, 5:08 AM CDT | HAIL 0.5 | 5 Se Huntsville, AL | |
| Mar 28, 5:17 AM CDT | TSTM WND DMG | 3 Nne Huntsville, AL | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 3 NNE HUNTSVILLE. A TREE WAS KNOCKED DOWN ONTO PULASKI PIKE BETWEEN MALLORY DRIVE AND GUS GRISSOM DRIVE. |
| Mar 28, 5:21 AM CDT | TSTM WND DMG | 3 Nne Huntsville, AL | A TREE WAS KNOCKED DOWN ONTO PULASKI PIKE BETWEEN MALLORY DRIVE AND GUS GRISSOM DRIVE. |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 27, 11:27 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 9.8 hours before the alert went out and 162 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.
- Mixed-layer CAPE
- 643 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1359 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.7
The text
As transmitted.
031
WUUS54 KHUN 280946
SVRHUN
ALC071-083-089-103-281030-
/O.NEW.KHUN.SV.W.0025.210328T0946Z-210328T1030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
446 AM CDT Sun Mar 28 2021
The National Weather Service in Huntsville Alabama has issued a
* Severe Thunderstorm Warning for...
West central Jackson County in northeastern Alabama...
Central Madison County in north central Alabama...
Southeastern Limestone County in north central Alabama...
Central Morgan County in north central Alabama...
* Until 530 AM CDT.
* At 446 AM CDT, a severe thunderstorm was located over Priceville,
or near Decatur, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Huntsville, Decatur, Madison, Hartselle, Redstone Arsenal, Moores
Mill, Priceville, Owens Cross Roads, Gurley and Woodville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 600 AM CDT for north central,
northeastern and northwestern Alabama...and Middle Tennessee.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3462 8619 3460 8630 3459 8630 3454 8656
3442 8698 3467 8696 3490 8636
TIME...MOT...LOC 0946Z 248DEG 49KT 3455 8690
HAIL...<.75IN
WIND...60MPH
$$
GH2 follow-up statements
877
WWUS54 KHUN 281005
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
505 AM CDT Sun Mar 28 2021
ALC083-281014-
/O.CAN.KHUN.SV.W.0025.000000T0000Z-210328T1030Z/
Limestone AL-
505 AM CDT Sun Mar 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LIMESTONE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 600 AM CDT for north central
and northeastern Alabama...and Middle Tennessee.
LAT...LON 3490 8636 3462 8619 3454 8656 3447 8681
3467 8678
TIME...MOT...LOC 1004Z 248DEG 49KT 3465 8661
$$
ALC071-089-103-281030-
/O.CON.KHUN.SV.W.0025.000000T0000Z-210328T1030Z/
Jackson AL-Madison AL-Morgan AL-
505 AM CDT Sun Mar 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 AM CDT
FOR WEST CENTRAL JACKSON...CENTRAL MADISON AND EAST CENTRAL MORGAN
COUNTIES...
At 504 AM CDT, a severe thunderstorm was located near Redstone
Arsenal, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Huntsville, Madison, Redstone Arsenal, Moores Mill, Owens Cross
Roads, Gurley, Woodville, Triana, Marshall Space Flight Center and
University Of Alabama In Huntsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 600 AM CDT for north central
and northeastern Alabama...and Middle Tennessee.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3490 8636 3462 8619 3454 8656 3447 8681
3467 8678
TIME...MOT...LOC 1004Z 248DEG 49KT 3465 8661
HAIL...<.75IN
WIND...60MPH
$$
GH497
WWUS54 KHUN 281021
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
521 AM CDT Sun Mar 28 2021
ALC071-089-103-281031-
/O.EXP.KHUN.SV.W.0025.000000T0000Z-210328T1030Z/
Jackson AL-Madison AL-Morgan AL-
521 AM CDT Sun Mar 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JACKSON...CENTRAL
MADISON AND EAST CENTRAL MORGAN COUNTIES WILL EXPIRE AT 530 AM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
A Tornado Watch remains in effect until 600 AM CDT for north central
and northeastern Alabama...and Middle Tennessee.
LAT...LON 3490 8636 3462 8619 3454 8656 3447 8681
3467 8678
TIME...MOT...LOC 1021Z 248DEG 49KT 3473 8637
$$
GHThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 12:31 AM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale | 44 min |
| Mar 28, 1:13 AM CDT | Special Weather Statement | HUN | Lauderdale | 47 min |
| Mar 28, 1:52 AM CDT | Flash Flood Warning | HUN | Lauderdale | 3 hr |
| Mar 28, 2:39 AM CDT | Special Weather Statement | HUN | Colbert | 51 min |
| Mar 28, 2:45 AM CDT | Special Weather Statement | HUN | Franklin | 45 min |
| Mar 28, 3:09 AM CDT | Severe Thunderstorm Warning | HUN | Colbert, Franklin, Lawrence | 36 min |
| Mar 28, 3:34 AM CDT | Severe Thunderstorm Warning | HUN | Lawrence, Limestone, Morgan | 26 min |
| Mar 28, 3:58 AM CDT | Severe Thunderstorm Warning | HUN | Jackson, Limestone, Madison, Morgan | 47 min |
| Mar 28, 4:26 AM CDT | Severe Thunderstorm Warning | HUN | Jackson | 34 min |
| Mar 28, 5:02 AM CDT | Severe Thunderstorm Warning | HUN | Cullman | 28 min |
| Mar 28, 5:21 AM CDT | Severe Thunderstorm Warning | HUN | Jackson | 24 min |
| Mar 28, 5:30 AM CDT | Severe Thunderstorm Warning | HUN | Cullman | 30 min |
| Mar 28, 5:41 AM CDT | Areal Flood Warning | HUN | Madison | 3 hr |
| Mar 28, 5:57 AM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Marshall | 33 min |
| Mar 28, 6:26 AM CDT | Special Weather Statement | HUN | DeKalb | 34 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.