Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 80, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Aug 18, 2021, 7:39 PM CDT for Lincoln County, Tennessee; Madison County, Alabama. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2021, 7:39 PM CDT (00:39 UTC)
- Expired
- Aug 18, 2021, 8:15 PM CDT
- In force
- 36 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Madison County, AL, Lincoln County, TN
The radar
The Northeast Alabama radar (KHTX), 29 km from the middle of the area, began a volume at 00:42 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.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 0.7 hours before the alert went out and 131 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
- 576 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 656 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted.
959
WUUS54 KHUN 190039
SVRHUN
ALC089-TNC103-190115-
/O.NEW.KHUN.SV.W.0080.210819T0039Z-210819T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
739 PM CDT Wed Aug 18 2021
The National Weather Service in Huntsville Alabama has issued a
* Severe Thunderstorm Warning for...
Northeastern Madison County in north central Alabama...
Southeastern Lincoln County in Middle Tennessee...
* Until 815 PM CDT
* At 739 PM CDT, a severe thunderstorm was located near Hazel Green,
or 9 miles north of Meridianville, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Hazel Green, New Market, Lincoln, Plevna, Flintville, Elora,
Belleview, Fisk and Crystal Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3503 8632 3490 8633 3489 8634 3487 8635
3484 8634 3496 8663 3505 8662 3510 8632
TIME...MOT...LOC 0039Z 275DEG 24KT 3499 8653
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
092 follow-up statements
229
WWUS54 KHUN 190100
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
800 PM CDT Wed Aug 18 2021
ALC089-TNC103-190115-
/O.CON.KHUN.SV.W.0080.000000T0000Z-210819T0115Z/
Madison AL-Lincoln TN-
800 PM CDT Wed Aug 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHEASTERN MADISON AND SOUTHEASTERN LINCOLN COUNTIES...
At 759 PM CDT, a severe thunderstorm was located near New Market, or
12 miles northeast of Moores Mill, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Hazel Green, New Market, Lincoln, Plevna, Flintville, Elora,
Belleview, Fisk and Crystal Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3503 8632 3490 8633 3489 8634 3487 8635
3484 8634 3496 8663 3505 8662 3510 8632
TIME...MOT...LOC 0059Z 275DEG 24KT 3498 8636
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RSB492
WWUS54 KHUN 190106
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
806 PM CDT Wed Aug 18 2021
ALC089-TNC103-190115-
/O.EXP.KHUN.SV.W.0080.000000T0000Z-210819T0115Z/
Madison AL-Lincoln TN-
806 PM CDT Wed Aug 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MADISON AND
SOUTHEASTERN LINCOLN COUNTIES WILL EXPIRE AT 815 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
this thunderstorm.
LAT...LON 3503 8632 3490 8633 3489 8634 3487 8635
3484 8634 3496 8663 3505 8662 3510 8632
TIME...MOT...LOC 0105Z 275DEG 24KT 3498 8633
$$
RSBThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:36 PM CDT | Special Weather Statement | HUN | Franklin | 24 min |
| Aug 19, 8:17 AM CDT | Special Weather Statement | HUN | Morgan | 43 min |
| Aug 19, 9:04 AM CDT | Special Weather Statement | HUN | Cullman, Morgan | 41 min |
| Aug 19, 9:47 AM CDT | Flash Flood Warning | HUN | Cullman | 3 hr |
| Aug 19, 10:32 AM CDT | Special Weather Statement | HUN | Marshall | 43 min |
| Aug 19, 11:05 AM CDT | Special Weather Statement | HUN | DeKalb | 55 min |
| Aug 19, 11:58 AM CDT | Special Weather Statement | HUN | DeKalb | 32 min |
| Aug 19, 1:06 PM CDT | Areal Flood Warning | HUN | Cullman | 39 min |
| Aug 19, 2:22 PM CDT | Special Weather Statement | HUN | Franklin | 38 min |
| Aug 19, 2:49 PM CDT | Special Weather Statement | HUN | Franklin | 41 min |
| Aug 19, 4:45 PM CDT | Flash Flood Warning | HUN | Franklin | 3 hr |
| Aug 19, 5:51 PM CDT | Flash Flood Warning | HUN | Franklin | 2 hr |
| Aug 19, 6:18 PM CDT | Special Weather Statement | HUN | Madison | 27 min |
| Aug 19, 6:45 PM CDT | Special Weather Statement | HUN | Madison | 45 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2021Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.