Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 44, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at May 4, 2021, 9:04 AM CDT for Jackson County, Alabama. It was in force for 26 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
- May 4, 2021, 9:04 AM CDT (14:04 UTC)
- Expired
- May 4, 2021, 9:30 AM CDT
- In force
- 26 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Jackson County, AL
The radar
The Northeast Alabama radar (KHTX), 11 km from the middle of the area, began a volume at 14:07 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 |
|---|---|---|---|
| May 4, 9:08 AM CDT | TSTM WND DMG | 3 S Skyline, AL | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 3 S SKYLINE. CORRECTION: TREES DOWN ACROSS HWY 79 AT CR21 SOUTH OF SKYLINE. |
| May 4, 9:10 AM CDT | TSTM WND DMG | 2 Ene Skyline, AL | TREES AND POWER LINES WERE KNOCKED DOWN AT CR 107 AT CR 241. TIME ESTIMATED BY RADAR. |
| May 4, 9:40 AM CDT | TSTM WND DMG | 3 S Skyline, AL | CORRECTION: TREES DOWN ACROSS HWY 79 AT CR21 SOUTH OF SKYLINE. TREES ALSO DOWN AT INTERSECTION OF CR107 AND CR241 NEAR HYTOP. |
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 |
|---|---|---|---|
| May 4, 5:13 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 2.1 hours before the alert went out and 197 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
- 2158 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 569 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 145 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.3
The text
As transmitted.
055
WUUS54 KHUN 041404
SVRHUN
ALC071-041430-
/O.NEW.KHUN.SV.W.0044.210504T1404Z-210504T1430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Huntsville AL
904 AM CDT Tue May 4 2021
The National Weather Service in Huntsville Alabama has issued a
* Severe Thunderstorm Warning for...
Northern Jackson County in northeastern Alabama...
* Until 930 AM CDT.
* At 904 AM CDT, a severe thunderstorm was located near Skyline, or
11 miles northwest of Scottsboro, moving northeast at 65 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, Bridgeport, Stevenson, Hollywood, Skyline, Woodville,
Pleasant Groves, Hytop, Bass and Lim Rock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3493 8560 3460 8625 3473 8636 3476 8634
3480 8634 3499 8620 3499 8564
TIME...MOT...LOC 1404Z 233DEG 57KT 3475 8621
HAIL...1.00IN
WIND...60MPH
$$
05/MA1 follow-up statement
111
WWUS54 KHUN 041417
SVSHUN
Severe Weather Statement
National Weather Service Huntsville AL
917 AM CDT Tue May 4 2021
ALC071-041430-
/O.CON.KHUN.SV.W.0044.000000T0000Z-210504T1430Z/
Jackson AL-
917 AM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR NORTHERN JACKSON COUNTY...
At 916 AM CDT, a severe thunderstorm was located near Skyline, or 11
miles north of Scottsboro, moving northeast at 55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Scottsboro, Bridgeport, Stevenson, Skyline, Pleasant Groves, Hytop,
Bass, Princeton, Jericho and Long Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3493 8560 3467 8612 3477 8631 3480 8634
3499 8620 3499 8564
TIME...MOT...LOC 1416Z 232DEG 49KT 3484 8606
HAIL...1.00IN
WIND...60MPH
$$
05/MAThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 7:18 AM CDT | Special Weather Statement | HUN | Colbert | 42 min |
| May 4, 7:45 AM CDT | Special Weather Statement | HUN | Cullman | 60 min |
| May 4, 8:31 AM CDT | Special Weather Statement | HUN | Limestone, Madison, Morgan | 44 min |
| May 4, 9:01 AM CDT | Special Weather Statement | HUN | Jackson | 44 min |
| May 4, 9:23 AM CDT | Special Weather Statement | HUN | DeKalb | 52 min |
| May 4, 9:25 AM CDT | Special Weather Statement | HUN | Cullman, Morgan | 50 min |
| May 4, 9:31 AM CDT | Severe Thunderstorm Warning | HUN | Cullman, Morgan | 39 min |
| May 4, 9:39 AM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 36 min |
| May 4, 9:51 AM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 24 min |
| May 4, 10:17 AM CDT | Special Weather Statement | HUN | DeKalb | 58 min |
| May 4, 10:47 AM CDT | Flash Flood Warning | HUN | DeKalb, Marshall | 3 hr |
| May 4, 10:51 AM CDT | Special Weather Statement | HUN | Marshall | 39 min |
| May 4, 11:15 AM CDT | Special Weather Statement | HUN | Cullman | 45 min |
| May 4, 11:18 AM CDT | Severe Thunderstorm Warning | HUN | Cullman | 42 min |
| May 4, 3:37 PM CDT | Special Weather Statement | HUN | Franklin | 23 min |
| May 4, 4:18 PM CDT | Special Weather Statement | HUN | Lauderdale | 27 min |
| May 4, 5:10 PM CDT | Special Weather Statement | HUN | Cullman | 35 min |
| May 4, 5:56 PM CDT | Special Weather Statement | HUN | Madison | 49 min |
| May 4, 6:01 PM CDT | Special Weather Statement | HUN | Marshall | 44 min |
| May 4, 6:16 PM CDT | Special Weather Statement | HUN | Madison | 44 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.