Alert archive / Alabama / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 133, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Sep 5, 2017, 2:16 PM CDT for DeKalb County, Alabama. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 5, 2017, 2:16 PM CDT (19:16 UTC)
- Expired
- Sep 5, 2017, 2:45 PM CDT
- In force
- 29 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County DeKalb County, AL
The radar
The Northeast Alabama radar (KHTX), 58 km from the middle of the area, began a volume at 19:15 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.3 hours before the alert went out and 171 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
- 483 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 936 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 5, 12:26 PM CDT, 1 hour 50 minutes earlier.
Area forecast discussion, Sep 5, 12:26 PM CDT, 1 hour 50 minutes before
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</html>Hazardous weather outlook, Sep 5, 4:18 AM CDT, 9 hours 58 minutes before
Hazardous Weather Outlook National Weather Service Huntsville AL 418 AM CDT Tue Sep 5 2017 ALZ001>010-016-TNZ076-096-097-060030- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-De Kalb-Cullman-Moore-Lincoln-Franklin TN- 418 AM CDT Tue Sep 5 2017 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...Today and Tonight... Isolated to scattered thunderstorms will be possible this morning, well ahead of an approaching cold front. Thunderstorms will increase in coverage and intensity this afternoon and continue through the evening, as the front crosses the region. A few strong storms are possible, producing gusty winds up to 50 to 60 mph and heavy rainfall. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... No hazardous weather is expected at this time. .SPOTTER CALL TO ACTION STATEMENT... Activation of storm spotters and emergency management personnel is not anticipated at this time.
In the hours before
Special weather statement, Sep 5, 12:32 PM CDT, 1 hour 44 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1232 PM CDT TUE SEP 5 2017
TNZ076-096-097-051800-
Franklin TN-Moore TN-Lincoln TN-
1232 PM CDT TUE SEP 5 2017
...SIGNIFICANT WEATHER ADVISORY FOR MOORE...CENTRAL LINCOLN AND
NORTHWESTERN FRANKLIN COUNTIES UNTIL 100 PM CDT...
At 1232 PM CDT, Doppler radar was tracking a strong thunderstorm near
Petersburg, or 8 miles north of Fayetteville, moving east at 30 mph.
Wind gusts of 40 to 50 mph will be possible with this storm.
Locations impacted include...
Fayetteville, Lynchburg, Petersburg, Tims Ford Lake, Howell, Hurdlow,
Mimosa, Lexie Crossroads, Mulberry and Chestnut Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
storm has passed.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike several miles away from a thunderstorm. Seek a
safe shelter inside a building or vehicle.
&&
LAT...LON 3534 8624 3535 8622 3534 8620 3510 8623
3517 8671 3530 8670 3533 8660 3535 8660
3536 8648 3532 8645 3532 8642 3535 8641
3536 8635 3537 8627
TIME...MOT...LOC 1732Z 273DEG 27KT 3526 8661
70/DDSpecial weather statement, Sep 5, 1:02 PM CDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Huntsville AL
102 PM CDT TUE SEP 5 2017
TNZ076-097-051845-
Franklin TN-Moore TN-
102 PM CDT TUE SEP 5 2017
...SIGNIFICANT WEATHER ADVISORY FOR MOORE AND NORTHERN FRANKLIN
COUNTIES UNTIL 145 PM CDT...
At 102 PM CDT, Doppler radar was tracking a strong thunderstorm near
Lynchburg, moving east at 35 mph.
Wind gusts of 40 to 50 mph will be possible with this storm.
Locations impacted include...
Winchester, Lynchburg, Decherd, Estill Springs, Cowan, Monteagle,
Tims Ford Lake, Sewanee, St. Andrews and Woods Reservoir.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
storm has passed.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike several miles away from a thunderstorm. Seek a
safe shelter inside a building or vehicle.
&&
LAT...LON 3541 8625 3539 8628 3538 8625 3537 8627
3534 8624 3533 8620 3536 8616 3534 8603
3531 8600 3528 8591 3522 8586 3512 8587
3518 8637 3523 8639 3524 8643 3526 8641
3532 8643 3535 8641 3536 8633 3541 8628
TIME...MOT...LOC 1802Z 270DEG 28KT 3528 8629
70/DDSpecial weather statement, Sep 5, 1:43 PM CDT, 33 minutes before
Special Weather Statement
National Weather Service Huntsville AL
143 PM CDT TUE SEP 5 2017
ALZ008-010-051915-
Marshall AL-De Kalb AL-
143 PM CDT TUE SEP 5 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MARSHALL AND
SOUTHWESTERN DEKALB COUNTIES UNTIL 215 PM CDT...
At 142 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms located near Geraldine, or 11 miles northeast of
Albertville, moving east at 25 mph.
Pea size hail and wind gusts of 50 to 55 mph will be possible with
this cluster of storms.
Locations impacted include...
Fort Payne, Rainsville, Crossville, Sylvania, Fyffe, Powell,
Geraldine, Pine Ridge, Shiloh and Lakeview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
storm has passed.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike several miles away from a thunderstorm. Seek a
safe shelter inside a building or vehicle.
&&
LAT...LON 3429 8574 3431 8622 3450 8622 3452 8610
3451 8611 3446 8608 3447 8606 3449 8599
3454 8592 3457 8571 3431 8571
TIME...MOT...LOC 1842Z 267DEG 22KT 3440 8609
70/DDSpecial weather statement, Sep 5, 2:07 PM CDT, 9 minutes before
Special Weather Statement
National Weather Service Huntsville AL
207 PM CDT TUE SEP 5 2017
ALZ003-004-007-051930-
Lawrence AL-Morgan AL-Franklin AL-
207 PM CDT TUE SEP 5 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN FRANKLIN...WESTERN
MORGAN AND LAWRENCE COUNTIES UNTIL 230 PM CDT...
At 207 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Trinity to 8 miles northeast of Phil
Campbell to 8 miles northeast of Tremont. Movement was southeast at
15 mph.
Pea size hail and wind gusts of 50 to 55 mph will be possible with
these storms.
Locations impacted include...
Decatur, Hartselle, Moulton, Priceville, Trinity, Falkville, Phil
Campbell, Somerville, Vina and Hodges.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Strong gusty winds will be capable of knocking down small tree limbs
along with other small unsecured items. Seek safe shelter until this
line of storms has passed.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike several away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3439 8816 3448 8763 3466 8707 3443 8676
3430 8717 3432 8817
TIME...MOT...LOC 1907Z 321DEG 12KT 3457 8709 3441 8757 3430 8812
70/DDThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 1:43 PM CDT | Special Weather Statement | HUN | DeKalb | 32 min |
| Sep 5, 2:07 PM CDT | Special Weather Statement | HUN | Franklin, Lawrence, Morgan | 23 min |
| Sep 5, 2:33 PM CDT | Special Weather Statement | HUN | Morgan | 27 min |
| Sep 5, 2:57 PM CDT | Special Weather Statement | HUN | Morgan | 33 min |
| Sep 5, 3:04 PM CDT | Special Weather Statement | HUN | DeKalb | 11 min |
| Sep 5, 3:26 PM CDT | Special Weather Statement | HUN | Cullman, Marshall | 49 min |
| Sep 5, 3:34 PM CDT | Special Weather Statement | HUN | Jackson | 41 min |
| Sep 5, 3:42 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 33 min |
| Sep 5, 4:04 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 26 min |
| Sep 5, 4:29 PM CDT | Special Weather Statement | HUN | DeKalb | 46 min |
| Sep 5, 12:32 PM CDT | Special Weather Statement | HUN | Moore | 28 min |
| Sep 5, 1:02 PM CDT | Special Weather Statement | HUN | Franklin, Moore | 43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.