Alert archive / Alabama / Special Weather Statements in 2021
Special Weather Statement, NWS Huntsville, AL
NWS Huntsville, AL issued this special weather statement at Jul 30, 2021, 10:00 PM CDT for Cullman County, Lawrence County, Alabama. It was in force for 30 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
- Jul 30, 2021, 10:00 PM CDT (03:00 UTC)
- Expired
- Jul 30, 2021, 10:30 PM CDT
- In force
- 30 min
- Issued by
- NWS Huntsville, AL
Counties Cullman County, AL, Lawrence County, AL
The radar
The Columbus AFB radar (KGWX), 119 km from the middle of the area, began a volume at 03:01 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
Birmingham, AL (KBMX), launched 00:00Z, 3.0 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
- 2302 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1114 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 30, 9:53 PM CDT, 7 minutes earlier.
Area forecast discussion, Jul 30, 9:53 PM CDT, 7 minutes before
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</html>Hazardous weather outlook, Jul 30, 8:19 PM CDT, 1 hour 41 minutes before
Hazardous Weather Outlook National Weather Service Huntsville AL 819 PM CDT Fri Jul 30 2021 ALZ001>010-016-TNZ076-096-097-311000- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 819 PM CDT Fri Jul 30 2021 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 7 PM CDT SATURDAY... This Hazardous Weather Outlook is for north central Alabama, northeast Alabama, northwest Alabama and southern middle Tennessee. .DAY ONE...Tonight. Scattered to numerous thunderstorms will occur this evening. A few storms could be strong with gusty winds over 40 mph and frequent lightning. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Dangerous heat is expected across the Tennessee Valley again on Saturday, with peak heat index values in excess of 105 degrees expected. A Heat Advisory is in effect for the entire forecast area from 10 AM to 7 PM CDT. A few strong to marginally severe thunderstorms capable of damaging wind gusts and locally heavy rainfall are possible late Saturday night into Sunday. The coverage of thunderstorms will remain fairly high on Sunday night and Monday, before diminishing on Monday night as a cold front crosses the region. Nonetheless, a few thunderstorms will be possible in the eastern portion of the outlook area through Thursday. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management personnel is not anticipated at this time.
In the hours before
Special weather statement, Jul 30, 8:25 PM CDT, 1 hour 35 minutes before
Special Weather Statement National Weather Service Huntsville AL 825 PM CDT Fri Jul 30 2021 ALZ001-002-004-310215- Lawrence AL-Lauderdale AL-Colbert AL- 825 PM CDT Fri Jul 30 2021 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LAUDERDALE...SOUTHEASTERN COLBERT AND NORTHWESTERN LAWRENCE COUNTIES UNTIL 915 PM CDT... At 825 PM CDT, Doppler radar was tracking a strong thunderstorm over Underwood-Petersville, moving southeast at 30 mph. Winds around 40 mph will be possible with this storm. Locations impacted include... Florence, Muscle Shoals, Sheffield, Tuscumbia, Killen, Littleville, Leighton, St. Florian, Underwood-Petersville and Northwest Alabama Regional Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Very heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. 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 3493 8779 3499 8764 3471 8737 3458 8768 TIME...MOT...LOC 0125Z 337DEG 25KT 3485 8766 KTW
Special weather statement, Jul 30, 8:32 PM CDT, 1 hour 28 minutes before
Special Weather Statement
National Weather Service Huntsville AL
832 PM CDT Fri Jul 30 2021
ALZ016-310200-
Cullman AL-
832 PM CDT Fri Jul 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CULLMAN COUNTY UNTIL
900 PM CDT...
At 832 PM CDT, Doppler radar was tracking a strong thunderstorm near
the Smith Dam to around the Colony area, moving south at 15 mph.
Locations impacted include...
Hanceville, Dodge City, Garden City, Colony, Wilburn, Bremen,
Arkadelphia, Black Bottom and Smith Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Very heavy rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
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 3389 8701 3390 8710 3392 8708 3399 8715
3399 8711 3405 8711 3406 8669 3405 8671
3403 8670 3395 8679 3396 8682 3393 8686
3394 8688 3392 8689 3391 8692 3387 8692
3386 8696 3386 8699
TIME...MOT...LOC 0132Z 353DEG 14KT 3393 8686
KTWSpecial weather statement, Jul 30, 8:37 PM CDT, 1 hour 23 minutes before
Special Weather Statement National Weather Service Huntsville AL 837 PM CDT Fri Jul 30 2021 ALZ005>008-310200- Marshall AL-Madison AL-Morgan AL-Limestone AL- 837 PM CDT Fri Jul 30 2021 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MARSHALL...SOUTHWESTERN MADISON...SOUTHEASTERN LIMESTONE AND EAST CENTRAL MORGAN COUNTIES UNTIL 900 PM CDT... At 836 PM CDT, Doppler radar was tracking a strong thunderstorm over Madison, moving south at 25 mph. Locations impacted include... Southwestern Huntsville, Madison, Athens, Redstone Arsenal, Priceville, Triana, Marshall Space Flight Center, Morgan City, Huntsville International Airport and University Of Alabama In Huntsville. PRECAUTIONARY/PREPAREDNESS ACTIONS... Very heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. 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 3478 8693 3481 8670 3448 8648 3441 8686 TIME...MOT...LOC 0136Z 345DEG 21KT 3471 8679 KTW
Special weather statement, Jul 30, 8:46 PM CDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Huntsville AL
846 PM CDT Fri Jul 30 2021
ALZ001>004-310230-
Lawrence AL-Lauderdale AL-Franklin AL-Colbert AL-
846 PM CDT Fri Jul 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LAUDERDALE...
COLBERT...FRANKLIN AND NORTHERN LAWRENCE COUNTIES UNTIL 930 PM CDT...
At 845 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from St. Florian to near Muscle Shoals to Belmont.
Movement was southeast at 20 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Florence, Muscle Shoals, Russellville, Sheffield, Tuscumbia, Red Bay,
Phil Campbell, Killen, Town Creek and Littleville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Very heavy rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike several miles away from a thunderstorm. Seek a
safe shelter inside a building or vehicle.
&&
LAT...LON 3463 8813 3479 8769 3493 8750 3457 8715
3444 8747 3431 8783 3432 8813 3432 8816
3435 8817 3437 8817
TIME...MOT...LOC 0145Z 333DEG 19KT 3487 8765 3473 8764 3451 8819
KTWSpecial weather statement, Jul 30, 9:05 PM CDT, 55 minutes before
Special Weather Statement National Weather Service Huntsville AL 905 PM CDT Fri Jul 30 2021 ALZ002>004-310230- Lawrence AL-Franklin AL-Colbert AL- 905 PM CDT Fri Jul 30 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN COLBERT... NORTHEASTERN FRANKLIN AND WESTERN LAWRENCE COUNTIES UNTIL 930 PM CDT... At 904 PM CDT, Doppler radar was tracking a strong thunderstorm near Town Creek, moving southwest at 10 mph. Wind gusts to 55 mph will be possible with this storm. Locations impacted include... Russellville, Moulton, Town Creek, Littleville, Leighton, Courtland, Mt Hope, La Grange, Tharptown and Ne Smith. PRECAUTIONARY/PREPAREDNESS ACTIONS... Very heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. 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 3476 8754 3463 8723 3434 8734 3455 8778 TIME...MOT...LOC 0204Z 025DEG 7KT 3460 8739 KTW
Special weather statement, Jul 30, 10:00 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 7:19 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson, Madison, Marshall | 26 min |
| Jul 30, 7:45 PM CDT | Special Weather Statement | HUN | Cullman | 45 min |
| Jul 30, 7:45 PM CDT | Severe Thunderstorm Warning | HUN | Marshall | 19 min |
| Jul 30, 7:50 PM CDT | Special Weather Statement | HUN | Colbert | 25 min |
| Jul 30, 8:25 PM CDT | Special Weather Statement | HUN | Lauderdale | 50 min |
| Jul 30, 8:32 PM CDT | Special Weather Statement | HUN | Cullman | 28 min |
| Jul 30, 8:37 PM CDT | Special Weather Statement | HUN | Morgan | 23 min |
| Jul 30, 8:46 PM CDT | Special Weather Statement | HUN | Colbert, Franklin, Lawrence | 44 min |
| Jul 30, 9:05 PM CDT | Special Weather Statement | HUN | Lawrence | 25 min |
| Jul 30, 9:25 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence, Morgan | 35 min |
| Jul 31, 2:12 PM CDT | Special Weather Statement | HUN | Cullman | 48 min |
Nearby
Special Weather Statements in Alabama, 2021Every special weather statement 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.