Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Huntsville, AL

May 9, 2021Jackson County, Madison County, Alabama; Franklin County, Tennessee

NWS Huntsville, AL issued this special weather statement at May 9, 2021, 8:36 PM CDT for Jackson County, Madison County, Alabama; Franklin County, Tennessee. It was in force for 39 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: May 9, 2021, 8:36 PM CDT (01:36 UTC)
Expired: May 9, 2021, 9:15 PM CDT
In force: 39 min
Issued by: NWS Huntsville, AL

Counties Jackson County, AL, Madison County, AL, Franklin County, TN

The radar

The Northeast Alabama radar (KHTX), 1 km from the middle of the area, began a volume at 01:38 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, 1.6 hours before the alert went out and 204 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 436 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted.

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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 May 9, 8:18 PM CDT, 18 minutes earlier.

Area forecast discussion, May 9, 8:18 PM CDT, 18 minutes before

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Hazardous weather outlook, May 9, 2:47 PM CDT, 5 hours 49 minutes before

Hazardous Weather Outlook
National Weather Service Huntsville AL
247 PM CDT Sun May 9 2021

ALZ001>010-016-TNZ076-096-097-101100-
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
247 PM CDT Sun May 9 2021

This Hazardous Weather Outlook is for north Alabama and portions of
southern middle Tennessee.

.DAY ONE...Tonight...

Isolated to scattered thunderstorms are expected this afternoon and
tonight. Some of the storms could become severe in intensity,
especially near and west of the Interstate 65 corridor. Strong wind
gusts up to 60 mph are the main threat. Hail and tornado formation
cannot be totally ruled out.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

No hazardous weather is expected at this time.

.SPOTTER CALL TO ACTION STATEMENT...

Activation of storm spotters and emergency management personnel is
possible this afternoon and evening.

Please relay any information about observed severe weather to the
NWS while following all local, state, and CDC guidelines.

In the hours before

Special weather statement, May 9, 5:54 PM CDT, 2 hours 42 minutes before

Special Weather Statement
National Weather Service Huntsville AL
554 PM CDT Sun May 9 2021

ALZ016-092330-
Cullman AL-
554 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CULLMAN COUNTY UNTIL
630 PM CDT...

At 554 PM CDT, Doppler radar was tracking a strong thunderstorm over
Smith Dam, or 11 miles northeast of Jasper, moving east at 50 mph.

Pea size hail and wind gusts of 35 to 40 mph will be possible with
this storm.

Locations impacted include...
Hanceville, Dodge City, Garden City, Colony, Wilburn, Bremen,
Arkadelphia, Black Bottom and Smith Lake.

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.

If on or near Smith Lake, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 3389 8701 3390 8710 3392 8708 3399 8715
      3399 8711 3403 8711 3409 8670 3405 8668
      3406 8671 3403 8670 3395 8679 3396 8682
      3393 8686 3394 8688 3392 8689 3391 8692
      3387 8692 3386 8696 3386 8699
TIME...MOT...LOC 2254Z 263DEG 42KT 3394 8710

70/DD

Special weather statement, May 9, 7:33 PM CDT, 1 hour 3 minutes before

Special Weather Statement
National Weather Service Huntsville AL
733 PM CDT Sun May 9 2021

ALZ001-005-TNZ096-100100-
Lauderdale AL-Limestone AL-Lincoln TN-
733 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN LAUDERDALE...
NORTHERN LIMESTONE AND SOUTHWESTERN LINCOLN COUNTIES UNTIL 800 PM
CDT...

At 732 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms centered near Loretto, or 12 miles south of
Lawrenceburg, and moving to the east southeast at 55 mph.

Pea size hail and wind gusts of 40 to 50 mph will be possible with
this cluster of storms.

Locations impacted include...
Athens, Ardmore, Lexington, Underwood-Petersville, Elkmont, Anderson,
Lester, Green Hill, Good Springs and Cartwright.

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
cluster of storms has passed.

&&

LAT...LON 3480 8679 3490 8769 3500 8765 3499 8684
      3512 8683 3512 8678
TIME...MOT...LOC 0032Z 280DEG 46KT 3507 8738

70/DD

Special weather statement, May 9, 7:48 PM CDT, 48 minutes before

Special Weather Statement
National Weather Service Huntsville AL
748 PM CDT Sun May 9 2021

ALZ002-003-100130-
Franklin AL-Colbert AL-
748 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN COLBERT AND WESTERN
FRANKLIN COUNTIES UNTIL 830 PM CDT...

At 747 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Midway to near Pratts Friendship. Movement
was to the east at 30 mph.

Pea size hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Red Bay, Cherokee, Belgreen, Vina, Malone, Posey Loop, Pogo, Mt
Hester, Cedar Creek Reservoir and Atwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3482 8810 3470 8770 3431 8795 3433 8817
TIME...MOT...LOC 0047Z 274DEG 26KT 3473 8818 3446 8855

70/DD

Special weather statement, May 9, 7:58 PM CDT, 38 minutes before

Special Weather Statement
National Weather Service Huntsville AL
758 PM CDT Sun May 9 2021

ALZ001-005-006-009-TNZ096-097-100145-
Madison AL-Lauderdale AL-Limestone AL-Jackson AL-Franklin TN-
Lincoln TN-
758 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN JACKSON...NORTHERN
MADISON...EAST CENTRAL LAUDERDALE...LIMESTONE...SOUTHERN LINCOLN AND
SOUTHWESTERN FRANKLIN COUNTIES UNTIL 845 PM CDT...

At 757 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Fayetteville to near Ardmore to near
Rogersville. Movement was to the southeast at 40 mph.

Pea size hail and wind gusts of 40 to 50 mph will be possible with
these storms.

Locations impacted include...
Huntsville, Madison, Athens, Fayetteville, Moores Mill,
Meridianville, Redstone Arsenal, Hazel Green, Ardmore and Lexington.

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.

&&

LAT...LON 3522 8667 3498 8622 3473 8650 3463 8696
      3493 8741 3500 8711 3499 8684 3513 8683
TIME...MOT...LOC 0057Z 295DEG 37KT 3514 8662 3495 8693 3486 8727

70/DD

Special weather statement, May 9, 8:10 PM CDT, 26 minutes before

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Special weather statement, May 9, 8:36 PM CDT, 0 minutes before

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The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 7:33 PM CDT	Special Weather Statement	HUN	Lauderdale	27 min
May 9, 7:48 PM CDT	Special Weather Statement	HUN	Colbert	42 min
May 9, 7:58 PM CDT	Special Weather Statement	HUN	Limestone, Madison	47 min
May 9, 8:10 PM CDT	Special Weather Statement	HUN	Colbert, Franklin	50 min
May 9, 8:49 PM CDT	Special Weather Statement	HUN	Lawrence	41 min
May 9, 9:17 PM CDT	Special Weather Statement	HUN	DeKalb	43 min
May 9, 9:38 PM CDT	Special Weather Statement	HUN	Cullman	52 min
May 9, 9:43 PM CDT	Special Weather Statement	HUN	Cullman, Marshall	47 min
May 10, 4:07 AM CDT	Areal Flood Warning	HUN	Madison	96 min

Nearby

Special Weather Statements in Alabama, 2021 Special Weather Statements in Tennessee, 2021 Every 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.