Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Huntsville, AL

June 3, 2021Franklin County, Tennessee

NWS Huntsville, AL issued this special weather statement at Jun 3, 2021, 8:29 AM CDT for Franklin County, Tennessee. It was in force for 46 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: Jun 3, 2021, 8:29 AM CDT (13:29 UTC)
Expired: Jun 3, 2021, 9:15 AM CDT
In force: 46 min
Issued by: NWS Huntsville, AL

County Franklin County, TN

The radar

The Northeast Alabama radar (KHTX), 13 km from the middle of the area, began a volume at 13:31 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 12:00Z, 1.5 hours before the alert went out and 128 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: 300 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

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 Jun 3, 6:23 AM CDT, 2 hours 6 minutes earlier.

Area forecast discussion, Jun 3, 6:23 AM CDT, 2 hours 6 minutes before

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Hazardous weather outlook, Jun 3, 3:56 AM CDT, 4 hours 33 minutes before

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In the hours before

Special weather statement, Jun 3, 3:08 AM CDT, 5 hours 21 minutes before

Special Weather Statement
National Weather Service Huntsville AL
308 AM CDT Thu Jun 3 2021

ALZ004-005-007-030900-
Lawrence AL-Morgan AL-Limestone AL-
308 AM CDT Thu Jun 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LIMESTONE...
NORTHWESTERN MORGAN AND SOUTHEASTERN LAWRENCE COUNTIES UNTIL 400 AM
CDT...

At 308 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Moulton, moving northeast at 35 mph.

Penny size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Decatur, Madison, Athens, Hartselle, Priceville, Trinity, Tanner,
Huntsville International Airport, Mooresville and Belle Mina.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm 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 3436 8717 3445 8725 3476 8702 3474 8679
      3469 8678 3452 8680
TIME...MOT...LOC 0808Z 222DEG 31KT 3445 8715

Special weather statement, Jun 3, 3:21 AM CDT, 5 hours 8 minutes before

Special Weather Statement
National Weather Service Huntsville AL
321 AM CDT Thu Jun 3 2021

ALZ005-006-TNZ076-096-030915-
Madison AL-Limestone AL-Moore TN-Lincoln TN-
321 AM CDT Thu Jun 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MADISON...
NORTHEASTERN LIMESTONE...WEST CENTRAL MOORE AND LINCOLN COUNTIES
UNTIL 415 AM CDT...

At 320 AM CDT, Doppler radar was tracking a cluster of strong
thunderstorms crossing the I-65 corridor in southern middle
Tennessee south to near Athens, moving northeast at 30 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Athens, Fayetteville, Ardmore, Petersburg, Harvest, Elkmont, French
Mill, Elkwood, Howell and Mimosa.

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.

&&

LAT...LON 3535 8654 3536 8649 3534 8647 3532 8643
      3473 8680 3475 8706 3500 8696 3499 8684
      3526 8683 3525 8675 3531 8668 3533 8660
      3536 8660 3537 8659
TIME...MOT...LOC 0820Z 222DEG 27KT 3485 8693

Local storm report, Jun 3, 3:45 AM CDT, 4 hours 44 minutes before

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Special weather statement, Jun 3, 3:49 AM CDT, 4 hours 40 minutes before

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Special weather statement, Jun 3, 8:23 AM CDT, 6 minutes before

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Special weather statement, Jun 3, 8:29 AM 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
Jun 2, 9:02 PM CDT	Special Weather Statement	HUN	DeKalb	28 min
Jun 3, 12:46 AM CDT	Special Weather Statement	HUN	Lauderdale	44 min
Jun 3, 1:17 AM CDT	Special Weather Statement	HUN	Colbert, Lauderdale	43 min
Jun 3, 2:06 AM CDT	Special Weather Statement	HUN	Lauderdale	39 min
Jun 3, 2:37 AM CDT	Severe Thunderstorm Warning	HUN	Lauderdale, Lawrence, Limestone	38 min
Jun 3, 3:08 AM CDT	Special Weather Statement	HUN	Morgan	52 min
Jun 3, 3:21 AM CDT	Special Weather Statement	HUN	Limestone	54 min
Jun 3, 8:23 AM CDT	Special Weather Statement	HUN	Jackson	37 min
Jun 3, 9:36 AM CDT	Special Weather Statement	HUN	Jackson	24 min
Jun 3, 4:07 PM CDT	Special Weather Statement	HUN	DeKalb	38 min
Jun 3, 3:49 AM CDT	Special Weather Statement	HUN	Moore	56 min

Nearby

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.