Alert archive / Tennessee / Special Weather Statements in 2019

Special Weather Statement, NWS Huntsville, AL

August 3, 2019Franklin County, Tennessee

NWS Huntsville, AL issued this special weather statement at Aug 3, 2019, 8:49 PM CDT for Franklin County, Tennessee. It was in force for 41 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: Aug 3, 2019, 8:49 PM CDT (01:49 UTC)
Expired: Aug 3, 2019, 9:30 PM CDT
In force: 41 min
Issued by: NWS Huntsville, AL

County Franklin County, TN

The radar

The Northeast Alabama radar (KHTX), 18 km from the middle of the area, began a volume at 01:49 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 00:00Z, 1.8 hours before the alert went out and 243 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: 1037 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1240 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Aug 3, 6:23 PM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Aug 3, 6:23 PM CDT, 2 hours 26 minutes before

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Hazardous weather outlook, Aug 3, 2:49 PM CDT, 6 hours before

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In the hours before

Special weather statement, Aug 3, 4:10 PM CDT, 4 hours 39 minutes before

Special Weather Statement
National Weather Service Huntsville AL
410 PM CDT Sat Aug 3 2019

ALZ008-032200-
Marshall AL-
410 PM CDT Sat Aug 3 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MARSHALL COUNTY
UNTIL 500 PM CDT...

At 409 PM CDT, Doppler radar was tracking a strong thunderstorm over
Boaz, moving southwest at 5 mph.

Winds in excess of 30 mph and heavy rainfall will be possible with
this storm.

Locations impacted include...
Albertville, Boaz, Douglas, McVille, High Point, Horton, Hustleville,
Rabbit Town and Hyatt.

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 3422 8642 3432 8615 3427 8610 3419 8610
      3418 8619 3410 8630
TIME...MOT...LOC 2109Z 051DEG 6KT 3422 8617

JMS

Special weather statement, Aug 3, 4:22 PM CDT, 4 hours 27 minutes before

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Local storm report, Aug 3, 5:18 PM CDT, 3 hours 31 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
Aug 4, 3:26 PM CDT	Special Weather Statement	HUN	Jackson	34 min
Aug 4, 4:17 PM CDT	Special Weather Statement	HUN	DeKalb	43 min
Aug 4, 4:58 PM CDT	Special Weather Statement	HUN	DeKalb	32 min
Aug 4, 5:17 PM CDT	Special Weather Statement	HUN	Marshall	28 min
Aug 4, 5:46 PM CDT	Flash Flood Warning	HUN	DeKalb, Marshall	109 min
Aug 4, 5:49 PM CDT	Special Weather Statement	HUN	Madison, Marshall	56 min
Aug 4, 6:03 PM CDT	Special Weather Statement	HUN	Lauderdale, Limestone	42 min
Aug 4, 6:41 PM CDT	Special Weather Statement	HUN	Limestone, Marshall, Morgan	64 min
Aug 4, 6:44 PM CDT	Special Weather Statement	HUN	Lauderdale, Lawrence	61 min
Aug 3, 8:38 PM CDT	Special Weather Statement	HUN	Lincoln	52 min
Aug 4, 1:29 PM CDT	Special Weather Statement	HUN	Moore	31 min
Aug 4, 1:40 PM CDT	Special Weather Statement	HUN	Moore	35 min
Aug 4, 2:51 PM CDT	Special Weather Statement	HUN	Franklin	24 min
Aug 4, 3:11 PM CDT	Special Weather Statement	HUN	Franklin	49 min
Aug 4, 5:34 PM CDT	Special Weather Statement	HUN	Lincoln	41 min

Nearby

Special Weather Statements in Tennessee, 2019 Every special weather statement in 2019

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.