Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Huntsville, AL

June 2, 2021DeKalb County, Alabama

NWS Huntsville, AL issued this special weather statement at Jun 2, 2021, 9:02 PM CDT for DeKalb County, Alabama. It was in force for 28 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 2, 2021, 9:02 PM CDT (02:02 UTC)
Expired: Jun 2, 2021, 9:30 PM CDT
In force: 28 min
Issued by: NWS Huntsville, AL

County DeKalb County, AL

The radar

The Northeast Alabama radar (KHTX), 54 km from the middle of the area, began a volume at 02:01 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

Nashville Metro, TN (KBNA), launched 00:00Z, 2.0 hours before the alert went out and 195 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: 389 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 228 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.1

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 2, 7:57 PM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jun 2, 7:57 PM CDT, 1 hour 5 minutes before

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Hazardous weather outlook, Jun 2, 3:06 PM CDT, 5 hours 56 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Huntsville AL
306 PM CDT Wed Jun 2 2021

ALZ001>010-016-TNZ076-096-097-031130-
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
306 PM CDT Wed Jun 2 2021

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

.DAY ONE...Remainder of today and tonight...

Scattered to numerous thunderstorms will shift eastward across the
outlook area this afternoon and overnight, ahead of a cold front. A
few of the storms could be strong to marginally severe, especially
west of the Interstate 65 corridor. Damaging winds of 50 to 60 MPH,
winds, frequent lightning and locally heavy rainfall will be the main
impacts from the strongest storms.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Scattered to numerous showers and thunderstorms are expected to
develop along and ahead of a cold front on Thursday, with the best
coverage being along and east of the Interstate 65 corridor. A few of
these storms could be strong to marginally severe.

Isolated to scattered thunderstorms will be possible Sunday through
Tuesday.

.SPOTTER CALL TO ACTION STATEMENT...

Activation of storm spotters and emergency management personnel is
not anticipated at this time.

70/DD

In the hours before

Local storm report, Jun 2, 5:51 PM CDT, 3 hours 11 minutes before

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Local storm report, Jun 2, 5:52 PM CDT, 3 hours 10 minutes before

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Local storm report, Jun 2, 5:54 PM CDT, 3 hours 8 minutes before

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Special weather statement, Jun 2, 6:13 PM CDT, 2 hours 49 minutes before

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Special weather statement, Jun 2, 6:33 PM CDT, 2 hours 29 minutes before

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Special weather statement, Jun 2, 9:02 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
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
Jun 3, 8:29 AM CDT	Special Weather Statement	HUN	Franklin	46 min

Nearby

Special Weather Statements in Alabama, 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.