Alert archive / Alabama / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 66, NWS Huntsville, AL

June 22, 2018Lawrence County, Morgan County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jun 22, 2018, 5:34 PM CDT for Lawrence County, Morgan County, Alabama. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 22, 2018, 5:34 PM CDT (22:34 UTC)
Expired: Jun 22, 2018, 6:00 PM CDT
In force: 26 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Lawrence County, AL, Morgan County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.6 hours before the alert went out and 148 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: 73 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1092 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 22, 2:11 PM CDT, 3 hours 23 minutes earlier.

Area forecast discussion, Jun 22, 2:11 PM CDT, 3 hours 23 minutes before

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Hazardous weather outlook, Jun 22, 2:01 PM CDT, 3 hours 33 minutes before

Hazardous Weather Outlook...CORRECTED
National Weather Service Huntsville AL
201 PM CDT Fri Jun 22 2018

ALZ001>010-016-TNZ076-096-097-231000-
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
201 PM CDT Fri Jun 22 2018

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

.DAY ONE...This Afternoon and Tonight...

Scattered thunderstorms will shift southeast across the area through
this evening. A strong to severe thunderstorm cannot be ruled out,
with hail and gusty winds the main risks. Isolated thunderstorms may
linger after midnight southeast of a Scottsboro to Hartselle line.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday...

Another round of thunderstorms is likely on Saturday. A few strong
storms with gusty winds are quite possible.

Thunderstorm chances will shift to far north Alabama and southern
Tennessee Saturday night into Sunday morning.

Additional thunderstorm chances will remain in the forecast each day,
but the chances will be rather low as high pressure builds across the
region. Hot and humid weather is expected next week with heat index
values around 100 possible in many locations.

.SPOTTER CALL TO ACTION STATEMENT...

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

In the hours before

Special weather statement, Jun 22, 3:02 PM CDT, 2 hours 32 minutes before

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Local storm report, Jun 22, 3:03 PM CDT, 2 hours 31 minutes before

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Special weather statement, Jun 22, 3:15 PM CDT, 2 hours 19 minutes before

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Special weather statement, Jun 22, 4:39 PM CDT, 55 minutes before

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Special weather statement, Jun 22, 5:18 PM CDT, 16 minutes before

Special Weather Statement
National Weather Service Huntsville AL
518 PM CDT FRI JUN 22 2018

ALZ009-TNZ097-222245-
Jackson AL-Franklin TN-
518 PM CDT FRI JUN 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN JACKSON AND SOUTH
CENTRAL FRANKLIN COUNTIES UNTIL 545 PM CDT...

At 518 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Huntland, or 15 miles south of Winchester, moving
east at 35 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Hytop, Estillfork, Francisco, Jericho and Larkin.

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.

&&

LAT...LON 3485 8592 3491 8630 3494 8629 3494 8628
      3492 8627 3493 8626 3494 8626 3496 8629
      3502 8628 3503 8591
TIME...MOT...LOC 2218Z 274DEG 32KT 3496 8615

09

Special weather statement, Jun 22, 5:26 PM CDT, 8 minutes before

Special Weather Statement
National Weather Service Huntsville AL
526 PM CDT FRI JUN 22 2018

ALZ004-007-222315-
Lawrence AL-Morgan AL-
526 PM CDT FRI JUN 22 2018

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL MORGAN AND CENTRAL
LAWRENCE COUNTIES UNTIL 615 PM CDT...

At 526 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northwest of Moulton, moving east at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Decatur, Moulton, Trinity, Mt Hope, Chalybeate Springs, Speake, Ne
Smith, Caddo, Wren and Landersville.

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.

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 3446 8751 3463 8746 3461 8702 3434 8709
TIME...MOT...LOC 2226Z 281DEG 23KT 3454 8740

JMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:16 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	29 min
Jun 21, 7:21 PM CDT	Special Weather Statement	HUN	Colbert, Lauderdale	39 min
Jun 21, 7:45 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence	45 min
Jun 21, 8:28 PM CDT	Special Weather Statement	HUN	Lawrence	47 min
Jun 21, 9:03 PM CDT	Special Weather Statement	HUN	Limestone, Madison	42 min
Jun 21, 9:20 PM CDT	Special Weather Statement	HUN	Morgan	40 min
Jun 21, 9:52 PM CDT	Special Weather Statement	HUN	Franklin	38 min
Jun 21, 11:34 PM CDT	Special Weather Statement	HUN	Jackson	41 min
Jun 22, 12:10 PM CDT	Special Weather Statement	HUN	Limestone	35 min
Jun 22, 12:25 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	35 min
Jun 22, 12:46 PM CDT	Tornado Warning	HUN	Madison	29 min
Jun 22, 1:55 PM CDT	Special Weather Statement	HUN	Jackson	35 min
Jun 22, 3:15 PM CDT	Special Weather Statement	HUN	Colbert	30 min
Jun 22, 4:39 PM CDT	Special Weather Statement	HUN	Colbert	36 min
Jun 22, 4:55 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale, Limestone	35 min
Jun 22, 5:14 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale, Lawrence	31 min
Jun 22, 5:18 PM CDT	Special Weather Statement	HUN	Jackson	27 min
Jun 22, 5:26 PM CDT	Special Weather Statement	HUN	Lawrence	49 min
Jun 22, 5:37 PM CDT	Special Weather Statement	HUN	Madison	23 min
Jun 22, 6:06 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Morgan	24 min
Jun 22, 6:12 PM CDT	Special Weather Statement	HUN	Jackson, Madison	48 min
Jun 22, 6:31 PM CDT	Severe Thunderstorm Warning	HUN	Morgan	29 min
Jun 22, 6:40 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Morgan	35 min
Jun 22, 1:20 PM CDT	Special Weather Statement	HUN	Franklin	40 min
Jun 22, 1:24 PM CDT	Special Weather Statement	HUN	Moore	36 min
Jun 22, 1:58 PM CDT	Special Weather Statement	HUN	Lincoln	32 min
Jun 22, 2:07 PM CDT	Special Weather Statement	HUN	Franklin	23 min
Jun 22, 2:26 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln	34 min
Jun 22, 3:02 PM CDT	Special Weather Statement	HUN	Franklin	28 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2018 Every severe thunderstorm warning in 2018

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.