Alert archive / Alabama / Wind Advisories in 2008

Wind Advisory 12, NWS Huntsville, AL

May 11, 200811 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee

NWS Huntsville, AL issued this wind advisory at May 11, 2008, 4:44 AM CDT for 11 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee. It took effect at May 11, 2008, 10:00 AM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: May 11, 2008, 4:44 AM CDT (09:44 UTC)
In effect from: May 11, 2008, 10:00 AM CDT
Expired: May 11, 2008, 7:00 PM CDT
In force: 9 hr
Issued by: NWS Huntsville, AL

Counties Colbert County, AL, Cullman County, AL, DeKalb County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Franklin County, TN, Lincoln County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 69 km from the middle of the area, began a volume at 09:46 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, 9.7 hours before the alert went out and 159 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: 85 J/kg
Mixed-layer CIN: -216 J/kg
Mixed-layer LCL: 1322 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind advisory 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 wind advisory went out at May 11, 4:40 AM CDT, 4 minutes earlier.

Area forecast discussion, May 11, 4:40 AM CDT, 4 minutes before

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Hazardous weather outlook, May 11, 2:12 AM CDT, 2 hours 32 minutes before

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In the hours before

Special weather statement, May 11, 12:40 AM CDT, 4 hours 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1240 AM CDT SUN MAY 11 2008

TNZ097-110615-
FRANKLIN-
1240 AM CDT SUN MAY 11 2008

...SIGNIFICANT WEATHER ALERT FOR FRANKLIN COUNTY UNTIL 115 AM CDT...

AT 1237 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR ESTILL SPRINGS...OR 6 MILES NORTHWEST OF
WINCHESTER...MOVING EAST AT 37 MPH.

PEA SIZE HAIL AND WINDS UP TO 50 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  ESTILL SPRINGS.
  DECHERD.
  WOODS RESERVOIR.
  ALTO.

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SUNDAY MORNING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

KDW

Local storm report, May 11, 1:15 AM CDT, 3 hours 29 minutes before

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Special weather statement, May 11, 1:30 AM CDT, 3 hours 14 minutes before

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Local storm report, May 11, 2:14 AM CDT, 2 hours 30 minutes before

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Local storm report, May 11, 2:20 AM CDT, 2 hours 24 minutes before

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Local storm report, May 11, 3:40 AM CDT, 1 hour 4 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 10, 10:44 PM CDT	Tornado Warning	HUN	Colbert, Lauderdale, Lawrence, Limestone	61 min
May 10, 10:50 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lawrence	55 min
May 10, 11:25 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	23 min
May 10, 11:44 PM CDT	Tornado Warning	HUN	Lauderdale, Limestone, Madison	46 min
May 10, 11:48 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lawrence, Limestone, Morgan	42 min
May 11, 12:04 AM CDT	Tornado Warning	HUN	Cullman	41 min
May 11, 12:27 AM CDT	Severe Thunderstorm Warning	HUN	Jackson, Limestone, Madison, Marshall, Morgan	63 min
May 11, 12:40 AM CDT	Tornado Warning	HUN	Cullman	35 min
May 11, 12:45 AM CDT	Tornado Warning	HUN	Madison, Marshall, Morgan	27 min
May 11, 1:08 AM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Marshall	32 min
May 10, 11:02 PM CDT	Severe Thunderstorm Warning	HUN	Lincoln, Moore	43 min
May 10, 11:27 PM CDT	Flash Flood Warning	HUN	Lincoln, Moore	2 hr
May 10, 11:44 PM CDT	Severe Thunderstorm Warning	HUN	Moore	31 min
May 11, 12:06 AM CDT	Severe Thunderstorm Warning	HUN	Franklin	15 min

Nearby

Wind Advisories in Alabama, 2008 Wind Advisories in Tennessee, 2008 Every wind advisory in 2008

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.