Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Huntsville, AL

June 17, 2011Marshall County, Alabama

NWS Huntsville, AL issued this special weather statement at Jun 17, 2011, 1:21 AM CDT for Marshall County, Alabama. It was in force for 24 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 17, 2011, 1:21 AM CDT (06:21 UTC)
Expired
Jun 17, 2011, 1:45 AM CDT
In force
24 min
Issued by
NWS Huntsville, AL

County Marshall County, AL

The radar

The Northeast Alabama radar (KHTX), 73 km from the middle of the area, began a volume at 06:25 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

Birmingham, AL (KBMX), launched 00:00Z, 6.4 hours before the alert went out and 134 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2011-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2415 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2011-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2415 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1807 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
-18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

887 
WWUS84 KHUN 170621
SPSHUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
121 AM CDT FRI JUN 17 2011

ALZ006>008-016-170645-
CULLMAN-MADISON-MARSHALL-MORGAN-
121 AM CDT FRI JUN 17 2011

...SIGNIFICANT WEATHER ADVISORY FOR CULLMAN...MADISON...MARSHALL AND
MORGAN COUNTIES UNTIL 145 AM CDT...

AT 121 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM MORGAN CITY TO RYAN 
CROSSROADS TO JOPPA...AND MOVING EAST AT 35 MPH.

NICKEL SIZE HAIL...WIND GUSTS OF 50 TO 60 MPH...AND DEADLY CLOUD TO 
GROUND LIGHTNING STRIKES ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  UNION GROVE.
  NEW HOPE...MOUNTAIN VIEW.
  GUNTERSVILLE.
  GRANT...COLUMBUS CITY.

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

&&

LAT...LON 3436 8663 3448 8669 3459 8631 3448 8620
      3432 8622 3426 8647 3426 8651 3424 8652
      3422 8662
TIME...MOT...LOC 0620Z 250DEG 36KT 3447 8655 3439 8651
          3429 8651

$$

70/DD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 12:33 AM CDTSevere Thunderstorm WarningHUNLimestone, Madison, Morgan42 min
Jun 17, 12:37 AM CDTSpecial Weather StatementHUNLauderdale, Lawrence38 min
Jun 17, 12:43 AM CDTSevere Thunderstorm WarningHUNColbert, Cullman, Lauderdale, Lawrence, Limestone, Morgan47 min
Jun 17, 12:50 AM CDTSevere Thunderstorm WarningHUNCullman, Morgan40 min
Jun 17, 1:40 AM CDTSpecial Weather StatementHUNMarshall35 min
Jun 17, 2:08 AM CDTSpecial Weather StatementHUNJackson37 min
Jun 17, 2:51 AM CDTSpecial Weather StatementHUNDeKalb39 min
Jun 17, 8:08 AM CDTSpecial Weather StatementHUNMadison52 min
Jun 17, 8:34 AM CDTSpecial Weather StatementHUNMorgan41 min
Jun 17, 9:03 AM CDTSpecial Weather StatementHUNMorgan42 min
Jun 17, 9:48 AM CDTSpecial Weather StatementHUNMorgan42 min
Jun 17, 9:54 AM CDTSpecial Weather StatementHUNDeKalb51 min
Jun 17, 10:31 AM CDTSpecial Weather StatementHUNMarshall44 min
Jun 17, 11:20 AM CDTSpecial Weather StatementHUNCullman40 min
Jun 17, 1:48 AM CDTSpecial Weather StatementHUNLincoln27 min

Nearby

Special Weather Statements in Alabama, 2011Every special weather statement in 2011

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.