Alert archive / Alabama / Flash Flood Warnings in 2010

Flash Flood Warning 30, NWS Huntsville, AL

June 19, 2010Colbert County, Lauderdale County, Alabama

NWS Huntsville, AL issued this flash flood warning at Jun 19, 2010, 9:03 AM CDT for Colbert County, Lauderdale County, Alabama. It was in force for 3 hr. 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 19, 2010, 9:03 AM CDT (14:03 UTC)
Expired: Jun 19, 2010, 12:00 PM CDT
In force: 3 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

Counties Colbert County, AL, Lauderdale County, AL

The radar

The Columbus AFB radar (KGWX), 115 km from the middle of the area, began a volume at 14:03 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 12:00Z, 2.1 hours before the alert went out and 200 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: 2016 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 41 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 flash flood 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 flash flood warning went out at Jun 19, 6:43 AM CDT, 2 hours 20 minutes earlier.

Area forecast discussion, Jun 19, 6:43 AM CDT, 2 hours 20 minutes before

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Hazardous weather outlook, Jun 19, 4:29 AM CDT, 4 hours 34 minutes before

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In the hours before

Special weather statement, Jun 19, 4:30 AM CDT, 4 hours 33 minutes before

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Special weather statement, Jun 19, 8:18 AM CDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
818 AM CDT SAT JUN 19 2010

ALZ001-002-191400-
COLBERT-LAUDERDALE-
818 AM CDT SAT JUN 19 2010

...SIGNIFICANT WEATHER ADVISORY FOR COLBERT AND LAUDERDALE COUNTIES
UNTIL 900 AM CDT...

AT 812 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THUNDERSTORMS WERE RAPIDLY DEVELOPING NEAR CHEROKEE...OR 13
MILES WEST OF TUSCUMBIA...MOVING SOUTHEAST AT 10 MPH.

WINDS UP TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  BARTON.
  RED ROCK...PRIDE LANDING.
  POSEY LOOP...NEW BETHEL.

SEEK SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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 3488 8789 3464 8765 3457 8778 3457 8794
      3478 8807
TIME...MOT...LOC 1317Z 327DEG 8KT 3476 8792

RSB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:18 AM CDT	Special Weather Statement	HUN	Colbert	42 min
Jun 19, 8:25 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	37 min
Jun 19, 9:08 AM CDT	Special Weather Statement	HUN	Lauderdale	37 min
Jun 19, 10:06 AM CDT	Special Weather Statement	HUN	Franklin, Lawrence, Limestone	54 min
Jun 19, 10:55 AM CDT	Special Weather Statement	HUN	Cullman, Madison, Morgan	50 min
Jun 19, 11:16 AM CDT	Flash Flood Warning	HUN	Madison	78 min
Jun 19, 11:19 AM CDT	Flash Flood Warning	HUN	Cullman	116 min
Jun 19, 11:24 AM CDT	Special Weather Statement	HUN	Marshall	36 min
Jun 19, 12:28 PM CDT	Special Weather Statement	HUN	DeKalb	32 min
Jun 19, 12:37 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	13 min
Jun 19, 4:55 PM CDT	Special Weather Statement	HUN	Lauderdale	65 min
Jun 19, 5:19 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	26 min
Jun 19, 5:41 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	34 min
Jun 19, 6:13 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin	24 min
Jun 19, 6:00 PM CDT	Special Weather Statement	HUN	Lincoln	45 min

Nearby

Flash Flood Warnings in Alabama, 2010 Every flash flood warning in 2010

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.