Alert archive / Alabama / Flash Flood Warnings in 2010

Flash Flood Warning 28, NWS Huntsville, AL

June 9, 2010Madison County, Alabama

NWS Huntsville, AL issued this flash flood warning at Jun 9, 2010, 6:46 PM CDT for Madison 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 9, 2010, 6:46 PM CDT (23:46 UTC)
Expired: Jun 9, 2010, 9:33 PM CDT
In force: 3 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

County Madison County, AL

The radar

The Northeast Alabama radar (KHTX), 46 km from the middle of the area, began a volume at 23:47 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 12:00Z, 11.8 hours before the alert went out and 152 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: 479 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 726 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.2

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 9, 6:40 PM CDT, 6 minutes earlier.

Area forecast discussion, Jun 9, 6:40 PM CDT, 6 minutes before

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Hazardous weather outlook, Jun 9, 2:30 PM CDT, 4 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
230 PM CDT WED JUN 9 2010

ALZ001>010-016-TNZ076-096-097-100300-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
230 PM CDT WED JUN 9 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS
OF SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...THIS EVENING AND TONIGHT...

SCATTERED THUNDERSTORMS...SOME STRONG TO SEVERE...WILL CONTINUE TO
DEVELOP THIS AFTERNOON ESPECIALLY IN NORTHWEST ALABAMA AND SOUTHERN
MIDDLE TENNESSEE. DAMAGING WINDS...SMALL HAIL...AND FLASH FLOODING
WILL BE THE MAIN HAZARDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS CAN BE
EXPECTED THURSDAY AND FRIDAY AND AGAIN ON MONDAY AND TUESDAY.
SOME STORMS MAY BE STRONG AND CAPABLE OF PRODUCING GUSTY WINDS AND
LOCALLY HEAVY RAINFALL.

WITH HEAT AND HIGH HUMIDITY BUILDING OVER THE AREA SATURDAY AND
SUNDAY...HEAT INDEX VALUES APPROACHING 105 DEGREES WILL BE
POSSIBLE.

.SPOTTER CALL TO ACTION STATEMENT...

FORMAL ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT
PERSONNEL IS NOT ANTICIPATED AT THIS TIME.

CA

In the hours before

Special weather statement, Jun 9, 6:02 PM CDT, 44 minutes before

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Special weather statement, Jun 9, 6:14 PM CDT, 32 minutes before

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Local storm report, Jun 9, 6:21 PM CDT, 25 minutes before

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Local storm report, Jun 9, 6:23 PM CDT, 23 minutes before

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Special weather statement, Jun 9, 6:24 PM CDT, 22 minutes before

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Special weather statement, Jun 9, 6:44 PM CDT, 2 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 9, 7:59 AM CDT	Special Weather Statement	HUN	Franklin	46 min
Jun 9, 8:57 AM CDT	Special Weather Statement	HUN	Lawrence	48 min
Jun 9, 9:12 AM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Morgan	33 min
Jun 9, 9:31 AM CDT	Special Weather Statement	HUN	Madison	29 min
Jun 9, 10:05 AM CDT	Severe Thunderstorm Warning	HUN	Madison, Marshall, Morgan	40 min
Jun 9, 10:27 AM CDT	Special Weather Statement	HUN	Cullman	63 min
Jun 9, 10:34 AM CDT	Special Weather Statement	HUN	Jackson	41 min
Jun 9, 10:51 AM CDT	Special Weather Statement	HUN	DeKalb	39 min
Jun 9, 11:08 AM CDT	Severe Thunderstorm Warning	HUN	DeKalb	24 min
Jun 9, 12:01 PM CDT	Special Weather Statement	HUN	DeKalb, Marshall	59 min
Jun 9, 3:44 PM CDT	Special Weather Statement	HUN	Lauderdale	16 min
Jun 9, 4:54 PM CDT	Special Weather Statement	HUN	Colbert	36 min
Jun 9, 5:08 PM CDT	Special Weather Statement	HUN	Colbert	37 min
Jun 9, 5:21 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	24 min
Jun 9, 5:32 PM CDT	Flash Flood Warning	HUN	Colbert	118 min
Jun 9, 5:44 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	31 min
Jun 9, 5:56 PM CDT	Special Weather Statement	HUN	Limestone	34 min
Jun 9, 6:14 PM CDT	Special Weather Statement	HUN	Limestone	31 min
Jun 9, 6:24 PM CDT	Special Weather Statement	HUN	Madison	36 min
Jun 9, 6:29 PM CDT	Severe Thunderstorm Warning	HUN	Madison	31 min
Jun 9, 6:44 PM CDT	Special Weather Statement	HUN	Limestone	31 min
Jun 9, 8:59 AM CDT	Special Weather Statement	HUN	Franklin, Moore	46 min
Jun 9, 4:16 PM CDT	Special Weather Statement	HUN	Hardin	44 min
Jun 9, 5:33 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Moore	42 min
Jun 9, 6:02 PM CDT	Special Weather Statement	HUN	Franklin	28 min
Jun 9, 6:48 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	30 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.