Alert archive / Arkansas / Flash Flood Warnings in 2009

Flash Flood Warning 225, NWS Memphis, TN

October 29, 20095 counties in Arkansas

NWS Memphis, TN issued this flash flood warning at Oct 29, 2009, 8:53 PM CDT for 5 counties in Arkansas. It was in force for 4 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: Oct 29, 2009, 8:53 PM CDT (01:53 UTC)
Expired: Oct 30, 2009, 1:00 AM CDT
In force: 4 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Clay County, AR, Craighead County, AR, Greene County, AR, Lawrence County, AR, Randolph County, AR

The radar

The Memphis radar (KNQA), 119 km from the middle of the area, began a volume at 01:55 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

Little Rock, AR (KLZK), launched 00:00Z, 1.9 hours before the alert went out and 163 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: 1460 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 483 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 548 m²/s²
0-3 km storm-relative helicity: 584 m²/s²
Significant tornado parameter: 3.9
Supercell composite: 25.8

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 Memphis, TN wrote its last area forecast discussion before this flash flood warning went out at Oct 29, 8:41 PM CDT, 12 minutes earlier.

Area forecast discussion, Oct 29, 8:41 PM CDT, 12 minutes before

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Hazardous weather outlook, Oct 29, 3:11 PM CDT, 5 hours 42 minutes before

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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 29, 10:16 PM CDT	River Flood Warning	MEG	Quitman	37 hr
Oct 29, 10:16 PM CDT	River Flood Warning	MEG	Tallahatchie	61 hr
Oct 29, 10:16 PM CDT	River Flood Warning	MEG	Tallahatchie	61 hr
Oct 30, 2:19 AM CDT	Flash Flood Warning	MEG	Coahoma, DeSoto, Tunica	12 hr
Oct 30, 11:04 AM CDT	River Flood Warning	MEG	Lafayette, Marshall, Union	24 hr
Oct 30, 11:04 AM CDT	River Flood Warning	MEG	Lowndes, Monroe	5 days
Oct 30, 12:55 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Tippah, Union	35 min
Oct 30, 1:15 PM CDT	Severe Thunderstorm Warning	MEG	Pontotoc, Tippah, Union	30 min
Oct 30, 1:33 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Pontotoc, Union	27 min
Oct 30, 2:26 PM CDT	Tornado Warning	MEG	Monroe	39 min
Oct 30, 2:31 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	43 min
Oct 30, 2:51 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Monroe	39 min
Oct 29, 10:16 PM CDT	River Flood Warning	MEG	Crockett, Dyer, Lauderdale	36 hr
Oct 30, 2:36 AM CDT	Flash Flood Warning	MEG	Dyer, Lake, Lauderdale, Tipton	12 hr
Oct 30, 3:36 AM CDT	Severe Thunderstorm Warning	MEG	Lake, Obion	37 min
Oct 30, 11:01 AM CDT	River Flood Warning	MEG	Dyer, Lake, Lauderdale	5 days
Oct 30, 12:01 PM CDT	Severe Thunderstorm Warning	MEG	Henry, Weakley	29 min
Oct 30, 2:15 PM CDT	Flash Flood Warning	MEG	Decatur	2 hr
Oct 29, 9:42 PM CDT	River Flood Warning	MEG	Clay, Greene	3 days
Oct 29, 9:42 PM CDT	River Flood Warning	MEG	Mississippi, Poinsett	38 hr
Oct 29, 9:42 PM CDT	River Flood Warning	MEG	Lee, St. Francis	8 days
Oct 29, 10:28 PM CDT	River Flood Warning	MEG	Craighead	60 hr
Oct 30, 1:04 AM CDT	Flash Flood Warning	MEG	Clay, Craighead, Cross, Greene, Lawrence, Lee and 3 more	11 hr

Nearby

Flash Flood Warnings in Arkansas, 2009 Every flash flood warning in 2009

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.