Alert archive / Arkansas / Flash Flood Warnings in 2010

Flash Flood Warning 84, NWS Memphis, TN

May 15, 2010Lee County, Phillips County, Arkansas

NWS Memphis, TN issued this flash flood warning at May 15, 2010, 7:16 PM CDT for Lee County, Phillips County, Arkansas. It was in force for 2 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: May 15, 2010, 7:16 PM CDT (00:16 UTC)
Expired: May 15, 2010, 9:19 PM CDT
In force: 2 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Lee County, AR, Phillips County, AR

The radar

The Memphis radar (KNQA), 119 km from the middle of the area, began a volume at 00:17 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, 0.3 hours before the alert went out and 83 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: 270 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 845 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 May 15, 6:45 PM CDT, 31 minutes earlier.

Area forecast discussion, May 15, 6:45 PM CDT, 31 minutes before

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Hazardous weather outlook, May 15, 6:24 PM CDT, 52 minutes before

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In the hours before

Special weather statement, May 15, 5:04 PM CDT, 2 hours 12 minutes before

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Local storm report, May 15, 5:16 PM CDT, 2 hours before

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Special weather statement, May 15, 5:33 PM CDT, 1 hour 43 minutes before

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Special weather statement, May 15, 7:03 PM CDT, 13 minutes before

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Special weather statement, May 15, 7:07 PM CDT, 9 minutes before

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Local storm report, May 15, 7:09 PM CDT, 7 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
May 15, 7:16 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Henry	44 min
May 16, 12:44 AM CDT	Flash Flood Warning	MEG	Shelby	2 hr
May 16, 5:55 PM CDT	Tornado Warning	MEG	Lake	50 min
May 16, 6:34 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Haywood, Lauderdale, Tipton	26 min
May 16, 5:58 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Tunica	47 min
May 16, 6:44 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Panola, Quitman, Tallahatchie, Tate, Tunica	46 min
May 16, 5:14 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Phillips, St. Francis	46 min

Nearby

Flash Flood Warnings in Arkansas, 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.