Alert archive / Arkansas / Flash Flood Warnings in 2020

Flash Flood Warning 87, NWS Little Rock, AR

August 31, 20206 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Aug 31, 2020, 8:50 AM CDT for 6 counties in Arkansas. 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: Aug 31, 2020, 8:50 AM CDT (13:50 UTC)
Expired: Aug 31, 2020, 11:50 AM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Garland County, AR, Hot Spring County, AR, Montgomery County, AR, Perry County, AR, Saline County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 81 km from the middle of the area, began a volume at 13:49 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

Springfield, MO (KSGF), launched 12:00Z, 1.8 hours before the alert went out and 255 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: 2773 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.9

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 Little Rock, AR wrote its last area forecast discussion before this flash flood warning went out at Aug 31, 6:42 AM CDT, 2 hours 8 minutes earlier.

Area forecast discussion, Aug 31, 6:42 AM CDT, 2 hours 8 minutes before

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Hazardous weather outlook, Aug 31, 6:46 AM CDT, 2 hours 4 minutes before

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In the hours before

Special weather statement, Aug 31, 6:35 AM CDT, 2 hours 15 minutes before

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Special weather statement, Aug 31, 6:40 AM CDT, 2 hours 10 minutes before

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Special weather statement, Aug 31, 7:38 AM CDT, 1 hour 12 minutes before

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Special weather statement, Aug 31, 7:50 AM CDT, 1 hour before

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Special weather statement, Aug 31, 8:04 AM CDT, 46 minutes before

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Special weather statement, Aug 31, 8:41 AM CDT, 9 minutes before

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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 31, 5:32 AM CDT	Special Weather Statement	LZK	Johnson	43 min
Aug 31, 6:35 AM CDT	Special Weather Statement	LZK	Logan, Scott	40 min
Aug 31, 6:40 AM CDT	Special Weather Statement	LZK	Pope	50 min
Aug 31, 6:57 AM CDT	Severe Thunderstorm Warning	LZK	Logan, Yell	48 min
Aug 31, 7:07 AM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott	38 min
Aug 31, 7:09 AM CDT	Flash Flood Warning	LZK	Logan, Scott	4 hr
Aug 31, 7:21 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Saline, Yell	20 min
Aug 31, 7:26 AM CDT	Flash Flood Warning	LZK	Logan, Yell	4 hr
Aug 31, 7:38 AM CDT	Special Weather Statement	LZK	Scott	52 min
Aug 31, 7:50 AM CDT	Special Weather Statement	LZK	Scott	40 min
Aug 31, 8:04 AM CDT	Special Weather Statement	LZK	Yell	41 min
Aug 31, 8:41 AM CDT	Special Weather Statement	LZK	Pulaski	49 min
Aug 31, 8:51 AM CDT	Special Weather Statement	LZK	Pulaski	39 min
Aug 31, 9:53 AM CDT	Flash Flood Warning	LZK	Grant, Hot Spring, Saline	3 hr
Aug 31, 12:13 PM CDT	River Flood Advisory	LZK	Yell	21 hr
Aug 31, 12:18 PM CDT	Flash Flood Warning	LZK	Hot Spring	6 hr
Aug 31, 2:49 PM CDT	Flash Flood Watch	LZK	Baxter, Clark, Cleburne, Conway, Dallas, Faulkner and 17 more	60 hr
Aug 31, 4:25 PM CDT	River Flood Warning	LZK	Yell	5 days
Aug 31, 4:30 PM CDT	River Flood Warning	LZK	Yell	46 hr

Nearby

Flash Flood Warnings in Arkansas, 2020 Every flash flood warning in 2020

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.