Alert archive / Arkansas / Flash Flood Warnings in 2018

Flash Flood Warning 134, NWS Little Rock, AR

October 31, 20186 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Oct 31, 2018, 4:32 PM 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: Oct 31, 2018, 4:32 PM CDT (21:32 UTC)
Expired: Oct 31, 2018, 7:30 PM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Garland County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Yell County, AR

The radar

The Western Arkansas radar (KSRX), 98 km from the middle of the area, began a volume at 21:32 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

Shreveport, LA (KBAD), launched 12:00Z, 9.5 hours before the alert went out and 236 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: 273 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 723 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.4

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 Oct 31, 3:13 PM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Oct 31, 3:13 PM CDT, 1 hour 19 minutes before

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Hazardous weather outlook, Oct 31, 5:32 AM CDT, 11 hours before

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In the hours before

Special weather statement, Oct 31, 2:32 PM CDT, 2 hours before

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Special weather statement, Oct 31, 2:59 PM CDT, 1 hour 33 minutes before

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Special weather statement, Oct 31, 3:37 PM CDT, 55 minutes before

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Special weather statement, Oct 31, 4:25 PM CDT, 7 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
Oct 31, 10:05 AM CDT	Flash Flood Warning	LZK	Faulkner, Pulaski, Saline	90 min
Oct 31, 2:32 PM CDT	Special Weather Statement	LZK	Polk	28 min
Oct 31, 2:59 PM CDT	Special Weather Statement	LZK	Montgomery, Pike	46 min
Oct 31, 3:37 PM CDT	Special Weather Statement	LZK	Montgomery	38 min
Oct 31, 3:47 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Pike, Polk	43 min
Oct 31, 4:25 PM CDT	Special Weather Statement	LZK	Montgomery	35 min
Oct 31, 4:57 PM CDT	Special Weather Statement	LZK	Independence	33 min
Oct 31, 4:58 PM CDT	Special Weather Statement	LZK	Pike	62 min
Oct 31, 5:59 PM CDT	Special Weather Statement	LZK	Garland, Hot Spring	46 min
Oct 31, 6:21 PM CDT	Flash Flood Warning	LZK	Cleburne, Independence, Jackson, Lawrence, Sharp, White	3 hr
Oct 31, 6:56 PM CDT	Special Weather Statement	LZK	Saline	34 min

Nearby

Flash Flood Warnings in Arkansas, 2018 Every flash flood warning in 2018

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.