Alert archive / Arkansas / Flash Flood Warnings in 2020

Flash Flood Warning 15, NWS Little Rock, AR

May 15, 20208 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at May 15, 2020, 6:45 PM CDT for 8 counties in 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, 2020, 6:45 PM CDT (23:45 UTC)
Expired: May 15, 2020, 8:45 PM CDT
In force: 2 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Clark County, AR, Garland County, AR, Hot Spring County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Yell County, AR

The radar

The Western Arkansas radar (KSRX), 116 km from the middle of the area, began a volume at 23:50 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, 11.8 hours before the alert went out and 268 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -234 m²/s²
0-3 km storm-relative helicity: -297 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 15, 1:58 PM CDT, 4 hours 47 minutes earlier.

Area forecast discussion, May 15, 1:58 PM CDT, 4 hours 47 minutes before

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Hazardous weather outlook, May 15, 4:45 AM CDT, 14 hours before

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In the hours before

Special weather statement, May 15, 3:50 PM CDT, 2 hours 55 minutes before

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Special weather statement, May 15, 4:30 PM CDT, 2 hours 15 minutes before

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Special weather statement, May 15, 5:56 PM CDT, 49 minutes before

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Special weather statement, May 15, 6:16 PM CDT, 29 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
May 15, 3:16 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott	29 min
May 15, 3:45 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott	25 min
May 15, 3:50 PM CDT	Special Weather Statement	LZK	Polk	40 min
May 15, 4:30 PM CDT	Special Weather Statement	LZK	Montgomery, Scott	45 min
May 15, 4:33 PM CDT	Flash Flood Warning	LZK	Logan, Montgomery, Polk, Scott, Yell	3 hr
May 15, 4:39 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	21 min
May 15, 5:56 PM CDT	Special Weather Statement	LZK	Pike	49 min
May 15, 6:09 PM CDT	Severe Thunderstorm Warning	LZK	Pike	36 min
May 15, 6:16 PM CDT	Special Weather Statement	LZK	Montgomery	44 min
May 15, 6:52 PM CDT	Special Weather Statement	LZK	Pike	38 min

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.