Alert archive / Arkansas / Flash Flood Warnings in 2018

Flash Flood Warning 29, NWS Little Rock, AR

February 24, 20185 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Feb 24, 2018, 8:00 PM CST for 5 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: Feb 24, 2018, 8:00 PM CST (02:00 UTC)
Expired: Feb 24, 2018, 11:00 PM CST
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Clark County, AR, Cleveland County, AR, Dallas County, AR, Grant County, AR, Hot Spring County, AR

The radar

The Little Rock radar (KLZK), 90 km from the middle of the area, began a volume at 01:59 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

Jackson, MS (KJAN), launched 00:00Z, 2.0 hours before the alert went out and 313 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: 170 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1404 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.1
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 Little Rock, AR wrote its last area forecast discussion before this flash flood warning went out at Feb 24, 7:45 PM CST, 15 minutes earlier.

Area forecast discussion, Feb 24, 7:45 PM CST, 15 minutes before

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Hazardous weather outlook, Feb 24, 7:36 PM CST, 24 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Little Rock AR
736 PM CST Sat Feb 24 2018

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-260145-
Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard-
Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway-
Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland-
Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant-
Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita-
Calhoun-Bradley-Drew-
736 PM CST Sat Feb 24 2018

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Tonight

Showers and thunderstorms will remain possible this evening over
the eastern half of the state as a storm system slowly exits the
state.

While the threat of severe weather has ended, several more hours
of rain are expected over the eastern parts of the state before
the precipitation slowly tapers off.

Given recent heavy to excessive rain, any additional precipitation
will aggravate high water issues that already exist across much of
the area. Most precipitation will end tonight, with drier air
building into the region. Showers may linger in the southeast
overnight.

.DAYS TWO THROUGH SEVEN...Sunday Through Friday

Additional heavy rainfall will be possible by the middle of next
week as showers and thunderstorms return to the forecast. Severe
weather may also become a concern as well. However, details
regarding the heavy rainfall and severe weather threat remain
uncertain this far out. Even so...river flooding will likely be
continuing from the current heavy rain event.

.Spotter Information Statement...

Spotter activation will be needed today in anticipation of severe
weather expected across the area this afternoon through the evening
hours.

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

In the hours before

Local storm report, Feb 24, 5:28 PM CST, 2 hours 32 minutes before

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Local storm report, Feb 24, 5:35 PM CST, 2 hours 25 minutes before

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Special weather statement, Feb 24, 5:42 PM CST, 2 hours 18 minutes before

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Local storm report, Feb 24, 6:00 PM CST, 2 hours before

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Special weather statement, Feb 24, 6:26 PM CST, 1 hour 34 minutes before

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Special weather statement, Feb 24, 7:17 PM CST, 43 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
Feb 24, 6:26 PM CST	Special Weather Statement	LZK	Desha, Lincoln	49 min
Feb 24, 6:37 PM CST	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Drew, Lincoln, Monroe	38 min
Feb 24, 6:41 PM CST	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Drew	37 min
Feb 24, 7:17 PM CST	Special Weather Statement	LZK	Desha, Drew	43 min
Feb 24, 7:51 PM CST	Areal Flood Warning	LZK	Clark, Conway, Faulkner, Garland, Grant, Hot Spring and 6 more	3 hr
Feb 24, 7:56 PM CST	Areal Flood Warning	LZK	Cleburne, Conway, Faulkner, Fulton, Independence, Izard and 7 more	3 hr
Feb 24, 8:06 PM CST	Areal Flood Warning	LZK	Independence, Jackson, Monroe, Prairie, White, Woodruff	3 hr
Feb 24, 9:45 PM CST	Flash Flood Warning	LZK	Arkansas, Bradley, Calhoun, Cleveland, Desha, Drew and 3 more	3 hr
Feb 24, 9:55 PM CST	Areal Flood Warning	LZK	Arkansas, Clark, Cleveland, Dallas, Grant, Hot Spring and 4 more	6 hr
Feb 25, 2:15 AM CST	River Flood Warning	LZK	Randolph	35 hr
Feb 25, 2:17 AM CST	River Flood Warning	LZK	Conway, Perry	72 hr
Feb 25, 8:40 AM CST	River Flood Advisory	LZK	Arkansas, Desha, Lincoln	36 hr
Feb 25, 9:35 AM CST	Areal Flood Warning	LZK	Faulkner	24 hr

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.