Alert archive / Arkansas / Flash Flood Warnings in 2017

Flash Flood Warning 58, NWS Little Rock, AR

July 6, 20174 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Jul 6, 2017, 7:30 AM CDT for 4 counties in Arkansas. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 6, 2017, 7:30 AM CDT (12:30 UTC)
Expired
Jul 6, 2017, 9:00 AM CDT
In force
90 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Bradley County, AR, Calhoun County, AR, Cleveland County, AR, Ouachita County, AR

The radar

The Little Rock radar (KLZK), 135 km from the middle of the area, began a volume at 12:33 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, 0.5 hours before the alert went out and 177 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2017-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1396 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2017-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1396 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

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 Jul 6, 6:35 AM CDT, 55 minutes earlier.

Area forecast discussion, Jul 6, 6:35 AM CDT, 55 minutes before
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Hazardous weather outlook, Jul 6, 4:30 AM CDT, 3 hours before
Hazardous Weather Outlook
National Weather Service Little Rock AR
430 AM CDT Thu Jul 6 2017

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-071000-
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-
430 AM CDT Thu Jul 6 2017

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

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected today, as the
upper low pressure system and weak front gradually move through
and out of the region later tonight. The main area that will see
rain will be central and southern Arkansas. An isolated strong to
severe storm may develop, but the overall severe storm threat is
low and isolated. Strong winds and hail would be the main threats.
Heavy rain will also be seen in some areas with localized
flooding possible. Tonight, rain chances push to mainly southern
to far southern Arkansas.

.DAYS TWO THROUGH SEVEN...Friday Through Wednesday

Isolated to scattered showers and thunderstorms are possible
through the period, as the upper northwest flow brings weather
systems to Arkansas. A bit lower chances are forecast Friday with
weaker upper system support. Some decrease in coverage is
expected over the weekend and early next week as upper level high
pressure starts to build in from the west. Overall, the threat of
any severe storms will be low and isolated.

.Spotter Information Statement...

Spotter activation is not anticipated today or tonight.

&&

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

59

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 5:29 AM CDTFlash Flood WarningLZKBradley, Calhoun, Cleveland, Dallas, Ouachita2 hr
Jul 6, 5:09 PM CDTSpecial Weather StatementLZKPrairie36 min

Nearby

Flash Flood Warnings in Arkansas, 2017Every flash flood warning in 2017

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.