Alert archive / Arkansas / Flash Flood Warnings in 2017

Flash Flood Warning 63, NWS Memphis, TN

July 25, 2017Craighead County, Arkansas

NWS Memphis, TN issued this flash flood warning at Jul 25, 2017, 4:34 PM CDT for Craighead County, 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 outline as issued.

The facts

Issued
Jul 25, 2017, 4:34 PM CDT (21:34 UTC)
Expired
Jul 25, 2017, 7:30 PM CDT
In force
3 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

County Craighead County, AR

The radar

The Memphis radar (KNQA), 97 km from the middle of the area, began a volume at 21:36 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

Little Rock, AR (KBYH), launched 12:00Z, 9.6 hours before the alert went out and 136 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, Little Rock, AR at 12:00Z on 2017-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1789 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2017-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
1789 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1149 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

967 
WGUS54 KMEG 252134
FFWMEG
ARC031-260030-
/O.NEW.KMEG.FF.W.0063.170725T2134Z-170726T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
434 PM CDT TUE JUL 25 2017

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Central Craighead County in eastern Arkansas...

* Until 730 PM CDT

* At 433 PM CDT...Local Law Enforcement estimates 1 to 3 inches of
  rain has occurred in the past 30 minutes. Showers and thunderstorms
  will produce an additional 1 to 3 inches of rain over the next
  hour.

* Some locations that will experience flooding include...
  Jonesboro, Bono, Herman, Herndon, Gilkerson and Valley View. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3596 9059 3576 9073 3578 9085 3594 9081

$$
1 follow-up statement
633 
WGUS74 KMEG 252237
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
537 PM CDT TUE JUL 25 2017

ARC031-252244-
/O.CAN.KMEG.FF.W.0063.000000T0000Z-170726T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Craighead AR-
537 PM CDT TUE JUL 25 2017

...THE FLASH FLOOD WARNING FOR CENTRAL CRAIGHEAD COUNTY IS
CANCELLED...

The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures.

LAT...LON 3596 9059 3576 9073 3578 9085 3594 9081

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 25, 2:06 PM CDTSpecial Weather StatementMEGGreene24 min
Jul 25, 2:25 PM CDTExcessive Heat WarningMEGClay, Craighead, Greene, Mississippi, Poinsett5 hr
Jul 25, 2:25 PM CDTHeat AdvisoryMEGClay, Craighead, Greene, Mississippi, Poinsett22 hr
Jul 25, 3:06 PM CDTSpecial Weather StatementMEGCraighead24 min
Jul 25, 3:41 PM CDTFlash Flood WarningMEGCraighead3 hr

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.