Alert archive / Arkansas / Flash Flood Warnings in 2018

Flash Flood Warning 2, NWS Memphis, TN

February 24, 2018Craighead County, Cross County, Poinsett County, Arkansas

NWS Memphis, TN issued this flash flood warning at Feb 24, 2018, 4:28 PM CST for Craighead County, Cross County, Poinsett County, Arkansas. It was in force for 4 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: Feb 24, 2018, 4:28 PM CST (22:28 UTC)
Expired: Feb 24, 2018, 8:30 PM CST
In force: 4 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Craighead County, AR, Cross County, AR, Poinsett County, AR

The radar

The Memphis radar (KNQA), 81 km from the middle of the area, began a volume at 22:27 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, 10.5 hours before the alert went out and 116 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: 42 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 568 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

809 
WGUS54 KMEG 242228
FFWMEG
ARC031-037-111-250230-
/O.NEW.KMEG.FF.W.0002.180224T2228Z-180225T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
428 PM CST SAT FEB 24 2018

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Craighead County in eastern Arkansas...
  Poinsett County in eastern Arkansas...
  Cross County in eastern Arkansas...

* Until 830 PM CST

* At 427 PM CST...1 to 2 inches of rain has occurred over the past 6 
  hours. Showers and thunderstorms will produce an additional 2 to 4 
  inches of rain over the next 4 hours.

* Some locations that will experience flooding include...
  Jonesboro, Wynne, Trumann, Marked Tree, Harrisburg, Bono, Lake
  City, Lepanto, Bay, Brookland, Monette, Caraway, Parkin, Tyronza,
  Village Creek State Park, Weiner, Cherry Valley, Cash, Hickory
  Ridge and Egypt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3588 9103 3588 9087 3597 9084 3597 9039
      3600 9038 3600 9029 3545 9029 3544 9050
      3515 9050 3515 9104

$$

1 follow-up statement

931 
WGUS74 KMEG 250156 RRA
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
756 PM CST SAT FEB 24 2018

ARC031-037-111-250206-
/O.CAN.KMEG.FF.W.0002.000000T0000Z-180225T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Craighead AR-Poinsett AR-Cross AR-
756 PM CST SAT FEB 24 2018

...THE FLASH FLOOD WARNING FOR CRAIGHEAD...POINSETT AND CROSS
COUNTIES IS CANCELLED...

The heavy rain has ended. Flash flooding is no longer expected to 
pose a threat. Please continue to heed any remaining road closures.

LAT...LON 3588 9103 3588 9087 3597 9084 3597 9039
      3600 9038 3600 9029 3545 9029 3544 9050
      3515 9050 3515 9104

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 9:26 AM CST	Dense Fog Advisory	MEG	Clay, Greene, Lawrence, Randolph	4 hr
Feb 24, 1:32 PM CST	Flash Flood Warning	MEG	Clay, Greene, Lawrence, Randolph	6 hr
Feb 24, 4:33 PM CST	Severe Thunderstorm Warning	MEG	Craighead, Greene, Lawrence, Randolph	42 min
Feb 24, 4:51 PM CST	Severe Thunderstorm Warning	MEG	Clay, Randolph	39 min
Feb 24, 5:02 PM CST	Severe Thunderstorm Warning	MEG	Craighead, Poinsett	43 min
Feb 24, 5:05 PM CST	Severe Thunderstorm Warning	MEG	Clay, Greene, Lawrence, Randolph	40 min
Feb 24, 5:06 PM CST	Tornado Warning	MEG	Clay, Randolph	24 min
Feb 24, 5:14 PM CST	Tornado Warning	MEG	Clay, Greene, Randolph	46 min
Feb 24, 5:15 PM CST	Tornado Warning	MEG	Clay, Craighead, Greene, Lawrence	24 min
Feb 24, 5:18 PM CST	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Poinsett	42 min
Feb 24, 5:29 PM CST	Tornado Warning	MEG	Craighead, Mississippi, Poinsett	10 min
Feb 24, 5:34 PM CST	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Lee, St. Francis	41 min
Feb 24, 5:40 PM CST	Flash Flood Warning	MEG	Lee, St. Francis	5 hr
Feb 24, 5:42 PM CST	Flash Flood Warning	MEG	Mississippi	6 hr
Feb 24, 5:42 PM CST	Severe Thunderstorm Warning	MEG	Clay, Craighead, Crittenden, Greene, Mississippi, Poinsett	48 min
Feb 24, 5:56 PM CST	Tornado Warning	MEG	Clay	23 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.