Alert archive / Arkansas / Flash Flood Warnings in 2017

Flash Flood Warning 9, NWS Memphis, TN

April 30, 2017Dunklin County, Pemiscot County, Missouri; 4 counties in Arkansas

NWS Memphis, TN issued this flash flood warning at Apr 30, 2017, 2:32 AM CDT for Dunklin County, Pemiscot County, Missouri; 4 counties in Arkansas. It was in force for 11 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
Apr 30, 2017, 2:32 AM CDT (07:32 UTC)
Expired
Apr 30, 2017, 1:57 PM CDT
In force
11 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Clay County, AR, Craighead County, AR, Greene County, AR, Mississippi County, AR, Dunklin County, MO, Pemiscot County, MO

The radar

The Memphis radar (KNQA), 92 km from the middle of the area, began a volume at 07:36 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 00:00Z, 7.5 hours before the alert went out and 149 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 00:00Z on 2017-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1699 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, Little Rock, AR at 00:00Z on 2017-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.193958Sfc1 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
1699 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
993 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
1.2
Supercell composite
11.6

Open this sounding in Storm Lab

The text

As transmitted.

266 
WGUS54 KMEG 300732
FFWMEG
ARC021-031-055-093-MOC069-155-301030-
/O.NEW.KMEG.FF.W.0009.170430T0732Z-170430T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
232 AM CDT SUN APR 30 2017

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Eastern Greene County in eastern Arkansas...
  Eastern Craighead County in eastern Arkansas...
  Mississippi County in eastern Arkansas...
  Eastern Clay County in eastern Arkansas...
  Pemiscot County in southeastern Missouri...
  Dunklin County in southeastern Missouri...

* Until 530 AM CDT

* At 230 AM CDT...Doppler Radar estimates at least one inch of rain 
  has occurred in the past hour with hourly rainfall rates between 3 
  to 4 inches an hour. Showers and thunderstorms will produce an 
  additional 1 to 3 inches of rain in the next 3 hours. 

* Some locations that will experience flooding include...
  Blytheville, Kennett, Osceola, Caruthersville, Malden, Piggott,
  Gosnell, Manila, Hayti, Steele, Leachville, Campbell, Rector,
  Senath, Monette, Caraway, Luxora, Keiser, Chalk Bluff Natural Area
  and Cardwell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3663 8996 3639 8997 3640 8959 3634 8955
      3634 8961 3625 8956 3624 8970 3615 8959
      3600 8973 3581 8971 3574 8995 3567 8994
      3566 8993 3563 8986 3571 9044 3650 9033
      3650 9022 3663 9015

$$
3 follow-up statements
141 
WGUS54 KMEG 300956
FFWMEG
ARC021-031-055-093-MOC069-155-301630-
/O.EXT.KMEG.FF.W.0009.000000T0000Z-170430T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
456 AM CDT SUN APR 30 2017

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Eastern Greene County in eastern Arkansas...
  Eastern Craighead County in eastern Arkansas...
  Mississippi County in eastern Arkansas...
  Eastern Clay County in eastern Arkansas...
  Pemiscot County in southeastern Missouri...
  Dunklin County in southeastern Missouri...

* Until 1130 AM CDT Sunday

* At 455 AM CDT...Doppler Radar estimates 2 to 3 inches of rain has 
  occurred over the past 3 hours. Showers and thunderstorms will 
  produce an additional 1 to 2 inches of rain over the next 6 hours.

* Some locations that will experience flooding include...
  Blytheville, Kennett, Osceola, Caruthersville, Malden, Piggott,
  Gosnell, Manila, Hayti, Steele, Leachville, Campbell, Rector,
  Senath, Monette, Caraway, Luxora, Keiser, Chalk Bluff Natural Area
  and Cardwell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3663 8996 3639 8997 3640 8959 3634 8955
      3634 8961 3625 8956 3624 8970 3615 8959
      3600 8973 3581 8971 3574 8995 3567 8994
      3566 8993 3563 8986 3571 9044 3650 9033
      3650 9022 3663 9015

$$
667 
WGUS54 KMEG 301620
FFWMEG
ARC021-031-055-093-MOC069-155-301930-
/O.EXT.KMEG.FF.W.0009.000000T0000Z-170430T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
1120 AM CDT SUN APR 30 2017

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Eastern Greene County in eastern Arkansas...
  Eastern Craighead County in eastern Arkansas...
  Mississippi County in eastern Arkansas...
  Eastern Clay County in eastern Arkansas...
  Pemiscot County in southeastern Missouri...
  Dunklin County in southeastern Missouri...

* Until 230 PM CDT

* At 1120 AM CDT...Doppler Radar estimates 1 to 3 inches of rain has
  occurred over the past 3 hours. Showers and thunderstorms will
  produce an additional 1 to 3 inches of rain over the next 2 hours.

* Some locations that will experience flooding include...
  Blytheville, Kennett, Osceola, Caruthersville, Malden, Piggott,
  Gosnell, Manila, Hayti, Steele, Leachville, Campbell, Rector,
  Senath, Monette, Caraway, Luxora, Keiser, Chalk Bluff Natural Area
  and Cardwell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3663 8996 3639 8997 3640 8959 3634 8955
      3634 8961 3625 8956 3624 8970 3615 8959
      3600 8973 3581 8971 3574 8995 3567 8994
      3566 8993 3563 8986 3571 9044 3650 9033
      3650 9022 3663 9015

$$
617 
WGUS74 KMEG 301857
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
157 PM CDT SUN APR 30 2017

ARC021-031-055-093-MOC069-155-301907-
/O.CAN.KMEG.FF.W.0009.000000T0000Z-170430T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene AR-Craighead AR-Mississippi AR-Clay AR-Pemiscot MO-Dunklin MO-
157 PM CDT SUN APR 30 2017

...THE FLASH FLOOD WARNING FOR EASTERN GREENE...EASTERN CRAIGHEAD...
MISSISSIPPI...EASTERN CLAY...PEMISCOT AND DUNKLIN COUNTIES IS
CANCELLED...

The heavy rain has ended. Please continue to heed any remaining road 
closures.

LAT...LON 3663 8996 3639 8997 3640 8959 3634 8955
      3634 8961 3625 8956 3624 8970 3615 8959
      3600 8973 3581 8971 3574 8995 3567 8994
      3566 8993 3563 8986 3571 9044 3650 9033
      3650 9022 3663 9015

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 8:18 PM CDTSevere Thunderstorm WarningMEGDunklin, Pemiscot57 min
Apr 30, 1:17 AM CDTTornado WarningMEGDunklin43 min
Apr 30, 1:36 AM CDTSevere Thunderstorm WarningMEGDunklin39 min
Apr 30, 1:56 AM CDTSevere Thunderstorm WarningMEGDunklin, Pemiscot49 min
Apr 30, 2:00 AM CDTTornado WarningMEGDunklin, Pemiscot45 min
Apr 30, 2:17 AM CDTWind AdvisoryMEGDunklin, Pemiscot17 hr
Apr 30, 2:27 AM CDTTornado WarningMEGPemiscot48 min
Apr 30, 2:33 AM CDTSevere Thunderstorm WarningMEGPemiscot42 min
Apr 30, 7:22 AM CDTSpecial Weather StatementMEGPemiscot53 min
Apr 30, 2:10 PM CDTAreal Flood WarningMEGDunklin, Pemiscot3 hr
Apr 29, 8:00 PM CDTSevere Thunderstorm WarningMEGCrittenden, Mississippi, Poinsett45 min
Apr 29, 9:29 PM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, St. Francis46 min
Apr 29, 11:51 PM CDTSpecial Weather StatementMEGRandolph39 min
Apr 30, 12:24 AM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene, Lawrence, Randolph51 min
Apr 30, 12:52 AM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene, Lawrence, Poinsett, Randolph53 min
Apr 30, 1:00 AM CDTTornado WarningMEGGreene, Lawrence27 min
Apr 30, 1:05 AM CDTTornado WarningMEGCraighead, Greene40 min
Apr 30, 1:09 AM CDTSevere Thunderstorm WarningMEGClay, Greene, Randolph51 min
Apr 30, 1:15 AM CDTSevere Thunderstorm WarningMEGCraighead, Crittenden, Cross, Lee, Mississippi, Poinsett and 1 more45 min
Apr 30, 1:54 AM CDTSevere Thunderstorm WarningMEGCraighead, Crittenden, Cross, Mississippi, Poinsett, St. Francis51 min
Apr 30, 2:04 AM CDTFlash Flood WarningMEGLawrence12 hr
Apr 30, 2:16 AM CDTSevere Thunderstorm WarningMEGMississippi44 min
Apr 30, 2:24 AM CDTFlash Flood Warning EmergencyMEGClay, Craighead, Greene, Lawrence, Poinsett, Randolph12 hr
Apr 30, 3:25 AM CDTSevere Thunderstorm WarningMEGCross, Lee, St. Francis50 min
Apr 30, 3:34 AM CDTFlash Flood WarningMEGCraighead, Crittenden, Cross, Mississippi, Poinsett, St. Francis9 hr
Apr 30, 3:49 AM CDTSpecial Weather StatementMEGCross41 min
Apr 30, 4:01 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, St. Francis44 min
Apr 30, 4:02 AM CDTSpecial Weather StatementMEGCross43 min
Apr 30, 4:14 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Poinsett31 min
Apr 30, 4:16 AM CDTSpecial Weather StatementMEGSt. Francis44 min
Apr 30, 4:40 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett32 min
Apr 30, 4:58 AM CDTSevere Thunderstorm WarningMEGCraighead, Mississippi, Poinsett14 min
Apr 30, 7:38 AM CDTSpecial Weather StatementMEGCross, Lee, Phillips, St. Francis52 min
Apr 30, 12:44 PM CDTRiver Flood WarningMEGLee, St. Francis9 days
Apr 30, 12:58 PM CDTRiver Flood AdvisoryMEGLee, Phillips4 days

Nearby

Flash Flood Warnings in Arkansas, 2017Flash Flood Warnings in Missouri, 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.