Alert archive / Arkansas / Flash Flood Warnings in 2017

Flash Flood Warning 7, NWS Memphis, TN

April 30, 2017Lawrence County, Arkansas

NWS Memphis, TN issued this flash flood warning at Apr 30, 2017, 2:04 AM CDT for Lawrence County, Arkansas. It was in force for 12 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, 2:04 AM CDT (07:04 UTC)
Expired
Apr 30, 2017, 2:00 PM CDT
In force
12 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

County Lawrence County, AR

The radar

The Memphis radar (KNQA), 141 km from the middle of the area, began a volume at 07:08 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, 7.1 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, 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.

092 
WGUS54 KMEG 300704
FFWMEG
ARC075-301000-
/O.NEW.KMEG.FF.W.0007.170430T0704Z-170430T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Lawrence County in eastern Arkansas...

* Until 500 AM CDT

* At 203 AM CDT...Doppler Radar estimates 3 to 4 inches of rain has 
  occurred over the past 3 hours. Showers and thunderstorms will 
  produce less than one inch of additional rainfall over the next 3 
  hours.

* Some locations that will experience flooding include...
  Walnut Ridge, Hoxie, Black Rock, Lake Charles State Park, College
  City, Portia, Strawberry, Lynn, Alicia, Minturn, Annieville,
  Smithville, Powhatan, Strangers Home, Eaton, Lauratown, Clover
  Bend, Calvin, Dicus and Coffman.

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 3607 9135 3615 9133 3615 9108 3613 9109
      3613 9108 3612 9108 3612 9106 3615 9106
      3615 9088 3589 9102 3589 9136

$$
4 follow-up statements
632 
WGUS54 KMEG 300945
FFWMEG
ARC075-301600-
/O.EXT.KMEG.FF.W.0007.000000T0000Z-170430T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Lawrence County in eastern Arkansas...

* Until 1100 AM CDT Sunday

* At 443 AM CDT...Doppler Radar estimates around 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...
  Walnut Ridge, Hoxie, Black Rock, Lake Charles State Park, College
  City, Portia, Strawberry, Lynn, Alicia, Minturn, Annieville,
  Smithville, Powhatan, Strangers Home, Eaton, Lauratown, Clover
  Bend, Calvin, Dicus and Coffman.

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 3607 9135 3615 9133 3615 9108 3613 9109
      3613 9108 3612 9108 3612 9106 3615 9106
      3615 9088 3589 9102 3589 9136

$$
493 
WGUS74 KMEG 301137
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
637 AM CDT SUN APR 30 2017

ARC075-301600-
/O.CON.KMEG.FF.W.0007.000000T0000Z-170430T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence AR-
637 AM CDT SUN APR 30 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR
LAWRENCE COUNTY...

At 634 AM CDT, National Weather Service Doppler Radar detected rain 
and thunderstorms continuing over Lawrence County. Radar estimates 
that up to 1 inch has fallen since 530 AM, with storm totals in 
excess of 4 inches.

Some locations that will experience flooding include...
Walnut Ridge, Hoxie, Black Rock, Lake Charles State Park, College
City, Portia, Strawberry, Lynn, Alicia, Minturn, Annieville,
Smithville, Powhatan, Strangers Home, Eaton, Lauratown, Clover Bend,
Calvin, Dicus and Coffman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel in Lawrence County this morning, please be 
extremely cautious. 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 3607 9135 3615 9133 3615 9108 3613 9109
      3613 9108 3612 9108 3612 9106 3615 9106
      3615 9088 3589 9102 3589 9136

$$

WOODALL
826 
WGUS54 KMEG 301552
FFWMEG
ARC075-301900-
/O.EXT.KMEG.FF.W.0007.000000T0000Z-170430T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
1052 AM CDT SUN APR 30 2017

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Lawrence County in eastern Arkansas...

* Until 200 PM CDT

* At 1051 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...
  Walnut Ridge, Hoxie, Black Rock, Lake Charles State Park, College
  City, Portia, Strawberry, Lynn, Alicia, Minturn, Annieville,
  Smithville, Powhatan, Strangers Home, Eaton, Lauratown, Clover
  Bend, Calvin, Dicus and Coffman.

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 3607 9135 3615 9133 3615 9108 3613 9109
      3613 9108 3612 9108 3612 9106 3615 9106
      3615 9088 3589 9102 3589 9136

$$
170 
WGUS74 KMEG 301856
FFSMEG

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

ARC075-301906-
/O.EXP.KMEG.FF.W.0007.000000T0000Z-170430T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence AR-
156 PM CDT SUN APR 30 2017

...THE FLASH FLOOD WARNING FOR LAWRENCE COUNTY WILL EXPIRE AT 200 PM
CDT...

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

LAT...LON 3607 9135 3615 9133 3615 9108 3613 9109
      3613 9108 3612 9108 3612 9106 3615 9106
      3615 9088 3589 9102 3589 9136

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 8:00 PM CDTSevere Thunderstorm WarningMEGCrittenden, Mississippi, Poinsett45 min
Apr 29, 8:18 PM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene, Mississippi, Poinsett57 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, 1:17 AM CDTTornado WarningMEGClay, Greene43 min
Apr 30, 1:36 AM CDTSevere Thunderstorm WarningMEGCraighead, Greene, Mississippi39 min
Apr 30, 1:54 AM CDTSevere Thunderstorm WarningMEGCraighead, Crittenden, Cross, Mississippi, Poinsett, St. Francis51 min
Apr 30, 1:56 AM CDTSevere Thunderstorm WarningMEGClay, Greene49 min
Apr 30, 2:00 AM CDTTornado WarningMEGCraighead, Mississippi45 min
Apr 30, 2:16 AM CDTSevere Thunderstorm WarningMEGMississippi44 min
Apr 30, 2:17 AM CDTWind AdvisoryMEGClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more17 hr
Apr 30, 2:24 AM CDTFlash Flood Warning EmergencyMEGClay, Craighead, Greene, Lawrence, Poinsett, Randolph12 hr
Apr 30, 2:27 AM CDTTornado WarningMEGMississippi48 min
Apr 30, 2:32 AM CDTFlash Flood WarningMEGClay, Craighead, Greene, Mississippi11 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
Apr 30, 2:10 PM CDTAreal Flood WarningMEGClay, Craighead, Greene, Lawrence, Mississippi, Randolph3 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.