Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 83, NWS Memphis, TN

August 31, 20175 counties in Mississippi; Crittenden County, Arkansas

NWS Memphis, TN issued this flash flood warning at Aug 31, 2017, 3:15 PM CDT for 5 counties in Mississippi; Crittenden County, Arkansas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 31, 2017, 3:15 PM CDT (20:15 UTC)
Expired
Aug 31, 2017, 6:15 PM CDT
In force
3 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Crittenden County, AR, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Tate County, MS

The radar

The Memphis radar (KNQA), 69 km from the middle of the area, began a volume at 20:16 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.

What was reported inside it

TimeReportWhereRemark
Aug 31, 4:10 PM CDTFLASH FLOODSenatobia, MSMAIN STREET HAD 6 TO 10 INCHES OF WATER IMPEDING TRAFFIC.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 8.3 hours before the alert went out and 17 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 2017-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 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 12:00Z on 2017-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 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
20 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

855 
WGUS54 KMEG 312015
FFWMEG
ARC035-MSC033-071-093-107-137-312315-
/O.NEW.KMEG.FF.W.0083.170831T2015Z-170831T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
315 PM CDT THU AUG 31 2017

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  South central Crittenden County in eastern Arkansas...
  Northwestern Lafayette County in northwestern Mississippi...
  Southern DeSoto County in northwestern Mississippi...
  Southwestern Marshall County in northwestern Mississippi...
  Tate County in northwestern Mississippi...
  Northeastern Panola County in northwestern Mississippi...

* Until 615 PM CDT

* At 314 PM CDT...Doppler Radar estimates over an inch of rain has 
  occurred over the past hour. Showers and thunderstorms will 
  produce an additional 1 to 3 inches of rain over the next 3 hours.

* Some locations that will experience flooding include...
  Hernando, Senatobia, Coldwater, Como, Horseshoe Lake, Barr,
  Harmontown, Eudora, Independence, Trinity, Frees Corners, Aiken,
  Crossroad, Tyro, Chulahoma, Glenville, Bruins, Beck, Poagville and
  Bluff.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3470 8962 3446 8956 3447 9009 3473 9008
      3476 9017 3472 9020 3486 9020 3486 9030
      3485 9030 3484 9031 3486 9035 3483 9041
      3495 9041

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 9:45 AM CDTSpecial Weather StatementMEGTate30 min
Aug 31, 9:53 AM CDTTornado WarningMEGTate18 min
Aug 31, 10:17 AM CDTSpecial Weather StatementMEGTunica43 min
Aug 31, 10:31 AM CDTSpecial Weather StatementMEGYalobusha44 min
Aug 31, 10:37 AM CDTSevere Thunderstorm WarningMEGPanola, Yalobusha23 min
Aug 31, 10:51 AM CDTTornado WarningMEGChickasaw, Lee, Pontotoc39 min
Aug 31, 10:55 AM CDTSevere Thunderstorm WarningMEGPanola, Yalobusha50 min
Aug 31, 11:09 AM CDTSevere Thunderstorm WarningMEGLafayette, Marshall38 min
Aug 31, 11:21 AM CDTTornado WarningMEGBenton, Tippah, Union39 min
Aug 31, 11:22 AM CDTTornado WarningMEGBenton53 min
Aug 31, 11:24 AM CDTTornado WarningMEGPanola51 min
Aug 31, 11:29 AM CDTTornado WarningMEGLee, Pontotoc, Union31 min
Aug 31, 11:36 AM CDTTornado WarningMEGPanola, Quitman, Tate, Tunica39 min
Aug 31, 11:40 AM CDTTornado WarningMEGCalhoun, Chickasaw35 min
Aug 31, 11:57 AM CDTTornado WarningMEGTate48 min
Aug 31, 11:58 AM CDTTornado WarningMEGBenton, Pontotoc, Tippah, Union32 min
Aug 31, 12:01 PM CDTTornado WarningMEGBenton, Marshall44 min
Aug 31, 12:03 PM CDTTornado WarningMEGBenton, Tippah42 min
Aug 31, 12:14 PM CDTTornado WarningMEGCalhoun, Chickasaw, Lafayette, Pontotoc31 min
Aug 31, 12:31 PM CDTTornado WarningMEGBenton, Tippah, Union29 min
Aug 31, 12:33 PM CDTTornado WarningMEGPanola, Tate, Tunica42 min
Aug 31, 12:44 PM CDTTornado WarningMEGLafayette, Pontotoc, Union31 min
Aug 31, 12:49 PM CDTTornado WarningMEGDeSoto41 min
Aug 31, 12:55 PM CDTTornado WarningMEGBenton, Tippah50 min
Aug 31, 1:02 PM CDTFlash Flood WarningMEGPanola, Quitman, Tate, Tunica6 hr
Aug 31, 1:07 PM CDTTornado WarningMEGItawamba, Lee38 min
Aug 31, 1:07 PM CDTTornado WarningMEGLee, Pontotoc, Union38 min
Aug 31, 1:23 PM CDTTornado WarningMEGPrentiss52 min
Aug 31, 1:24 PM CDTFlash Flood WarningMEGDeSoto3 hr
Aug 31, 1:37 PM CDTTornado WarningMEGLee, Prentiss, Tippah, Union38 min
Aug 31, 1:57 PM CDTTornado WarningMEGAlcorn18 min
Aug 31, 2:02 PM CDTTornado WarningMEGTippah43 min
Aug 31, 2:12 PM CDTTornado WarningMEGChickasaw, Pontotoc28 min
Aug 31, 2:26 PM CDTTornado WarningMEGTishomingo34 min
Aug 31, 2:36 PM CDTFlash Flood WarningMEGBenton, Marshall, Tippah9 hr
Aug 31, 2:51 PM CDTFlash Flood WarningMEGLafayette, Marshall3 hr
Aug 31, 3:31 PM CDTFlash Flood WarningMEGBenton, DeSoto, Marshall9 hr
Aug 31, 4:32 PM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah28 min
Aug 31, 4:43 PM CDTFlash Flood WarningMEGDeSoto6 hr
Aug 31, 4:59 PM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah26 min
Aug 31, 5:45 PM CDTFlash Flood WarningMEGCoahoma, DeSoto, Lafayette, Marshall, Panola, Quitman and 2 more6 hr
Aug 31, 6:45 AM CDTFlash Flood WarningMEGCrittenden, Cross, Poinsett16 hr
Aug 31, 8:22 AM CDTFlash Flood WarningMEGCraighead, Mississippi, Poinsett3 hr
Aug 31, 8:53 AM CDTFlash Flood WarningMEGCross3 hr
Aug 31, 10:10 AM CDTSpecial Weather StatementMEGLee35 min
Aug 31, 10:53 AM CDTFlash Flood WarningMEGClay3 hr
Aug 31, 11:55 AM CDTFlash Flood WarningMEGCross6 hr
Aug 31, 1:05 PM CDTTornado WarningMEGLee, St. Francis23 min
Aug 31, 2:47 PM CDTFlash Flood WarningMEGCrittenden, St. Francis3 hr
Aug 31, 3:19 PM CDTFlash Flood WarningMEGPhillips3 hr
Aug 31, 5:34 PM CDTFlash Flood WarningMEGCrittenden, Cross, St. Francis6 hr

Nearby

Flash Flood Warnings in Mississippi, 2017Flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.