Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 49, NWS Memphis, TN

July 1, 20174 counties in Mississippi

NWS Memphis, TN issued this flash flood warning at Jul 1, 2017, 1:24 AM CDT for 4 counties in Mississippi. 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 1, 2017, 1:24 AM CDT (06:24 UTC)
Expired
Jul 1, 2017, 4:30 AM CDT
In force
3 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Itawamba County, MS, Lee County, MS, Pontotoc County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 64 km from the middle of the area, began a volume at 06:24 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, 6.4 hours before the alert went out and 127 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 2017-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 610 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 00:00Z on 2017-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
610 J/kg
Mixed-layer CIN
-209 J/kg
Mixed-layer LCL
1329 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

485 
WGUS54 KMEG 010624
FFWMEG
MSC057-081-115-145-010930-
/O.NEW.KMEG.FF.W.0049.170701T0624Z-170701T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
124 AM CDT SAT JUL 1 2017

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Northeastern Pontotoc County in northeastern Mississippi...
  Southeastern Union County in northeastern Mississippi...
  Northwestern Itawamba County in northeastern Mississippi...
  Northern Lee County in northeastern Mississippi...

* Until 430 AM CDT

* At 123 AM CDT...Doppler Radar estimates 2 to 3 inches of rain has 
  occurred over the past hour. Showers and thunderstorms will 
  produce an additional 1 to 2 inches of rain over the next 3 hours.

* Some locations that will experience flooding include...
  Saltillo, Guntown, Mantachie, Ecru, New Harmony, Pratts Friendship,
  Blair, Sherman, Blue Springs, Cherry Creek, Branyan, Ellistown,
  Eggville, Kirkville, Jug Fork, Wallerville, Chapelville,
  Birmingham, Graves and Frog Island.

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 3433 8848 3432 8904 3444 8903 3446 8862
      3447 8854 3446 8843

$$
1 follow-up statement
098 
WGUS74 KMEG 010921
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
421 AM CDT SAT JUL 1 2017

MSC057-081-115-145-010931-
/O.EXP.KMEG.FF.W.0049.000000T0000Z-170701T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pontotoc MS-Union MS-Itawamba MS-Lee MS-
421 AM CDT SAT JUL 1 2017

...THE FLASH FLOOD WARNING FOR NORTHEASTERN PONTOTOC...SOUTHEASTERN
UNION...NORTHWESTERN ITAWAMBA AND NORTHERN LEE COUNTIES WILL EXPIRE
AT 430 AM 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 3433 8848 3432 8904 3444 8903 3446 8862
      3447 8854 3446 8843

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 3:31 PM CDTSpecial Weather StatementMEGMonroe29 min

Nearby

Flash Flood Warnings in Mississippi, 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.