Alert archive / Tennessee / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Memphis, TN

April 13, 2015Shelby County, Tipton County, Tennessee

NWS Memphis, TN issued this flash flood warning at Apr 13, 2015, 7:56 PM CDT for Shelby County, Tipton County, Tennessee. 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
Apr 13, 2015, 7:56 PM CDT (00:56 UTC)
Expired
Apr 13, 2015, 11:00 PM CDT
In force
3 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 13 km from the middle of the area, began a volume at 00:57 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, 0.9 hours before the alert went out and 65 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 2015-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2015-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

417 
WGUS54 KMEG 140056
FFWMEG
TNC157-167-140400-
/O.NEW.KMEG.FF.W.0013.150414T0056Z-150414T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
756 PM CDT MON APR 13 2015

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL TIPTON COUNTY IN SOUTHWESTERN TENNESSEE...
  NORTHEASTERN SHELBY COUNTY IN SOUTHWESTERN TENNESSEE...

* UNTIL 1100 PM CDT

* AT 755 PM CDT...DOPPLER RADAR ESTIMATES 2 TO 4 INCHES OF RAIN HAS
  OCCURRED OVER THE PAST 3 HOURS. SHOWERS AND THUNDERSTORMS WILL 
  PRODUCE UP TO AN ADDITIONAL INCH OF RAIN OVER THE NEXT 3 HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ATOKA...IDAVILLE...BARRETVILLE...BOLTON...REDWOOD AND ROSEMARK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3544 8969 3533 8968 3531 8981 3541 8983

$$
1 follow-up statement
117 
WGUS74 KMEG 140356
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1056 PM CDT MON APR 13 2015

TNC157-167-140404-
/O.EXP.KMEG.FF.W.0013.000000T0000Z-150414T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TIPTON TN-SHELBY TN-
1056 PM CDT MON APR 13 2015

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL TIPTON AND NORTHEASTERN
SHELBY COUNTIES WILL EXPIRE AT 1100 PM CDT...

THE HEAVY RAIN THREAT IS DIMINISHING ACROSS THE WARNED AREA. 
THUS...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3544 8969 3533 8968 3531 8981 3541 8983

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 8:15 PM CDTFlash Flood WarningMEGShelby, Tipton3 hr
Apr 14, 4:20 AM CDTRiver Flood WarningMEGCrockett, Dyer, Lauderdale15 hr
Apr 14, 10:59 AM CDTRiver Flood AdvisoryMEGShelby4 days

Nearby

Flash Flood Warnings in Tennessee, 2015Every flash flood warning in 2015

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.