Alert archive / Tennessee / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS Memphis, TN

March 15, 2012Chester County, Hardeman County, Madison County, Tennessee

NWS Memphis, TN issued this flash flood warning at Mar 15, 2012, 2:54 PM CDT for Chester County, Hardeman County, Madison County, Tennessee. It was in force for 96 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 15, 2012, 2:54 PM CDT (19:54 UTC)
Expired: Mar 15, 2012, 4:30 PM CDT
In force: 96 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Chester County, TN, Hardeman County, TN, Madison County, TN

The radar

The Memphis radar (KNQA), 106 km from the middle of the area, began a volume at 19:56 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 (KLZK), launched 12:00Z, 7.9 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1212 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 975 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -38 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, in the capitals the NWS used until 2016.

221 
WGUS54 KMEG 151954
FFWMEG
TNC023-069-113-152130-
/O.NEW.KMEG.FF.W.0002.120315T1954Z-120315T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
254 PM CDT THU MAR 15 2012

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHESTER COUNTY IN SOUTHWEST TENNESSEE...
  HARDEMAN COUNTY IN SOUTHWEST TENNESSEE...
  SOUTHEASTERN MADISON COUNTY IN SOUTHWEST TENNESSEE...

* UNTIL 430 PM CDT

* AT 254 PM CDT...DOPPLER RADAR ESTIMATES 1 TO 3 INCHES OF RAINFALL
  HAS OCCURRED OVER THE PAST HOUR. SHOWERS AND THUNDERSTORMS WILL    
  PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAIN.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BOLIVAR...
  HENDERSON...CHICKASAW STATE PARK AND CHICKASAW STATE FOREST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE
USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS
POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING
FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT FLASH FLOODING ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3537 8857 3538 8859 3536 8864 3534 8867
      3532 8866 3532 8868 3530 8870 3504 8914
      3533 8914 3560 8863 3545 8842

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 1:42 PM CDT	Special Weather Statement	MEG	Hardeman	33 min
Mar 15, 1:51 PM CDT	Special Weather Statement	MEG	Fayette	24 min
Mar 15, 2:05 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman	25 min
Mar 15, 2:28 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardeman, Madison	32 min
Mar 15, 2:29 PM CDT	Severe Thunderstorm Warning	MEG	Hardeman	31 min
Mar 15, 2:49 PM CDT	Severe Thunderstorm Warning	MEG	Henry	24 min
Mar 15, 2:50 PM CDT	Severe Thunderstorm Warning	MEG	Henderson	25 min
Mar 15, 2:59 PM CDT	Severe Thunderstorm Warning	MEG	Hardeman	31 min
Mar 15, 3:00 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Henderson, Madison	27 min
Mar 15, 3:07 PM CDT	Severe Thunderstorm Warning	MEG	Decatur, Henderson	26 min
Mar 15, 3:47 PM CDT	Special Weather Statement	MEG	Carroll	28 min
Mar 15, 3:48 PM CDT	Special Weather Statement	MEG	McNairy	27 min
Mar 15, 3:52 PM CDT	Severe Thunderstorm Warning	MEG	Hardeman, McNairy	36 min
Mar 15, 3:55 PM CDT	Severe Thunderstorm Warning	MEG	Carroll	13 min
Mar 15, 4:33 PM CDT	Special Weather Statement	MEG	McNairy	27 min
Mar 15, 4:40 PM CDT	Severe Thunderstorm Warning	MEG	Hardin, McNairy	35 min
Mar 15, 5:14 PM CDT	Severe Thunderstorm Warning	MEG	Hardin	31 min

Nearby

Flash Flood Warnings in Tennessee, 2012 Every flash flood warning in 2012

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.