Alert archive / Tennessee / Flash Flood Warnings in 2007

Flash Flood Warning 13, NWS Memphis, TN

October 18, 2007Madison County, Tennessee

NWS Memphis, TN issued this flash flood warning at Oct 18, 2007, 12:17 AM CDT for Madison County, Tennessee. It was in force for 118 min. 3 reports 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
Oct 18, 2007, 12:17 AM CDT (05:17 UTC)
Expired
Oct 18, 2007, 2:15 AM CDT
In force
118 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

County Madison County, TN

The radar

The Memphis radar (KNQA), 103 km from the middle of the area, began a volume at 05:20 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
Oct 18, 12:20 AM CDTFLASH FLOODJackson, TN2.09 INCHES OF RAINFALL IN PAST 55 MINUTES
Oct 18, 12:20 AM CDTHEAVY RAIN 0Jackson, TN2.09 INCHES OF RAINFALL IN PAST 55 MINUTES
Oct 18, 12:50 AM CDTFLASH FLOODJackson, TNASHCROFT ROAD FLOODED AND HEAVY RAIN FALLING

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 (KLZK), launched 00:00Z, 5.3 hours before the alert went out and 139 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 2007-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 2007-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 square meters per square second.1939587897Sfc1 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
18 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
1339 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMEG 180519
FFWMEG
TNC113-180715-
/O.NEW.KMEG.FF.W.0013.071018T0517Z-071018T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
1217 AM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MADISON COUNTY IN SOUTHWEST TENNESSEE...

* UNTIL 215 AM CDT

* AT 1217 AM CDT...LOCAL EMERGENCY MANAGEMENT OFFICIALS REPORTED VERY
  HEAVY RAIN OVER THE WARNED AREA. 2 TO 3 INCHES OF RAINFALL HAS     
  FALLEN ACROSS THE WARNED AREA. THE INTERSECTION OF HENDERSON ROAD  
  AND RIDGECREST ROAD HAD AT LEAST TWO FEET OF WATER OVER THE        
  ROADWAY. FRAMWOOD ROAD ALSO HAD MAJOR FLOODING REPORTED. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FAIRVIEW...
  SPRING CREEK...MERCER...JACKSON...BEMIS AND ADAIR.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

.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 3579 8861 3577 8860 3558 8860 3548 8868
      3543 8880 3544 8907 3569 8906 3568 8901
      3578 8890 3580 8891

$$
1 follow-up statement
000 
WGUS74 KMEG 180713
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
212 AM CDT THU OCT 18 2007

TNC113-180722-
/O.EXP.KMEG.FF.W.0013.000000T0000Z-071018T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON TN-
212 AM CDT THU OCT 18 2007

...THE FLASH FLOOD WARNING WILL EXPIRE AT 215 AM CDT FOR MADISON
COUNTY...

THE HEAVY RAINFALL WHICH PROMPTED THE WARNING HAS DIMINISHED OR
EXITED THE WARNED AREA. THUS THE FLASH FLOOD WARNING HAS BEEN ALLOWED
TO EXPIRE.

LAT...LON 3579 8861 3577 8860 3558 8860 3548 8868
      3543 8880 3544 8907 3569 8906 3568 8901
      3578 8890 3580 8891
TIME...MOT...LOC 0712Z 180DEG 0KT 3564 8882

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 17, 10:15 PM CDTSevere Thunderstorm WarningMEGFayette30 min
Oct 17, 10:44 PM CDTSevere Thunderstorm WarningMEGFayette, Hardeman, Haywood, Madison46 min
Oct 17, 11:30 PM CDTSevere Thunderstorm WarningMEGHardeman, Haywood, Madison45 min
Oct 18, 3:50 AM CDTTornado WarningMEGLauderdale, Tipton39 min
Oct 18, 6:37 PM CDTSevere Thunderstorm WarningMEGLauderdale, Tipton38 min
Oct 18, 6:57 PM CDTSevere Thunderstorm WarningMEGLake33 min

Nearby

Flash Flood Warnings in Tennessee, 2007Every flash flood warning in 2007

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.