Flash Flood Warning 37, NWS Nashville, TN

Issued

Feb 27, 1999, 8:30 PM CST (02:30 UTC)

Expired

Feb 27, 1999, 11:25 PM CST

In force

3 hr

Issued by

NWS Nashville, TN

Area

Whole counties

County Lincoln County, TN

The Northeast Alabama radar (KHTX), 52 km from the middle of the area, began a volume at 02:13 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.

000 
TTAA00 KBNA 280232
FFWBNA
TNC003-031-051-103-127-280525-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
830 PM CST SAT FEB 27 1999

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN BEDFORD COUNTY IN MIDDLE TENNESSEE
  COFFEE COUNTY IN MIDDLE TENNESSEE
  NORTHERN FRANKLIN COUNTY IN MIDDLE TENNESSEE
  NORTHERN LINCOLN COUNTY IN MIDDLE TENNESSEE
  MOORE COUNTY IN MIDDLE TENNESSEE

* UNTIL 1125 PM CST

* AT 820 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINFALL CONTINUING OVER SOUTHEASTERN MIDDLE TENNESSEE.
  THE HEAVIEST RAINFALL IS ALONG A LINE FROM NEAR PULASKI TO HOWELL
  IN LINCOLN COUNTY TO TULLAHOMA TO MANCHESTER. LAW ENFORECMENT
  IN THE AREA REPORTS THAT WATER IS PONDING ON ROADS AND CAUSING
  VEHICLES TO HYDROPLANE.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!
MOTORISTS SHOULD SLOW DOWN IN AREAS WHERE WATER IS PONDING
TO PREVENT LOSING CONTROL OF THE VEHICLE.

FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS
IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE
TO STREAMS AND CREEKS WHICH CAN BECOME RAGING TORRENTS IN
A MATTER OF MINUTES. BE PREPARED TO ACT QUICKLY AND MOVE
TO HIGHER GROUND IF RISING WATER THREATENS.

NWS Nashville, TN wrote its last area forecast discussion before this flash flood warning went out at Feb 27, 12:42 PM CST, 7 hours 48 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
1242 PM CST SAT FEB 27 1999

1700 UTC SURFACE ANALYSIS SHOWS COLD FRONT MOVING THROUGH NORTHWEST
ARKANSAS WITH WAVE DEVELOPING OVER WESTERN ARKANSAS/EASTERN OKLAHOMA.
LATEST ADAP DATA SHOWS ATMOSPHERE OVER WESTERN HALF OF MIDDLE
TENNESSEE STARTING TO DESTABILIZE...WITH LIFTED INDICES GENERALLY
BETWEEN 0 AND -2. SCATTERED RAINSHOWERS HAVE MOVED EAST OF INTERSTATE
65.

NGM SHOWS PRECIPITABLE WATER VALUES WILL BE BETWEEN 1.00 AND 1.25
INCHES ACROSS MIDDLE TENNESSEE BY MIDNIGHT WITH A BROAD AREA OF 500
MILLIBAR POSITIVE VORTICITY ADVECTION TIMED WITH THE SURFACE COLD
FRONT.

WITH THESE STRONG 500 MILLIBAR DYNAMICS EXTENDING WELL SOUTH INTO
MISSISSIPPI AND ALABAMA...BELIEVE CHANCES ARE GOOD THAT MIDDLE
TENNESSEE MAY GET CUT OFF FROM GULF FLOW LATER THIS EVENING. NGM ALSO
SHOWS AREAS SOUTH OF THE NASHVILLE FORECAST AREA LOCATED IN THE LEFT
FRONT REGION OF THE 250 MILLIBAR JET MAXIMUM.

WITH SUCH HIGH PRECIPITABLE WATER VALUES AND STRONG PRE-FRONTAL/
FRONTAL LIFTING EXPECTED BETWEEN 0000 AND 0600 UTC...WIDESPREAD HIGH
PRECIPITATION EVENT IS INEVITABLE FOR MIDDLE TENNESSEE. WILL ALSO
INCLUDE MENTION OF THUNDERSTORMS IN ZONE FORECAST...AND WILL NOT RULE
OUT SEVERE POTENTIAL...ALTHOUGH ANY SEVERE EVENTS WE SEE IN MIDDLE
TENNESSEE WILL BE ISOLATED AND GENERALLY SHORT-LIVED.

AGREE WITH NGM TIMING OF FRONTAL PASSAGE AT NASHVILLE SHORTLY AFTER
0600 UTC...AND WITH CURRENT TEMPERATURE RUNNING VERY CLOSE TO MOS
GUIDANCE...WILL TREND TOWARD THE FWC TEMPS FIRST TWO PERIODS...WITH
FAN/FWC IN AGREEMENT PERIODS 3 AND 4.

08

Flash Flood Warnings in Tennessee, 1999Every flash flood warning in 1999

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.