Alert archive / Tennessee / Flash Flood Warnings in 1997

Flash Flood Warning 44, NWS Morristown, TN

June 30, 1997Morgan County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jun 30, 1997, 10:34 PM EDT for Morgan 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 counties it named.

The facts

Issued: Jun 30, 1997, 10:34 PM EDT (02:34 UTC)
Expired: Jul 1, 1997, 1:30 AM EDT
In force: 3 hr
Issued by: NWS Morristown, TN
Area: Whole counties

County Morgan County, TN

The radar

The Knoxville radar (KMRX), 112 km from the middle of the area, began a volume at 02:34 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

Nashville Metro, TN (KBNA), launched 00:00Z, 2.6 hours before the alert went out and 175 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: 47 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 1038 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 101 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.

000 
TTAA00 KMRX 010236
FFWMRX
TNC129-010530-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN
1034 PM EDT (934 PM CDT) MON JUN 30 1997
 
THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  130 AM EDT (1230 AM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST TENNESSEE
 
   ...MORGAN COUNTY
 
HEAVY RAIN HAS FALLEN OVER MUCH OF MORGAN COUNTY THIS EVENING. RADAR
ESTIMATES SHOW THAT BETWEEN 2 AND 3 INCHES OF RAIN HAS FALLEN OVER
NORTHERN SECTIONS OF MORGAN COUNTY NEAR SUNBRIGHT AND APPROXIMATELY
2 INCHES OF RAIN HAS FALLEN OVER THE SOUTHEASTERN PART OF THE COUNTY
AFFECTING AN AREA EXTENDING FROM WARTBURG TO PETROS.
 
NATIONAL WEATHER SERVICE RADAR SHOWS THAT THUNDERSTORMS CONTINUE TO
FORM OVER THE HIGHER TERRAIN AND MOVE NORTHEAST ACROSS THE SOUTHERN
PART OF THE COUNTY AND ADDITIONAL RAIN IS LIKELY AFTER MIDNIGHT AS
A TROUGH OF LOW PRESSURE SHIFTS EAST THROUGH MIDDLE TENNESSEE.
 
STREAMS ARE CLOSE TO EXCEEDING THEIR BANKS AROUND PETROS FROM THE
HEAVY RAIN AND THE ADDITIONAL RAIN WILL CREATE THE POSSIBILITY OF
FLASH FLOODING IN THIS AREA AND OVER THE NORTHERN PART OF THE
COUNTY.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
 
 
"

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before this flash flood warning went out at Jun 30, 8:16 PM EDT, 2 hours 18 minutes earlier.

Area forecast discussion, Jun 30, 8:16 PM EDT, 2 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
815 PM EDT MON JUN 30 1997

FCST PACKAGE LOOKS PRETTY GOOD FOR TONITE AS MASS OF SHRA/TSRA CONTINUES
TO SHIFT E TWD THE FA.  SATELLITE SHOWS WARMING TOPS AND LDS CHART
INDICATES THUNDER IS DECREASING AS THE MASS MOVS INTO SLGTLY MORE
STABLE AIR.  HOPEFULLY THIS SYSTEM KEEPS MOVG ALONG AS ETA MODEL
PROGS INDICATE.  WL WATCH FOR FLASH FLOODING ACRS THE REGION TONITE
AS AREA OF RAIN MOVS E.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 6:30 AM EDT	Flash Flood Warning	MRX	Grainger, Union	4 hr
Jul 1, 3:37 PM EDT	Flash Flood Warning	MRX	Knox	3 hr
Jul 1, 6:45 PM EDT	Flash Flood Warning	MRX	Knox	5 hr

Nearby

Flash Flood Warnings in Tennessee, 1997 Every flash flood warning in 1997

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.