Alert archive / Tennessee / Flash Flood Warnings in 2001

Flash Flood Warning 21, NWS Morristown, TN

August 13, 2001Carter County, Tennessee

NWS Morristown, TN issued this flash flood warning at Aug 13, 2001, 10:28 AM EDT for Carter 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
Aug 13, 2001, 10:28 AM EDT (14:28 UTC)
Expired
Aug 13, 2001, 1:30 PM EDT
In force
3 hr
Issued by
NWS Morristown, TN
Area
Whole counties

County Carter County, TN

The radar

The Knoxville radar (KMRX), 115 km from the middle of the area, began a volume at 14:31 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 2.5 hours before the alert went out and 201 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, Greensboro/Hi Pt, NC at 12:00Z on 2001-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 504 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, Greensboro/Hi Pt, NC at 12:00Z on 2001-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
504 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
22 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 
WGUS54 KMRX 131432
FFWMRX
TNC019-131730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1028 AM EDT MON AUG 13 2001

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CARTER COUNTY IN EAST TENNESSEE

* UNTIL 130 PM EDT

* AT 1025 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  THUNDERSTORMS WITH VERY HEAVY RAIN NEAR HAMPTON AND ROANE MOUNTAIN
  THE THUNDERSTORMS PRODUCING THE FLASH FLOOD WAS MOVING EAST AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  RURAL CENTRAL CARTER COUNTY AT 1030 AM EDT

NATIONAL WEATHER SERVICE DOPPLER RADAR HAS ESTIMATED THAT
1 TO 2 INCHES OF RAIN HAVE FALLEN OVER THE PAST 3 HOURS. 
AN ADDITIONAL 1 INCH OF RAIN ARE EXPECTED OVER THE NEXT 
1 HOUR.

AT 1020 AM EDT LOCAL LAW ENFORCEMENT REPORTED THAT THE LITTLE DOE RIVER
AND STONEY CREEK WERE OUT OF THEIR BANKS AND PRODUCING FLOODING ACROSS
THE TOWNS OF HAMPTON AND ROANE MOUNTAIN.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE SOME FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...THIS
STORM WILL CAUSE FLOODING OF COUNTRY ROADS...FARMLANDS...AND OTHER
LOW LYING AREAS THAT ARE SUBJECT TO FLOODING. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

$$

LAT...LON 3634 8224 3618 8227 3619 8200 3637 8205

DH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 7:59 AM EDTFlash Flood WarningMRXGreene3 hr
Aug 13, 8:16 AM EDTFlash Flood WarningMRXCocke3 hr
Aug 13, 9:38 AM EDTFlash Flood WarningMRXUnicoi3 hr

Nearby

Flash Flood Warnings in Tennessee, 2001Every flash flood warning in 2001

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.