Alert archive / Tennessee / Flash Flood Warnings in 2002

Flash Flood Warning 2, NWS Morristown, TN

January 23, 20027 counties in Tennessee

NWS Morristown, TN issued this flash flood warning at Jan 23, 2002, 11:32 AM EST for 7 counties in 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
Jan 23, 2002, 11:32 AM EST (16:32 UTC)
Expired
Jan 23, 2002, 2:30 PM EST
In force
3 hr
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Anderson County, TN, Knox County, TN, Loudon County, TN, Meigs County, TN, Morgan County, TN, Rhea County, TN, Roane County, TN

The radar

The Knoxville radar (KMRX), 103 km from the middle of the area, began a volume at 16:36 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 12:00Z, 4.5 hours before the alert went out and 193 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, Nashville Metro, TN at 12:00Z on 2002-01-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Nashville Metro, TN at 12:00Z on 2002-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 531 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
636 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
531 m²/s²
0-3 km storm-relative helicity
502 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 231632
FFWMRX
TNC001-093-105-121-129-143-145-231930-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1129 AM EST WED JAN 23 2002

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ANDERSON COUNTY IN EAST TENNESSEE
  KNOX COUNTY IN EAST TENNESSEE
  LOUDON COUNTY IN EAST TENNESSEE
  MEIGS COUNTY IN EAST TENNESSEE
  MORGAN COUNTY IN EAST TENNESSEE
  RHEA COUNTY IN EAST TENNESSEE
  ROANE COUNTY IN EAST TENNESSEE

* UNTIL 230 PM EST

* AT 1124 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED MODERATE TO HEAVY RAIN OVER THE WARNING AREA. THE AREA
  OF RAIN PRODUCING THE FLASH FLOOD WAS MOVING NORTHEAST AT 35 MPH.

NATIONAL WEATHER SERVICE DOPPLER RADAR HAS ESTIMATED THAT 2 TO 4 
INCHES OF RAIN HAVE FALLEN OVER THE WARNING AREA.  AN ADDITIONAL ONE 
TO TWO INCHES OF RAIN ARE EXPECTED OVER THE NEXT 2 TO 3 HOURS.

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.

$$

SP

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 23, 9:34 AM ESTFlash Flood WarningMRXAnderson, Knox, Loudon, Meigs, Morgan, Rhea and 1 more116 min
Jan 23, 12:14 PM ESTFlash Flood WarningMRXCampbell, Scott3 hr
Jan 23, 1:12 PM ESTFlash Flood WarningMRXMcMinn108 min
Jan 23, 1:19 PM ESTFlash Flood WarningMRXMonroe116 min
Jan 23, 1:51 PM ESTFlash Flood WarningMRXBlount3 hr
Jan 23, 2:30 PM ESTFlash Flood WarningMRXAnderson, Knox, Loudon, Meigs, Morgan, Rhea and 1 more3 hr
Jan 23, 2:57 PM ESTFlash Flood WarningMRXMcMinn3 hr
Jan 23, 3:16 PM ESTFlash Flood WarningMRXCampbell, Monroe, Scott3 hr

Nearby

Flash Flood Warnings in Tennessee, 2002Every flash flood warning in 2002

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.