Alert archive / Tennessee / Flash Flood Warnings in 2003

Flash Flood Warning 2, NWS Morristown, TN

April 30, 2003Campbell County, Tennessee

NWS Morristown, TN issued this flash flood warning at Apr 30, 2003, 6:51 PM EDT for Campbell 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 outline as issued.

The facts

Issued
Apr 30, 2003, 6:51 PM EDT (22:51 UTC)
Expired
Apr 30, 2003, 9:45 PM EDT
In force
3 hr
Issued by
NWS Morristown, TN
Area
Counties, with a storm outline in the text

County Campbell County, TN

The radar

The Knoxville radar (KMRX), 73 km from the middle of the area, began a volume at 22:54 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, 10.9 hours before the alert went out and 225 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 2003-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 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, Nashville Metro, TN at 12:00Z on 2003-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
37 J/kg
Mixed-layer CIN
-257 J/kg
Mixed-layer LCL
1321 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
128 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 302256
FFWMRX
TNC013-010145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
651 PM EDT WED APR 30 2003

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

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

* UNTIL 945 PM EDT

* AT 649 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN NEAR FINCASTLE...OR 6 MILES
  NORTHEAST OF LA FOLLETTE.  THE THUNDERSTORM PRODUCING THE FLASH    
  FLOOD WAS NEARLY STATIONARY. RADAR ESTIMATES OF FOUR TO FIVE       
  INCHES HAS FALLEN IN THE LAST THREE HOURS...ANOTHER ONE TO TWO     
  INCHES IS POSSIBLE IN THE NEXT THREE HOURS.

* LOCATIONS IN THE WARNING INCLUDE...
  FINCASTLE...LA FOLLETTE...JACKSBORO...JELLICO...WHITE OAK

AT 651 PM EDT LOCAL LAW ENFORCEMENT REPORTED FLOODING ALONG DAVIS 
CREEK NEAR CATULA...RUSSELL FORK...AND DUFF.

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 3657 8420 3632 8420 3631 8401 3657 8400

$$

BS/GH
2 follow-up statements
000 
WGUS74 KMRX 010045
FFSMRX
TNC013-010145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
844 PM EDT WED APR 30 2003

...A FLASH FLOOD WARNING CONTINUES FOR CAMPBELL COUNTY UNTIL 945 PM
EDT...

AT 844 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE HEAVY RAIN HAS DIMINISHED.  HOWEVER...THE THREAT OF FLASH  
FLOODING STILL EXISTS FROM THE RUNOFF OF THE PREVIOUS HEAVY RAIN.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS. DO NOT ATTEMPT TO CROSS BRIDGES...
DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.

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 HIGHER GROUND TO ESCAPE FLOOD WATERS.

LAT...LON 3656 8422 3630 8428 3632 8401 3655 8403

$$

GH
000 
WGUS74 KMRX 010128
FFSMRX
TNC013-010145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
924 PM EDT WED APR 30 2003

...THE FLASH FLOOD WARNING FOR CAMPBELL COUNTY HAS BEEN CANCELED...

AT 924 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
RAINFALL HAS ENDED ACROSS THE WARNED AREA...AND THE FLOOD THREAT WAS 
DIMINISHING.  LAW ENFORCEMENT OFFICIALS INDICATED THE WATER HAS 
RECEDED.  SOME MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF 
SERIOUS FLOODING HAS ENDED.  THEREFORE THE FLASH FLOOD WARNING HAS 
BEEN CANCELED.

STAY TUNED TO NOAA WEATHER RADIO...OR OTHER LOCAL MEDIA OUTLETS FOR 
THE LATEST WEATHER INFORMATION.

&

LAT...LON 3656 8422 3630 8428 3632 8401 3655 8403

$$

GH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 9:49 PM EDTSevere Thunderstorm WarningMRXRoane26 min
Apr 29, 9:55 PM EDTSevere Thunderstorm WarningMRXBradley35 min
Apr 29, 10:13 PM EDTSevere Thunderstorm WarningMRXMeigs, Rhea47 min
Apr 29, 10:17 PM EDTSevere Thunderstorm WarningMRXLoudon43 min
Apr 29, 11:09 PM EDTSevere Thunderstorm WarningMRXMcMinn51 min
Apr 29, 11:36 PM EDTSevere Thunderstorm WarningMRXMonroe39 min
Apr 30, 2:16 PM EDTSevere Thunderstorm WarningMRXPolk44 min
Apr 30, 2:28 PM EDTSevere Thunderstorm WarningMRXCarter47 min
Apr 30, 2:34 PM EDTSevere Thunderstorm WarningMRXUnicoi41 min
Apr 30, 2:39 PM EDTSevere Thunderstorm WarningMRXMonroe51 min
Apr 30, 3:03 PM EDTSevere Thunderstorm WarningMRXPolk42 min
Apr 30, 4:11 PM EDTSevere Thunderstorm WarningMRXGreene49 min
Apr 30, 4:40 PM EDTSevere Thunderstorm WarningMRXMorgan65 min
Apr 30, 4:53 PM EDTSevere Thunderstorm WarningMRXBledsoe37 min
Apr 30, 5:29 PM EDTSevere Thunderstorm WarningMRXCampbell46 min
Apr 30, 5:37 PM EDTSevere Thunderstorm WarningMRXHawkins23 min
Apr 30, 6:06 PM EDTSevere Thunderstorm WarningMRXHamilton39 min

Nearby

Flash Flood Warnings in Tennessee, 2003Every flash flood warning in 2003

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.