Alert archive / Tennessee / Flash Flood Warnings in 2002
Flash Flood Warning 34, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Sep 21, 2002, 7:38 PM EDT for McMinn County, Tennessee. It was in force for 112 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 21, 2002, 7:38 PM EDT (23:38 UTC)
- Expired
- Sep 21, 2002, 9:30 PM EDT
- In force
- 112 min
- Issued by
- NWS Morristown, TN
- Area
- Counties, with a storm outline in the text
County McMinn County, TN
The radar
The Knoxville radar (KMRX), 137 km from the middle of the area, began a volume at 23:38 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, 11.6 hours before the alert went out and 195 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 635 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KMRX 212338 FFWMRX TNC107-220130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MORRISTOWN TN 734 PM EDT SAT SEP 21 2002 THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A * FLASH FLOOD WARNING FOR... MCMINN COUNTY IN EAST TENNESSEE * UNTIL 930 PM EDT * AT 732 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN NEAR ATHENS...OR 4 MILES SOUTH OF ATHENS. THE THUNDERSTORMS PRODUCING THE FLASH FLOODING WAS MOVING EAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE... ATHENS...CLEAR WATER...NIOTA...ETOWAH...ENGLEWOOD NATIONAL WEATHER SERVICE DOPPLER RADAR HAS ESTIMATED THAT 2 INCHES OF RAIN HAVE FALLEN OVER THE PAST HOUR. AN ADDITIONAL 1 TO 2 INCHES OF RAIN IS POSSIBLE OVER THE NEXT 2 HOURS. AT 730 PM EDT LOCAL LAW ENFORCEMENT REPORTED 2 TO 3 FEET OF WATER OVER SOME OF THE STREETS IN THE CITY OF ATHENS. ALSO...SOME FLOODING OF COUNTY ROADWAYS WERE ALSO REPORTED. 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. 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 3548 8471 3531 8470 3533 8448 3554 8451 $$ DH
1 follow-up statement
000 WGUS74 KMRX 220058 FFSMRX TNC107-220130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 852 PM EDT SAT SEP 21 2002 ...A FLASH FLOOD WARNING CONTINUES FOR MCMINN COUNTY UNTIL 930 PM EDT... AT 852 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE HEAVY RAIN HAS STOPPED. SCATTERED LIGHT TO MODERATE SHOWERS WILL CONTINUE OVER THE AREA WITH ONE=QUARTER INCH OR LESS OF ADDITIONAL RAINFALL ANTICIPATED. HOWEVER...THE THREAT OF FLASH FLOODING STILL EXISTS FROM THE RUNOFF OF THE PREVIOUS HEAVY RAIN. THE SHOWERS WERE MOVING EAST AT 25 MPH. LOCATIONS IN THE WARNING INCLUDE...ATHENS...NIOTA... AT 848 PM EDT LOCAL LAW ENFORCEMENT REPORTED NUMEROUS ROADWAYS ACROSS ATHENS ARE FLOODED AND IMPASSABLE. DECATUR PIKE EAST OF I-40 IS CLOSED. STATE HIGHWAYS 249 AND 169 ARE CLOSED DUE TO HIGH WATER. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. LAT...LON 3548 8474 3536 8459 3540 8453 3560 8454 $$ DH
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 10:07 PM EDT | Severe Thunderstorm Warning | MRX | Bradley | 38 min |
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.