Alert archive / Tennessee / Flash Flood Warnings in 1989
Flash Flood Warning 1, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Mar 5, 1989, 11:07 PM EST for Roane County, Tennessee. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Mar 5, 1989, 11:07 PM EST (04:07 UTC)
- Expired
- Mar 6, 1989, 2:15 AM EST
- In force
- 3 hr
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Roane County, TN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 4.1 hours before the alert went out and 189 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
- 488 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 468 m²/s²
- 0-3 km storm-relative helicity
- 636 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Mar 5, 5:49 PM EST, 5 hours 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BRISTOL TN 545 PM EST SUN MAR 5 1989 ..FLASH FLOOD WATCH TONIGHT FOR NORTHEAST TENNESSEE.. ..FLASH FLOOD WATCH TONIGHT AND EARY MONDAY FOR SOUTHWEST VIRGINIA... RAIN AND A FEW HEAVY THUNDERSTORMS ARE TO THE SOUTHWEST OF THE LOCAL AREA AND WILL MOVE IN LATER TONIGHT. A FLASH FLOOD WATCH MEANS CODITIONS ARE FAVARABLE FOR FLASH FLOODING TO DEVELOP IN THE WATCH AREA. PEOPLE IN THE AFFECTED AR#EA SHOULD STAY INFORMED AND BE READY FOR QUICK ACTION IF FLOODING OCCURS OR A WARNING IS ISSUED.
Special weather statement, Mar 5, 6:44 PM EST, 4 hours 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE TN 645 PM EST SUN MAR 5 1989 ...FLASH FLOOD WATCH IN EFFECT FOR MIDDLE EAST TENNESSEE... RAIN AND THUNDERSTORMS ARE MOVING INTO THE EAST TENNESSEE VALLEY. SOME OF THESE THUNDERSTORMS HAVE THE POTENTIAL FOR PRODUCING HEAVY RAINFALL RATES IN A SHORT PERIOD OF TIME. WITH THE GROUND ALREADY SOAKED FROM THE PREVIOUS WEEKS RAINFALL FLASH FLOODING IS A GOOD POSSIBILITY. PERSONS DRIVING IN THESE AREAS SHOULD BE ALERT TO RAPIDLY RISING WATER ON ROADWAYS OR OVER BRIDGES. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST UPDATES OR POSSIBLE WARNINGS.
Special weather statement, Mar 5, 9:13 PM EST, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE TN 915 PM EST SUN MAR 5 1989 ...FLASH FLOOD WATCH IN EFFECT FOR MIDDLE EAST TENNESSEE... MODERATE RAIN WITH A FEW THUNDERSTORMS FROM THE CUMBERLAND PLATEAU TO EAST OF KNOXVILLE CONTINUE AT THIS TIME. RAIN FALL AMOUNTS IN THE SURROUNDING COUNTIES ARE RUNNING AROUND ONE HALF TO ONE INCH. THE POTENTIAL FOR FLASH FLOODING IS BECOMING DANGEROUSLY CLOSE. IF YOU ARE NEAR ANY AREA THAT HAS BEEN PRONE TO FLOODING IN THE PAST YOU SHOULD BE ALERT TO THE QUICKLY RISING WATERS AND PREPARE TO MOVE TO A PLACE OF SAFETY. ALSO CITY FLOODING CAN OCCUR IN ANY TERRAIN AND IS AGGRAVATED BY LOST NATURAL COVER DUE TO URBANIZATION. ROADS AND PARKING LOTS AND AREAS OF CONSTRUCTION ARE VERY PRONE TO FLOODING. FLASH FLOOD WAVES CAN MOVE AT INCREDIBLE SPEEDS AND CAN ROLL BOULDERS AND TEAR DOWN TREES. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES AND POSSIBLE WARNINGS.
Special weather statement, Mar 5, 10:14 PM EST, 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BRISTOL TN 1015 PM EST SUN MAR 5 1989 ..FLASH FLOOD WATCH TONIGHT FOR NORTHEAST TENNESSEE.. ..FLASH FLOOD WATCH TONIGHT AND EARY MONDAY FOR SOUTHWEST VIRGINIA... AN AREA OF RAIN AND A FEW THUNDERSTORMS WAS MOVING INTO NORTHEAST TENNESSEE AND WESTERN VIRGINIA. RAINFALL AMOUNTS OF UP TO 2 TO 3 INCHES IS POSSIBLE TONIGHT WHICH COULD CAUSE LOCAL FLOODING. A FLASH FLOOD WATCH MEANS CODITIOGNS ARE FAVARABLE FOR FLASH FLOODING TO DEVELOP IN THE WATCH AREA. PEOPLE IN THE AFFECTED AREA SHOULD STAY INFORMED AND BE READY FOR QUICK ACTION IF FLOODING OCCURS OR A WARNING IS ISSUED.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 11:48 PM EST | Flash Flood Warning | MRX | Morgan | 3 hr |
| Mar 6, 12:52 AM EST | Flash Flood Warning | MRX | Scott | 2 hr |
Nearby
Flash Flood Warnings in Tennessee, 1989Every flash flood warning in 1989
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.