Alert archive / Tennessee / Flash Flood Warnings in 1998
Flash Flood Warning 98, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Jun 22, 1998, 7:47 PM EDT for Sullivan County, Tennessee. It was in force for 4 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
- Jun 22, 1998, 7:47 PM EDT (23:47 UTC)
- Expired
- Jun 22, 1998, 11:50 PM EDT
- In force
- 4 hr
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Sullivan County, TN
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.8 hours before the alert went out and 221 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
- 147 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMRX 222348 FFWMRX TNC163-230350- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 747 PM EDT MON JUN 22 1998 THE NATIONAL WEATHER SERVICE IN KNOXVILLE/TRI-CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... WESTERN SULLIVAN COUNTY IN EASTERN TENNESSEE * UNTIL 1150 PM EDT * AT 747 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT CLUSTERS OF THUNDERSTORMS WITH VERY HEAVY RAIN WERE LOCATED OVER WESTERN SULLIVAN COUNTY... MOVING SOUTHEAST AT 20 MPH. * EXCESSIVE RAINFALL AT THE RATE OF EXCEEDING 1 INCH AN HOUR WILL PRODUCE FLOODING ACROSS WESTERN SULLIVAN COUNTY THROUGH 1150 PM EDT. STREET FLOODING ACROSS KINGSPORT IS LIKELY.T..SO DRIVE WITH CAUTION. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! HSA/DH
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.
NWS Morristown, TN wrote its last area forecast discussion before this flash flood warning went out at Jun 22, 7:30 PM EDT, 17 minutes earlier.
Area forecast discussion, Jun 22, 7:30 PM EDT, 17 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 730 PM EDT MON JUN 22 1998 A COMPLEX OF SHOWERS AND THUNDERSTORMS OVER NRN/ERN KY CONTINUES TO MOVE EAST SOUTHEAST TOWARD SW VA/NE TN/NRN PLATEAU. AMS ACROSS THE CWA REMAINS MOIST AND UNSTABLE WITH ADAP DEPICTING LI'S OF -7 TO -9 AND CAPES RANGING FROM 2500 TO 4000 J/KG. WOULD SUGGEST UPPING POPS TO LIKELY FOR CSV TO TYS NORTH (INCLUDING SW VA) AND 30 PERCENT FOR SE TN. ALSO...ADD 20-30 POPS FOR FAR SW NC. MAIN THREAT FROM THESE STORMS WILL BE TORRENTIAL RAINS/LOCALLIZED FLASH FLOODING AND DAMAGING DOWNBURSTS WINDS DUE TO THE MID-LVL DRY AIR. ONLY MARGINAL SVR HAIL ANTICIPATED DUE TO HIGH WBZ. WOULD SUGGEST INCLUDING LOCALLY HEAVY RAINFALL IN THE PUBLIC FCST. DH
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 9:56 PM EDT | Severe Thunderstorm Warning | MRX | Monroe | 64 min |
| Jun 22, 6:50 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Knox, Union | 35 min |
| Jun 22, 7:01 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan | 49 min |
| Jun 22, 7:35 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 65 min |
| Jun 22, 7:57 PM EDT | Severe Thunderstorm Warning | MRX | Greene | 48 min |
| Jun 22, 7:58 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne | 62 min |
Nearby
Flash Flood Warnings in Tennessee, 1998Every flash flood warning in 1998
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.