Alert archive / Tennessee / Flash Flood Warnings in 1998
Flash Flood Warning 29, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Apr 16, 1998, 11:20 PM EDT for Anderson County, Roane County, Tennessee. It was in force for 5 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
- Apr 16, 1998, 11:20 PM EDT (03:20 UTC)
- Expired
- Apr 17, 1998, 4:20 AM EDT
- In force
- 5 hr
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
Counties Anderson County, TN, Roane County, TN
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.3 hours before the alert went out and 291 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
- 1217 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 573 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 3.0
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMRX 170321 FFWMRX TNC001-145-170820- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1120 PM EDT THU APR 16 1998 THE NATIONAL WEATHER SERVICE IN KNOXVILLE/TRI-CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... ANDERSON COUNTY IN EASTERN TENNESSEE ROANE COUNTY IN EASTERN TENNESSEE * UNTIL 420 AM EDT * AT 1115 PM EDT... SPOTTERS INDICATED THAT CLUSTERS OF THUNDERSTORMS WITH VERY HEAVY RAIN WERE LOCATED OVER ROANE AND ANDERSON COUNTIES.. . MOVING NORTHEAST AT 40 MPH. * EXCESSIVE RAINFALL AT THE RATE OF 1 INCH PER HOUR WILL PRODUCE FLOODING ACROSS THROUGHOUT BOTH COUNTIES THROUGH 425 AM EDT. STORM SPOTTERS REPORT A LEVY HAS BROKEN BXETWEEN ROCKWOOD AND OLIVER SPRINGS..CLOSING HIGHWAY 61. DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. HSA &
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 Apr 16, 10:20 PM EDT, 1 hour earlier.
Area forecast discussion, Apr 16, 10:20 PM EDT, 1 hour before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1020 PM EDT THU APR 16 1998 BUSY MORNING WITH SEVERE CONVECTION MOVING IN FROM MIDDLE TN AND NEW STUFF FORMING OVER CWA. MODIFIED BNA SOUNDING LOOKS LIKE MORE OF A TORNADO SOUNDING AS CELLS MOVE DUE EAST INCREASING HELICITY LOCALLY. PARTS OF LINEAR CONVECTION WILL HAVE MORE STRAIGHT LINE WIND DAMAGE. IN ADDITION...NEARLY SATURATED SOUNDING WITH PW OF 1.42 AT BNA WILL RESULT IN FLOODING OF VARIOUS DEGREES AS ECHOES TRAIN. MOST WILL BE URBAN/SMALL STREAM FLOODING WITH ISOLATED FFW EXPECTED LATER. DO NOT RECOMMEND FFA ATTM...AS FLORA HAS THICKENED CONSIDERABLY AND BLV FLOODING WILL BE MORE SPOTTY THAN WIDESPREAD TODAY. TONIGHT MAY BE ANOTHER STORY AS SEVERE CONVECTION WEAKENS AND TEMP/DP SPREADS NARROW. AGREE WITH TEMPS AND POPS IN ZONES...WE MAY BE A LITTLE COOLER THAN FORCAST IN NORTHERN ZONES AS CLOUDS KEEP SUN OUT...BUT DONT BELV AN UPDATE IS IN ORDER. GOTTA RUN. BB
In the hours before
Local storm report, Apr 16, 7:35 PM EDT, 3 hours 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
735 PM EDT THU APR 16 1998
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
425 PM NEAR HARROGATE TN WIND DAMAGE
04/16/98 CLAIBORNE TREES DOWN AND POWER LINES
DOWN NEAR HARROGATE
1 NURSING HOME ALSO DAMAGED
NEAR HARROGATE
435 PM NEAR JONESVILLE VA 0.75 INCH HAIL
04/16/98 LEE
540 PM NEAR JONESVILLE VA WIND DAMAGE
04/16/98 LEE 5 FOOT TREE UPROOTED 3 MILES
WEST OF HIGHWAY 58
445 PM TN 0.75 INCH HAIL
04/16/98 HAMILTON DIME SIZE HAIL REPORTED
COUNTY-WIDE
525 PM CLEVELAND TN 1.00 INCH HAIL
04/16/98 BRADLEY QUARTER SIZE HAIL REPORTED
IN DOWNTOWN CLEVELAND
545 PM TN 0.75 INCH HAIL
04/16/98 MCMINN DIME SIZE HAIL REPORTED IN
NORTHEAST MCMINN COUNTY
548 PM TN 0.75 INCH HAIL
04/16/98 MEIGS DIME SIZE HAIL REPORTED NEAR
DECATUR IN MEIGS COUNTY
540 PM WOLF CREEK AREA TN TORNADO
04/16/98 RHEA POSSIBLE TORNADO TOUCHDOWN
REPORTED IN THE WOLF CREEK
AREA
540 PM TN 1.00 INCH HAIL
04/16/98 RHEA QUARTER SIZE HAIL REPORTED
NEAR THE RHEA COUNTY AIRPORT
540 PM TN WIND DAMAGE
04/16/98 RHEA NUMEROUS TREES DOWN
COUNTY-WIDE
530 PM TN 0.75 INCH HAIL
04/16/98 MEIGS DIME SIZE HAIL REPORTED
COUNTY-WIDE
530 PM NEAR KINGSPORT TN WIND DAMAGE
04/16/98 SULLIVAN TREES DOWN IN THE KINGSPORT
AREA
545 PM NEAR KINGSTON TN WIND DAMAGE
04/16/98 ROANE TREES DOWN NEAR KINGSTON
608 PM TN 0.75 INCH HAIL
04/16/98 KNOX DIME SIZE HAIL REPORTED ON
WATTS ROAD IN WESTERN KNOX
COUNTY
610 PM TN 1.00 INCH HAIL
04/16/98 KNOX ONE-INCH DIAMETER HAIL
REPORTED IN WESTERN KNOX
COUNTY
620 PM TELLICO MOUNTAIN TN 1.00 INCH HAIL
04/16/98 MONROE QUARTER SIZE HAIL REPORTED
NEAR TELLICO MOUNTAIN
615 PM TN WIND DAMAGE
04/16/98 MONROE TREES DOWN IN THE SOUTHERN
PART OF MONROE COUNTY
630 PM NEAR HIGHWAY 70 TN 1.00 INCH HAIL
04/16/98 CUMBERLAND QUARTER SIZE HAIL REPORTED
ON HIGHWAY 70
650 PM TN WIND DAMAGE
04/16/98 CUMBERLAND ROOF WAS BLOWN OFF A HOME
NUMEROUS TREES UPROOTED IN
THE SOUTHERN PART OF
CUMBERLAND COUNTY
700 PM TN WIND DAMAGE
04/16/98 MORGAN TREES DOWN AND ROOF DAMAGE
IN THE NORTHERN PART OF
MORGAN COUNTYThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 8:02 PM EDT | Tornado Warning | MRX | Hancock | 63 min |
| Apr 16, 8:06 PM EDT | Severe Thunderstorm Warning | MRX | Loudon, Roane | 59 min |
| Apr 16, 8:20 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 65 min |
| Apr 16, 8:37 PM EDT | Severe Thunderstorm Warning | MRX | Cumberland | 63 min |
| Apr 16, 8:50 PM EDT | Severe Thunderstorm Warning | MRX | Jefferson, Sevier | 65 min |
| Apr 16, 9:01 PM EDT | Tornado Warning | MRX | Hamblen, Jefferson | 64 min |
| Apr 16, 9:27 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Greene | 63 min |
| Apr 16, 9:32 PM EDT | Severe Thunderstorm Warning | MRX | Morgan | 48 min |
| Apr 16, 9:38 PM EDT | Tornado Warning | MRX | Meigs, Rhea | 62 min |
| Apr 16, 9:53 PM EDT | Flash Flood Warning | MRX | Anderson, Campbell, Claiborne, Union | 6 hr |
| Apr 16, 9:55 PM EDT | Severe Thunderstorm Warning | MRX | Campbell | 50 min |
| Apr 16, 10:51 PM EDT | Severe Thunderstorm Warning | MRX | Hamilton | 64 min |
| Apr 16, 11:24 PM EDT | Severe Thunderstorm Warning | MRX | Meigs, Rhea | 61 min |
| Apr 16, 11:24 PM EDT | Severe Thunderstorm Warning | MRX | Bradley | 61 min |
| Apr 16, 11:36 PM EDT | Tornado Warning | MRX | Bradley | 34 min |
| Apr 16, 11:41 PM EDT | Tornado Warning | MRX | McMinn | 49 min |
| Apr 16, 11:54 PM EDT | Severe Thunderstorm Warning | MRX | Loudon, Monroe, Roane | 61 min |
| Apr 16, 11:54 PM EDT | Tornado Warning | MRX | Blount, Loudon | 46 min |
| Apr 17, 12:10 AM EDT | Flash Flood Warning | MRX | Loudon | 3 hr |
| Apr 17, 12:17 AM EDT | Severe Thunderstorm Warning | MRX | Polk | 63 min |
| Apr 17, 12:35 AM EDT | Flash Flood Warning | MRX | Knox | 3 hr |
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.