Alert archive / Tennessee / Flash Flood Warnings in 1998
Flash Flood Warning 15, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Jan 8, 1998, 3:11 AM EST for Unicoi 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 counties it named.
The facts
- Issued
- Jan 8, 1998, 3:11 AM EST (08:11 UTC)
- Expired
- Jan 8, 1998, 6:15 AM EST
- In force
- 3 hr
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Unicoi County, TN
The radar
The Knoxville radar (KMRX), 87 km from the middle of the area, began a volume at 08:11 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.2 hours before the alert went out and 228 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
- 203 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 564 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
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.
NWS Morristown, TN wrote its last area forecast discussion before this flash flood warning went out at Jan 8, 2:53 AM EST, 18 minutes earlier.
Area forecast discussion, Jan 8, 2:53 AM EST, 18 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 253 AM EST THU JAN 8 1998 MEM RECOMMENDATIONS...MAY WANT TO CONTINUE FFW UNTIL AT LEAST NOON FOR NE TN AS ADDITIONAL RAINS EXPECTED. MODELS IN MUCH BETTER AGREEMENT TONIGHT. AT 06Z SFC LOW OVER WESTERN KY AND WILL CONTINUE ITS NORTHWARD TREK. WITH THETA-E RIDGE PRETTY MUCH TO OUR EAST AS WELL AS THE 85H JET THINK THE THREAT FOR HEAVY RAIN HAS ENDED. TODAY...CHC POPS STILL IN ORDER THRU AM FOR CWA WITH BEST CHANCE OVER NE TN. TONIGHT...UPPER TROF/VORT AXIS PIVOT ACRS CWA & FCST SNDGS SHOW STEEP LAPSE RATE. CHC POPS NEEDED TONIGHT AT LEAST. FRIDAY...ZONAL FLOW BEGINNING SO DONT EXPECT ANY PCPN...HOWEVER... WOULD NOT EXPECT ANY BREAKS IN CLOUDS UNTIL LATE AFTERNOON AT BEST AND TEMPS BACK TO SEASONAL LEVELS. TEMPS...PREFER WARMER NGM TEMPS TODAY AND A BLEND THEREAFTER. WS/TG
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 7, 8:08 PM EST | Flash Flood Warning | MRX | Sevier | 6 hr |
| Jan 7, 8:35 PM EST | Flash Flood Warning | MRX | Cumberland, Fentress | 7 hr |
| Jan 7, 8:35 PM EST | Flash Flood Warning | MRX | Hamilton | 7 hr |
| Jan 7, 9:18 PM EST | Flash Flood Warning | MRX | Carter, Johnson, Unicoi | 6 hr |
| Jan 8, 12:45 AM EST | Flash Flood Warning | MRX | Blount | 3 hr |
| Jan 8, 3:11 AM EST | Flash Flood Warning | MRX | Carter, Johnson, Unicoi | 3 hr |
| Jan 8, 3:11 AM EST | Flash Flood Warning | MRX | Carter, Johnson | 3 hr |
| Jan 8, 9:29 AM EST | Flash Flood Warning | MRX | Cocke | 22 hr |
| Jan 8, 5:48 PM EST | Severe Thunderstorm Warning | MRX | Sevier | 42 min |
| Jan 8, 6:22 PM EST | Severe Thunderstorm Warning | MRX | Monroe | 68 min |
| Jan 8, 6:25 PM EST | Severe Thunderstorm Warning | MRX | McMinn | 50 min |
| Jan 8, 6:42 PM EST | Severe Thunderstorm Warning | MRX | Blount | 63 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; radar from the NEXRAD Level II archive.