Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 39, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Apr 3, 1998, 4:02 PM EST for Morgan County, Roane County, Tennessee. It was in force for 28 min. 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 3, 1998, 4:02 PM EST (21:02 UTC)
- Expired
- Apr 3, 1998, 4:30 PM EST
- In force
- 28 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
Counties Morgan County, TN, Roane County, TN
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 3, 2:00 PM EST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 9.0 hours before the alert went out and 182 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
- 888 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 46 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 032105 RRA SVRMRX TNC129-145-032130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN 402 PM EST (302 PM CST) FRI APR 3 1998 THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM EST (330 PM CST) FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST TENNESSEE ...SOUTHERN MORGAN COUNTY...NORTHERN ROANE COUNTY AT 402 EST DOPPLER RADAR INDICATED A DANGEROUS THUNDERSTORM ALONG THE MORGAN - ROANE COUNTY LINE 2 MILES NORTH OF ROCKWOOD. THIS STORM WILL BE IN HARRIMAN BY 415 PM EST. IF YOU ARE IN THE PATH OF THIS STORM TAKE ACTION IMMEDIATELY. A TORNADO WATCH IS ALSO IN "EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 3, 2:25 PM EST, 1 hour 37 minutes earlier.
Area forecast discussion, Apr 3, 2:25 PM EST, 1 hour 37 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 225 PM EST FRI APR 3 1998 WL NEED TO BE BRIEF AS TSTMS ARE QUICKLY FIRING UP AND SITUATION WL CONT TO DVLP RAPIDLY. TOR WATCH NOW IN EFFECT TIL 01Z FOR PLATEAU/SE TN/WRN VALLEY COUNTIES. SVR WX LIKELY AS NMRS INGREDIENTS COMING TGTHR FOR LARGE OUTBREAK. NOT MUCH CHG FM 00Z MODELS XCPT THAT ETA IS NOW A BIT FASTER AND MORE IN LINE W/NGM. SFC LOW WL RACE DUE E ALONG KY/TN BRDR THIS EVE W/COLD FNT XTNDG S FM LOW. XPCT FROPA IN CWA ARND 03-06Z. SOME LINGERING LGT RAIN PSBL IN NE TN/SW VA THRU SAT MORN..AND INTO EARLY AFTN IN SW VA. FCST SNDGS INDICATE SOME BRKS PSBL IN SE TN/SW NC. RIDGING SFC & ALOFT SAT NGT & SUN ACRS CWA WL DRY THINGS OUT AND CLR OUT THE CLDS. XPCTG MSTLY CLR SAT NGT..MSTLY SUNNY SUNDAY. FWC TEMPS LOOK GOOD THRU THE PD. HSA
In the hours before
Special weather statement, Apr 3, 10:54 AM EST, 5 hours 8 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005- 006-008-040000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1054 AM EST FRI APR 3 1998 ...VIOLENT TORNADOES POSSIBLE THIS AFTERNOON AND EVENING ACROSS SOUTHEAST TENNESSEE... ...SEVERE WEATHER LIKELY THIS AFTERNOON AND EARLY THIS EVENING ACROSS THE REMAINDER OF EAST TENNESSEE..AS WELL AS SOUTHWEST NORTH CAROLINA... AND SOUTHWEST VIRGINIA... A WARM FRONT OVER NORTHERN SECTIONS OF ALABAMA AND GEORGIA WILL LIFT NORTH THIS AFTERNOON. THIS WILL ALLOW WARM..MOIST AND EXTREMELY UNSTABLE AIR TO SPREAD INTO MUCH OF EAST TENNESSEE AND SOUTHWEST NORTH CAROLINA. THUNDERSTORMS WILL ERUPT IN THIS AIRMASS LATER THIS AFTERNOON AND EARLY EVENING. THE MAIN SEVERE WEATHER THREAT WILL BE VIOLENT TORNADOES. LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS ARE ALSO LIKELY. LOCALIZED FLASH FLOODING AND URBAN FLOODING IS ALSO POSSIBLE IN HEAVY RAIN-PRODUCING THUNDERSTORMS. THE BEST THREAT FOR SEVERE WEATHER WILL BE GENERALLY ACROSS SOUTHEAST TENNESSEE AND SOUTHWEST NORTH CAROLINA..ROUGHLY SOUTH OF A CROSSVILLE TO KNOXVILLE LINE. HOWEVER..SEVERE THUNDERSTORMS WILL STILL BE POSSIBLE IN NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA. A COLD FRONT WILL SWEEP THROUGH THE AREA AROUND MIDNIGHT..ENDING THE SEVERE WEATHER THREAT. REMEMBER..A SEVERE WEATHER WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER TO FORM AND IS ISSUED FOR A LARGE AREA. A WARNING MEANS SEVERE WEATHER IS OCCURRING AND IS ISSUED FOR A SPECIFIC COUNTY. A SEVERE THUNDERSTORM IS DEFINED AS A THUNDERSTORM THAT PRODUCES DIME-SIZE HAIL OR LARGER AND/OR PRODUCES WINDS 58 MPH OR HIGHER. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION EMERGENCY MANAGEMENT OFFICIALS AND SPOTTER GROUPS WILL LIKELY BE ACTIVATED THIS AFTERNOON. AREA RESIDENTS NEED TO CLOSELY MONITOR NOAA WEATHER RADIO..LOCAL TV AND RADIO STATIONS FOR LATER STATEMENTS AND POSSIBLE SEVERE WEATHER WATCHES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE THIS AFTERNOON. HSA
Special weather statement, Apr 3, 10:54 AM EST, 5 hours 8 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005- 006-008-040000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1054 AM EST FRI APR 3 1998 ...VIOLENT TORNADOES POSSIBLE THIS AFTERNOON AND EVENING ACROSS SOUTHEAST TENNESSEE... ...SEVERE WEATHER LIKELY THIS AFTERNOON AND EARLY THIS EVENING ACROSS THE REMAINDER OF EAST TENNESSEE..AS WELL AS SOUTHWEST NORTH CAROLINA... AND SOUTHWEST VIRGINIA... A WARM FRONT OVER NORTHERN SECTIONS OF ALABAMA AND GEORGIA WILL LIFT NORTH THIS AFTERNOON. THIS WILL ALLOW WARM..MOIST AND EXTREMELY UNSTABLE AIR TO SPREAD INTO MUCH OF EAST TENNESSEE AND SOUTHWEST NORTH CAROLINA. THUNDERSTORMS WILL ERUPT IN THIS AIRMASS LATER THIS AFTERNOON AND EARLY EVENING. THE MAIN SEVERE WEATHER THREAT WILL BE VIOLENT TORNADOES. LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS ARE ALSO LIKELY. LOCALIZED FLASH FLOODING AND URBAN FLOODING IS ALSO POSSIBLE IN HEAVY RAIN-PRODUCING THUNDERSTORMS. THE BEST THREAT FOR SEVERE WEATHER WILL BE GENERALLY ACROSS SOUTHEAST TENNESSEE AND SOUTHWEST NORTH CAROLINA..ROUGHLY SOUTH OF A CROSSVILLE TO KNOXVILLE LINE. HOWEVER..SEVERE THUNDERSTORMS WILL STILL BE POSSIBLE IN NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA. A COLD FRONT WILL SWEEP THROUGH THE AREA AROUND MIDNIGHT..ENDING THE SEVERE WEATHER THREAT. REMEMBER..A SEVERE WEATHER WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER TO FORM AND IS ISSUED FOR A LARGE AREA. A WARNING MEANS SEVERE WEATHER IS OCCURRING AND IS ISSUED FOR A SPECIFIC COUNTY. A SEVERE THUNDERSTORM IS DEFINED AS A THUNDERSTORM THAT PRODUCES DIME-SIZE HAIL OR LARGER AND/OR PRODUCES WINDS 58 MPH OR HIGHER. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION EMERGENCY MANAGEMENT OFFICIALS AND SPOTTER GROUPS WILL LIKELY BE ACTIVATED THIS AFTERNOON. AREA RESIDENTS NEED TO CLOSELY MONITOR NOAA WEATHER RADIO..LOCAL TV AND RADIO STATIONS FOR LATER STATEMENTS AND POSSIBLE SEVERE WEATHER WATCHES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE THIS AFTERNOON. HSA
Special weather statement, Apr 3, 10:55 AM EST, 5 hours 7 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005- 006-008-040000- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1055 AM EST FRI APR 3 1998 ...VIOLENT TORNADOES POSSIBLE THIS AFTERNOON AND EVENING ACROSS SOUTHEAST TENNESSEE... ...SEVERE WEATHER LIKELY THIS AFTERNOON AND EARLY THIS EVENING ACROSS THE REMAINDER OF EAST TENNESSEE..AS WELL AS SOUTHWEST NORTH CAROLINA... AND SOUTHWEST VIRGINIA... A WARM FRONT OVER NORTHERN SECTIONS OF ALABAMA AND GEORGIA WILL LIFT NORTH THIS AFTERNOON. THIS WILL ALLOW WARM..MOIST AND EXTREMELY UNSTABLE AIR TO SPREAD INTO MUCH OF EAST TENNESSEE AND SOUTHWEST NORTH CAROLINA. THUNDERSTORMS WILL ERUPT IN THIS AIRMASS LATER THIS AFTERNOON AND EARLY EVENING. THE MAIN SEVERE WEATHER THREAT WILL BE VIOLENT TORNADOES. LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS ARE ALSO LIKELY. LOCALIZED FLASH FLOODING AND URBAN FLOODING IS ALSO POSSIBLE IN HEAVY RAIN-PRODUCING THUNDERSTORMS. THE BEST THREAT FOR SEVERE WEATHER WILL BE GENERALLY ACROSS SOUTHEAST TENNESSEE AND SOUTHWEST NORTH CAROLINA..ROUGHLY SOUTH OF A CROSSVILLE TO KNOXVILLE LINE. HOWEVER..SEVERE THUNDERSTORMS WILL STILL BE POSSIBLE IN NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA. A COLD FRONT WILL SWEEP THROUGH THE AREA AROUND MIDNIGHT..ENDING THE SEVERE WEATHER THREAT. REMEMBER..A SEVERE WEATHER WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER TO FORM AND IS ISSUED FOR A LARGE AREA. A WARNING MEANS SEVERE WEATHER IS OCCURRING AND IS ISSUED FOR A SPECIFIC COUNTY. A SEVERE THUNDERSTORM IS DEFINED AS A THUNDERSTORM THAT PRODUCES DIME-SIZE HAIL OR LARGER AND/OR PRODUCES WINDS 58 MPH OR HIGHER. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION EMERGENCY MANAGEMENT OFFICIALS AND SPOTTER GROUPS WILL LIKELY BE ACTIVATED THIS AFTERNOON. AREA RESIDENTS NEED TO CLOSELY MONITOR NOAA WEATHER RADIO..LOCAL TV AND RADIO STATIONS FOR LATER STATEMENTS AND POSSIBLE SEVERE WEATHER WATCHES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE THIS AFTERNOON. HSA
Special weather statement, Apr 3, 10:55 AM EST, 5 hours 7 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005- 006-008-040000- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1055 AM EST FRI APR 3 1998 ...VIOLENT TORNADOES POSSIBLE THIS AFTERNOON AND EVENING ACROSS SOUTHEAST TENNESSEE... ...SEVERE WEATHER LIKELY THIS AFTERNOON AND EARLY THIS EVENING ACROSS THE REMAINDER OF EAST TENNESSEE..AS WELL AS SOUTHWEST NORTH CAROLINA... AND SOUTHWEST VIRGINIA... A WARM FRONT OVER NORTHERN SECTIONS OF ALABAMA AND GEORGIA WILL LIFT NORTH THIS AFTERNOON. THIS WILL ALLOW WARM..MOIST AND EXTREMELY UNSTABLE AIR TO SPREAD INTO MUCH OF EAST TENNESSEE AND SOUTHWEST NORTH CAROLINA. THUNDERSTORMS WILL ERUPT IN THIS AIRMASS LATER THIS AFTERNOON AND EARLY EVENING. THE MAIN SEVERE WEATHER THREAT WILL BE VIOLENT TORNADOES. LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS ARE ALSO LIKELY. LOCALIZED FLASH FLOODING AND URBAN FLOODING IS ALSO POSSIBLE IN HEAVY RAIN-PRODUCING THUNDERSTORMS. THE BEST THREAT FOR SEVERE WEATHER WILL BE GENERALLY ACROSS SOUTHEAST TENNESSEE AND SOUTHWEST NORTH CAROLINA..ROUGHLY SOUTH OF A CROSSVILLE TO KNOXVILLE LINE. HOWEVER..SEVERE THUNDERSTORMS WILL STILL BE POSSIBLE IN NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA. A COLD FRONT WILL SWEEP THROUGH THE AREA AROUND MIDNIGHT..ENDING THE SEVERE WEATHER THREAT. REMEMBER..A SEVERE WEATHER WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER TO FORM AND IS ISSUED FOR A LARGE AREA. A WARNING MEANS SEVERE WEATHER IS OCCURRING AND IS ISSUED FOR A SPECIFIC COUNTY. A SEVERE THUNDERSTORM IS DEFINED AS A THUNDERSTORM THAT PRODUCES DIME-SIZE HAIL OR LARGER AND/OR PRODUCES WINDS 58 MPH OR HIGHER. THIS IS A POTENTIALLY DANGEROUS WEATHER SITUATION EMERGENCY MANAGEMENT OFFICIALS AND SPOTTER GROUPS WILL LIKELY BE ACTIVATED THIS AFTERNOON. AREA RESIDENTS NEED TO CLOSELY MONITOR NOAA WEATHER RADIO..LOCAL TV AND RADIO STATIONS FOR LATER STATEMENTS AND POSSIBLE SEVERE WEATHER WATCHES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE THIS AFTERNOON. HSA
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 4:16 PM EST | Tornado Warning | MRX | Meigs, Rhea | 44 min |
| Apr 3, 4:17 PM EST | Severe Thunderstorm Warning | MRX | Anderson | 43 min |
| Apr 3, 4:45 PM EST | Severe Thunderstorm Warning | MRX | Knox, Union | 45 min |
| Apr 3, 5:00 PM EST | Tornado Warning | MRX | Bradley, Hamilton | 45 min |
| Apr 3, 5:08 PM EST | Severe Thunderstorm Warning | MRX | Claiborne, Grainger | 67 min |
| Apr 3, 5:37 PM EST | Severe Thunderstorm Warning | MRX | Hamblen, Hancock, Hawkins | 53 min |
| Apr 3, 5:37 PM EST | Severe Thunderstorm Warning | MRX | Blount, Knox | 38 min |
| Apr 3, 5:46 PM EST | Severe Thunderstorm Warning | MRX | Fentress | 44 min |
| Apr 3, 5:47 PM EST | Tornado Warning | MRX | Blount, Knox | 28 min |
| Apr 3, 5:52 PM EST | Tornado Warning | MRX | Fentress | 53 min |
| Apr 3, 5:55 PM EST | Tornado Warning | MRX | Sevier | 35 min |
| Apr 3, 5:56 PM EST | Severe Thunderstorm Warning | MRX | Monroe | 34 min |
| Apr 3, 6:08 PM EST | Tornado Warning | MRX | Jefferson | 37 min |
| Apr 3, 6:08 PM EST | Tornado Warning | MRX | Cumberland | 52 min |
| Apr 3, 6:23 PM EST | Tornado Warning | MRX | Hamilton, Meigs, Rhea | 52 min |
| Apr 3, 6:25 PM EST | Severe Thunderstorm Warning | MRX | Cocke, Greene | 65 min |
| Apr 3, 6:25 PM EST | Severe Thunderstorm Warning | MRX | Sullivan | 65 min |
| Apr 3, 6:31 PM EST | Severe Thunderstorm Warning | MRX | Scott | 44 min |
| Apr 3, 6:31 PM EST | Tornado Warning | MRX | Cocke | 29 min |
| Apr 3, 6:35 PM EST | Severe Thunderstorm Warning | MRX | McMinn | 40 min |
| Apr 3, 6:45 PM EST | Severe Thunderstorm Warning | MRX | Washington | 60 min |
| Apr 3, 6:47 PM EST | Severe Thunderstorm Warning | MRX | Morgan, Roane | 58 min |
| Apr 3, 6:47 PM EST | Severe Thunderstorm Warning | MRX | Campbell | 58 min |
| Apr 3, 6:49 PM EST | Severe Thunderstorm Warning | MRX | Cumberland | 26 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1998Every severe thunderstorm 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.