Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 61, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at May 7, 1999, 5:05 PM EDT for Johnson County, Tennessee. It was in force for 50 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 7, 1999, 5:05 PM EDT (21:05 UTC)
- Expired
- May 7, 1999, 5:55 PM EDT
- In force
- 50 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Johnson County, TN
The radar
The Knoxville radar (KMRX), 142 km from the middle of the area, began a volume at 21:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 7, 5:15 PM EDT | Hail 0.75 | Mountain City, TN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 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 May 7, 2:29 PM EDT, 2 hours 36 minutes earlier.
Area forecast discussion, May 7, 2:29 PM EDT, 2 hours 36 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 229 PM EDT FRI MAY 7 1999 SATELLITE SHOWS TWO DISTINCT S/WV ROTATING TOWARD THE SOUTHERN APPALACHIANS. FIRST WAVE IS OVER W KS/MO AND THE OTHER MORE SIGNIFICANT WAVE IS MOVING ACROSS AR. THESE FEATURES ARE DEPICTED QUITE WELL BY THE RUC AND ETA/NGM MODELS. THESE WAVES WILL MOVE ACROSS THE REGION LATE TODAY AND OVERNIGHT. ALREADY...HTX AND MRX RADARS ARE SHOWING AN INCREASE IN SHOWERS AND THUNDERSTORMS OVER NORTHERN GEORGIA INTO WESTERN NORTH CAROLINA AND SOUTHEAST TENNESSEE. MODELS SHOW THIS COVERAGE OF CONVECTION MOVING NORTHEAST INTO SOUTHWEST VIRGINIA AND NORTHEAST TENNESSEE LATE THIS AFTERNOON AND EVENING. WILL HAVE GOOD/LIKELY CHANCES OF SHOWERS AND THUNDERSTORMS...MAINLY BEFORE MIDNIGHT. DUE TO THE RELATIVELY HIGH PW AND SOME TRAINING OF CELLS... LOCALLLIZED FLASH FLOODING IS POSSIBLE. ALSO...ISOLATED SEVERE THREAT WITH MAIN PROBLEM BEING MARGINAL SEVERE HAIL AND DOWNBURST WINDS. DEPENDING ON HOW SOON STORMS AND CLOUDS MOVE OUT...ANOTHER ROUND OF MORNING FOG IS A DISTINCT POSSIBILITY. SOME OF THE FOG COULD BE LOCALLY DENSE. SHORT-WAVE WILL EXIT THE AREA BY SATURDAY MORNING ALLOWING DRIER AIR TO FILTER INTO THE REGION PRODUCING A MOSTLY SUNNY DAY FOR TOMORROW. ANOTHER WEAKER S/WV WITH LIMITED MOISTURE WILL MOVE ACROSS THE TENNESSEE VALLEY FOR LATE SATURDAY NIGHT AND SUNDAY MORNING. WILL CALL FOR PARTLY CLOUDY SKIES...BUT KEEP PRECIPITATION CHANCES OUT OF THE FORECAST. SKY WILL BECOMING MOSTLY SUNNY AGAIN BY SUNDAY AFTERNOON AS WAVE PASSES. THE FOLLOWING NUMBERS ARE FOR COORDINATION PURPOSES ONLY: CHA UU 053/080 052/085 055 15300 TYS UB 052/077 052/081 054 15400 TRI UB 050/073 049/077 051 15600 OQT UB 051/078 051/081 053 15300 DH
In the hours before
Special weather statement, May 7, 2:02 PM EDT, 3 hours 3 minutes before
NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005- 006-008-080400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 202 PM EDT FRI MAY 7 1999 ...THUNDERSTORMS WITH GUSTY WINDS AND VERY HEAVY RAINS FRIDAY AFTERNOON AND EVENING... A COLD FRONT LYING ACROSS THE TENNESSEE VALLEY FROM SOUTHWEST TO NORTHEAST...TOGETHER WITH AN UPPER AIR DISTURBANCE IS TRIGGERING THUNDERSTORMS OVER NORTHERN GEORGIA AND WESTERN NORTH CAROLINA. THESE STORMS ARE MOVING INTO SOUTHEAST TENNESSEE AND WILL AFFECT THE GREAT SMOKY MOUNTAINS. GENERALLY...THESE STORMS WILL PRODUCE DANGEROUS LIGHTNING...VERY HEAVY RAIN...AND STRONG GUSTY WINDS. AN ISOLATED THUNDERSTORM MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. AS THE UPPER AIR DISTURBANCE APPROACHES THE AREA FROM THE WEST... THUNDERSTORMS WILL INCREASE IN COVERAGE AND STRENGTH. MOST OF THE STORMS WILL EXIT NORTHEAST TENNESSEE AND EXTREME SOUTHWEST VIRGINIA AFTER MIDNIGHT. STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD BE PREPARED FOR ACTIVATION. PLEASE PAY ATTENTION TO NOAA WEATHER RADIO...AND COMMERCIAL TELEVISION AND RADIO FOR THE LATEST INFORMATION. BB
Special weather statement, May 7, 2:02 PM EDT, 3 hours 3 minutes before
NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005- 006-008-080400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 202 PM EDT FRI MAY 7 1999 ...THUNDERSTORMS WITH GUSTY WINDS AND VERY HEAVY RAINS FRIDAY AFTERNOON AND EVENING... A COLD FRONT LYING ACROSS THE TENNESSEE VALLEY FROM SOUTHWEST TO NORTHEAST...TOGETHER WITH AN UPPER AIR DISTURBANCE IS TRIGGERING THUNDERSTORMS OVER NORTHERN GEORGIA AND WESTERN NORTH CAROLINA. THESE STORMS ARE MOVING INTO SOUTHEAST TENNESSEE AND WILL AFFECT THE GREAT SMOKY MOUNTAINS. GENERALLY...THESE STORMS WILL PRODUCE DANGEROUS LIGHTNING...VERY HEAVY RAIN...AND STRONG GUSTY WINDS. AN ISOLATED THUNDERSTORM MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. AS THE UPPER AIR DISTURBANCE APPROACHES THE AREA FROM THE WEST... THUNDERSTORMS WILL INCREASE IN COVERAGE AND STRENGTH. MOST OF THE STORMS WILL EXIT NORTHEAST TENNESSEE AND EXTREME SOUTHWEST VIRGINIA AFTER MIDNIGHT. STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD BE PREPARED FOR ACTIVATION. PLEASE PAY ATTENTION TO NOAA WEATHER RADIO...AND COMMERCIAL TELEVISION AND RADIO FOR THE LATEST INFORMATION. BB
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 3:01 PM EDT | Severe Thunderstorm Warning | MRX | Grainger, Hamblen, Jefferson | 64 min |
| May 7, 3:01 PM EDT | Severe Thunderstorm Warning | MRX | Sevier | 64 min |
| May 7, 3:24 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan, Washington | 61 min |
| May 7, 3:38 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Hancock | 62 min |
| May 7, 3:51 PM EDT | Severe Thunderstorm Warning | MRX | Unicoi | 64 min |
| May 7, 4:03 PM EDT | Tornado Warning | MRX | Hancock | 62 min |
| May 7, 4:06 PM EDT | Severe Thunderstorm Warning | MRX | Blount, Knox | 64 min |
| May 7, 4:17 PM EDT | Severe Thunderstorm Warning | MRX | Johnson | 48 min |
| May 7, 4:39 PM EDT | Severe Thunderstorm Warning | MRX | Carter | 51 min |
| May 7, 4:42 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Union | 63 min |
| May 7, 5:22 PM EDT | Severe Thunderstorm Warning | MRX | Bradley | 48 min |
| May 7, 6:33 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Knox | 47 min |
| May 7, 2:51 PM EDT | Severe Thunderstorm Warning | MRX | Cherokee | 49 min |
| May 7, 4:10 PM EDT | Severe Thunderstorm Warning | MRX | Clay | 30 min |
| May 7, 5:35 PM EDT | Flash Flood Warning | MRX | Cherokee | 4 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; radar from the NEXRAD Level II archive.