Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 97, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at May 31, 2008, 8:11 PM EDT for Campbell County, Scott County, Tennessee. It was in force for 64 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
- May 31, 2008, 8:11 PM EDT (00:11 UTC)
- Expired
- May 31, 2008, 9:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
Counties Campbell County, TN, Scott County, TN
The radar
The Knoxville radar (KMRX), 87 km from the middle of the area, began a volume at 00:13 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
Nashville Metro, TN (KBNA), launched 00:00Z, 0.2 hours before the alert went out and 206 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
- 2788 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1154 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.1
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 31, 2:38 PM EDT, 5 hours 33 minutes earlier.
Area forecast discussion, May 31, 2:38 PM EDT, 5 hours 33 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 238 PM EDT SAT MAY 31 2008 .SHORT TERM...(TONIGHT AND SUNDAY)...STILL LOWER THAN USUAL CONFIDENCE IN THE SHORT TERM...AS MODEL AGREEMENT POOR. NAM SLOWER WITH CONVECTION MOVING INTO THE AREA...AND KEEPS FOCUS FURTHER SOUTH. THINK NAM LOOKS MORE REASONABLE OVERALL...BUT GIVEN UNCERTAINTY WILL BLEND IN SOME OF THE FASTER MORE NORTHWARD GFS. LOW LEVEL DRYING HAS MOSTLY SUPPRESSED CONVECTION OVER OUR AREA SO FAR...BUT MAY SEE ENOUGH OF A REBOUND TO ALLOW ADDITIONAL ISOLATED TO SCATTERED CONVECTION LATE TODAY AND THIS EVENING...ESPECIALLY NORTHERN AREAS. THEN WILL CARRY CHANCE POPS SOUTHEAST AND CENTRAL...SLIGHT CHANCE NORTHEAST LATER TONIGHT FOR POSSIBLE CONVECTIVE SYSTEM MOVING EAST INTO THE AREA...THEN CHANCE ALL ZONES SUNDAY. GIVEN UNCERTAINTY...WILL NOT TRY TO TIME POPS FOR SUNDAY. WILL STAY CLOSE TO MAV TEMPS. .LONG TERM...(SUNDAY NIGHT THROUGH SATURDAY)...MODELS/SREF IN REASONABLY GOOD AGREEMENT THAT SURFACE BOUNDARY WILL PUSH SOUTH OF THE FORECAST AREA BY EARLY IN THE LONG TERM PERIOD. THUS WILL STAY WITH DRY FORECAST THROUGH MONDAY NIGHT. UPPER RIDGE BEGINS TO BUILD BACK INTO THE REGION BY TUESDAY INDUCING SURFACE BOUNDARY TO RETURN AS WARM FRONT. WRF INDICATES MORE ACTIVITY ASSOCIATED WITH THE SURFACE WARM FRONT THAN THE GFS. STAYED WITH SLIGHT CHANCE TO LOW CHANCE POPS ON TUESDAY IN LIGHT OF THIS DISCREPANCY. REMAINDER OF LONG TERM GENERALLY NONDESCRIPT WITH NO MAJOR SYSTEMS PROJECTED TO AFFECT THE AREA. WITH WEAK FEATURES AND SOME TIMING UNCERTAINTIES...AGAIN DID NOT MAKE ANY SIGNIFICANT CHANGES TO PRECEDING GRIDS/FORECAST. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 67 86 62 87 64 / 40 50 10 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 65 83 60 85 63 / 30 40 10 0 10 OAK RIDGE, TN 65 85 59 87 62 / 30 40 10 0 10 TRI CITIES AIRPORT, TN 61 80 55 83 56 / 30 30 10 10 10 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && LDW/LCM
Hazardous weather outlook, May 31, 2:30 PM EDT, 5 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 230 PM EDT SAT MAY 31 2008 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-011100- CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS- SULLIVAN-JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN- NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE- SOUTHEAST GREENE-WASHINGTON TN-UNICOI-NORTHWEST CARTER- SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON-NW BLOUNT- BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS- SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE- SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE- WISE-SCOTT-RUSSELL-WASHINGTON- 230 PM EDT SAT MAY 31 2008 /130 PM CDT SAT MAY 31 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT A FRONTAL SYSTEM WILL APPROACH THE AREA LATE TODAY AND TONIGHT. THUNDERSTORMS ARE EXPECTED DURING THIS TIME FRAME...SOME OF THE STORMS COULD REACH SEVERE LEVELS. THE MAIN THREAT AT THIS TIME APPEARS TO BE LARGE HAIL AND STRONG GUSTY WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A FRONTAL SYSTEM CONTINUING OVER THE REGION ON SUNDAY WILL KEEP THUNDERSTORM OVER THE AREA. SOME OF THE STORMS COULD REACH SEVERE LEVELS. THE MAIN THREAT AT THIS TIME APPEARS TO BE LARGE HAIL AND STRONG GUSTY WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTERS MAY BE NEED LATE SATURDAY AND SUNDAY.
In the hours before
Special weather statement, May 31, 6:50 PM EDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 650 PM EDT SAT MAY 31 2008 TNZ013-014-312345- CAMPBELL-CLAIBORNE- 650 PM EDT SAT MAY 31 2008 ...A STRONG THUNDERSTORM WILL AFFECT CAMPBELL AND CLAIBORNE COUNTIES THROUGH 745 PM... AT 645 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR JELLICO...MOVING SOUTHEAST AROUND 30 MPH. THIS STORM WILL BE NEAR TAZEWELL BY 735 PM EDT. WINDS UP TO BETWEEN 40 AND 50 MPH...ALONG WITH PEA SIZE HAIL...WILL BE POSSIBLE WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. DMG
Special weather statement, May 31, 7:16 PM EDT, 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 716 PM EDT SAT MAY 31 2008 TNZ082-010015- BLEDSOE- 616 PM CDT SAT MAY 31 2008 ...A STRONG THUNDERSTORM WILL AFFECT BLEDSOE COUNTY THROUGH 715 PM CDT... AT 614 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 11 MILES EAST OF SPENCER...MOVING SOUTHEAST AROUND 25 MPH. WINDS UP TO BETWEEN 40 AND 50 MPH...ALONG WITH PEA SIZE HAIL...WILL BE POSSIBLE WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. PEOPLE IN BLEDSOE COUNTY SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN. DMG
Special weather statement, May 31, 7:22 PM EDT, 49 minutes before
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</html>Special weather statement, May 31, 7:29 PM EDT, 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 729 PM EDT SAT MAY 31 2008 TNZ015-016-010030- HANCOCK-HAWKINS-LEE- 729 PM EDT SAT MAY 31 2008 ...A STRONG THUNDERSTORM WILL AFFECT HANCOCK AND HAWKINS COUNTIES THROUGH 830 PM... AT 725 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12 MILES NORTHEAST OF TAZEWELL...MOVING SOUTHEAST AROUND 25 MPH. THIS STORM WILL BE NEAR... SNEEDVILLE BY 750 PM EDT. SNEEDVILLE BY 755 PM EDT. ROGERSVILLE BY 825 PM EDT. SURGOINSVILLE BY 830 PM EDT. SMALL HAIL AND WINDS UP TO AROUND 40 MPH WILL BE POSSIBLE WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. PEOPLE IN HANCOCK AND HAWKINS COUNTIES SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN. DMG
Special weather statement, May 31, 7:43 PM EDT, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 743 PM EDT SAT MAY 31 2008 TNZ067-083-084-010045- MEIGS-RHEA-ROANE- 743 PM EDT SAT MAY 31 2008 ...A STRONG THUNDERSTORM WILL AFFECT RHEA...MEIGS AND SOUTHERN ROANE COUNTIES THROUGH 845 PM... AT 637 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES NORTH OF SPRING CITY...MOVING SOUTHEAST AROUND 20 MPH. THIS STORM WILL BE NEAR... 5 MILES NORTHEAST OF SPRING CITY BY 750 PM EDT. WINDS UP TO AROUND 40 MPH AND PEA SIZE HAIL WILL BE POSSIBLE WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. PEOPLE IN RHEA...MEIGS AND SOUTHERN ROANE COUNTIES SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN. DMG
Special weather statement, May 31, 7:50 PM EDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 750 PM EDT SAT MAY 31 2008 TNZ012-010045- SCOTT- 750 PM EDT SAT MAY 31 2008 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SCOTT COUNTY THROUGH 845 PM... AT 748 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10 MILES NORTHWEST OF ONEIDA...MOVING SOUTHEAST AROUND 20 MPH. THIS STORM WILL BE NEAR... BIG SOUTH FORK BY 800 PM EDT. 4 MILES NORTH OF ONEIDA BY 825 PM EDT. WINDS UP TO AROUND 40 MPH AND PEA SIZE HAIL WILL BE POSSIBLE WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. PEOPLE IN SCOTT COUNTY SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN. DMG
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:03 PM EDT | Severe Thunderstorm Warning | MRX | Hancock, Hawkins | 42 min |
| Jun 1, 5:50 AM EDT | Severe Thunderstorm Warning | MRX | Bradley, McMinn, Polk | 25 min |
| Jun 1, 6:35 AM EDT | Areal Flood Advisory | MRX | Bradley, Hamilton, Marion | 3 hr |
| Jun 1, 7:55 AM EDT | Severe Thunderstorm Warning | MRX | Greene, Washington | 50 min |
| Jun 1, 10:09 AM EDT | Areal Flood Advisory | MRX | Hamilton, Marion, Sequatchie | 2 hr |
| Jun 1, 10:43 AM EDT | Severe Thunderstorm Warning | MRX | Marion | 47 min |
| Jun 1, 1:18 PM EDT | Areal Flood Advisory | MRX | Marion | 57 min |
| Jun 1, 4:36 PM EDT | Severe Thunderstorm Warning | MRX | Scott | 54 min |
| Jun 1, 5:04 PM EDT | Areal Flood Advisory | MRX | Scott | 116 min |
| Jun 1, 5:30 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Morgan, Scott | 60 min |
| Jun 1, 2:14 PM EDT | Areal Flood Advisory | MRX | Washington | 2 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2008Every severe thunderstorm warning in 2008
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.