Alert archive / Tennessee / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 82, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 14, 2010, 4:59 PM EDT for 5 counties in Tennessee. It was in force for 61 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
- Jun 14, 2010, 4:59 PM EDT (20:59 UTC)
- Expired
- Jun 14, 2010, 6:00 PM EDT
- In force
- 61 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
Counties Blount County, TN, Knox County, TN, Loudon County, TN, McMinn County, TN, Monroe County, TN
The radar
The Knoxville radar (KMRX), 92 km from the middle of the area, began a volume at 20:59 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 14, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 9.0 hours before the alert went out and 363 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
- 2890 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jun 14, 2:24 PM EDT, 2 hours 35 minutes earlier.
Area forecast discussion, Jun 14, 2:24 PM EDT, 2 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 224 PM EDT MON JUN 14 2010 .SHORT TERM (TODAY AND TONIGHT)...LARGE UPPER RIDGE STAYS IN PLACE. SERIES OF SHORT WAVES COME OVER THE TOP AD NAUSEUM. SEEMS LIKE THIS HAS BEEN GOING ON FOR MONTHS. EXTREMELY HIGH SFC RH AND MODERATE INSTABILITY GIVE FUEL TO THE MIX. TRIGGER SEEMS TO WARMTH HITTING CONVECIVE TEMPS. GIVEN THAT NEAREST SFC FRONT FOR FOCUS IS WELL TO THE NORTH NEAR THE GREAT LAKES, EXPECT THAT AFTER SUNSET CONVECTION SHOULD DROP OFF GRADUALLY. NAM12 SOUNDINGS DON'T SHOW MUCH IN THE WAY OF MINIMAL DEWPOINT DEPRESSIONS AND AM EXPECTING SOME RESIDUAL CLOUDINESS OVERNIGHT. WILL NOT ADD FOG TO WEATHER OVERNIGHT, AS IT WILL BE PATCHY AT BEST, OCCURRING MAINLY AREAS WHICH RECEIVE HEAVY RAINFALL TODAY AND TONIGHT. .LONG TERM...(TUESDAY NIGHT THROUGH MONDAY)...A SHORT-WAVE WILL MOVE ACROSS THE GREAT LAKES AND THE NORTHEAST THROUGH WEDNESDAY. THIS WAVE WILL PROVIDE ENOUGH EMPHASIS TO MOVE A WEAK BOUNDARY INTO THE FORECAST AREA WEDNESDAY-WEDNESDAY NIGHT. A WEAK RIDGE OF HIGH PRESSURE WILL BUILD INTO THE REGION FOR THURSDAY AND FRIDAY WITH DRIER AIR. WILL CONTINUE WITH ONLY SLIGHT POPS FOR MAINLY THE HIGHER TERRAIN. SURFACE RIDING WILL PULL EAST FOR SATURDAY THROUGH MONDAY WITH RETURN OF DEEPER MOISTURE AND INSTABILITY. FORCING WILL STILL BE LIMITED TO THE TERRAIN FEATURES...SO SLIGHT POPS FOR THE VALLEY AND CHANCE FOR THE HIGHER TERRAIN. UPPER RIDING FOR FRIDAY THROUGH MONDAY...WILL KEEP TEMPERATURES VERY WARM THROUGH THE PERIOD AND WILL FOLLOW MEX MOS CLOSELY...BUT MAY GO A LITTLE HIGHER AT THE END OF THE EXTENDED. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 72 94 71 92 70 / 40 40 20 40 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 71 93 72 90 67 / 40 40 20 40 20 OAK RIDGE, TN 72 92 71 91 66 / 40 40 20 40 20 TRI CITIES AIRPORT, TN 69 91 67 89 62 / 50 40 30 40 20 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && BB/DH
Hazardous weather outlook, Jun 14, 5:30 AM EDT, 11 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 530 AM EDT MON JUN 14 2010 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-151000- 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- 530 AM EDT (430 AM CDT) MON JUN 14 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT A HOT AND VERY HUMID AIR MASS WILL HELP TO TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS TODAY...WITH A FEW ISOLATED STORMS POSSIBLY BECOMING STRONG TO SEVERE THIS AFTERNOON AND EVENING. THE MAIN THREATS WILL BE THE POSSIBILITY OF DAMAGING WINDS...LOCALLY HEAVY RAINFALL...AND CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A TYPICAL SUMMERTIME PATTERN WILL CONTINUE ACROSS THE REGION THIS WEEK...WITH A FEW ISOLATED STRONG TO SEVERE STORMS POSSIBLE EACH DAY. THE MAIN THREATS THROUGHOUT THE PERIOD WILL CONTINUE TO BE THE POSSIBILITY OF DAMAGING WINDS...LOCALLY HEAVY RAINFALL...AND CLOUD TO GROUND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE ISOLATED NATURE OF THE EXPECTED SEVERE THREAT. DMG
In the hours before
Local storm report, Jun 14, 2:43 PM EDT, 2 hours 16 minutes before
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</html>Local storm report, Jun 14, 2:59 PM EDT, 2 hours before
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</html>Local storm report, Jun 14, 3:31 PM EDT, 1 hour 28 minutes before
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</html>Special weather statement, Jun 14, 4:18 PM EDT, 41 minutes before
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</html>The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 2:29 PM EDT | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan | 61 min |
| Jun 14, 3:07 PM EDT | Severe Thunderstorm Warning | MRX | Carter, Greene, Hancock, Hawkins, Unicoi, Washington | 38 min |
| Jun 14, 3:12 PM EDT | Severe Thunderstorm Warning | MRX | Bradley, McMinn, Polk | 45 min |
| Jun 14, 3:40 PM EDT | Areal Flood Advisory | MRX | Hawkins | 3 hr |
| Jun 14, 4:28 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Blount, Campbell, Claiborne, Knox, Loudon and 4 more | 62 min |
| Jun 14, 5:09 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Hamblen, Hawkins, Jefferson, Knox and 2 more | 66 min |
| Jun 14, 5:14 PM EDT | Areal Flood Advisory | MRX | Meigs, Roane | 2 hr |
| Jun 14, 5:28 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 47 min |
| Jun 14, 6:10 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Jefferson, Sevier | 65 min |
| Jun 14, 6:55 PM EDT | Severe Thunderstorm Warning | MRX | Greene | 23 min |
| Jun 14, 12:56 PM EDT | Severe Thunderstorm Warning | MRX | Lee, Russell, Scott, Wise | 64 min |
| Jun 14, 1:48 PM EDT | Severe Thunderstorm Warning | MRX | Russell, Scott, Washington | 57 min |
| Jun 14, 2:42 PM EDT | Areal Flood Advisory | MRX | Washington, City of Bristol | 3 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2010Every severe thunderstorm warning in 2010
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.