Alert archive / Tennessee / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 116, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jul 10, 2013, 7:38 PM EDT for 4 counties in Tennessee. It was in force for 37 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
- Jul 10, 2013, 7:38 PM EDT (23:38 UTC)
- Expired
- Jul 10, 2013, 8:15 PM EDT
- In force
- 37 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
Counties Bradley County, TN, Hamilton County, TN, Marion County, TN, Sequatchie County, TN
The radar
The Northeast Alabama radar (KHTX), 81 km from the middle of the area, began a volume at 23:41 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 12:00Z, 11.6 hours before the alert went out and 158 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
- 2277 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- -9 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 Jul 10, 2:42 PM EDT, 4 hours 56 minutes earlier.
Area forecast discussion, Jul 10, 2:42 PM EDT, 4 hours 56 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 242 PM EDT WED JUL 10 2013 .SHORT TERM (TONIGHT THROUGH THURSDAY NIGHT)... A VERY MOIST AIR MASS WILL BE OVER THE AREA TONIGHT AND THURSDAY...UNTIL A COLD FRONT PUSHES INTO THE AREA THURSDAY NIGHT. THROUGH THE AFTERNOON AND EVENING...ONGOING SHOWERS WILL BE MOVING SLOWLY AND PRODUCE LOCALLY HEAVY RAINFALL. THE MAIN CONCERN WILL BE FLASH FLOODING...BUT DO NOT EXPECT WIDESPREAD PROBLEMS WHICH WOULD WARRANT A WATCH AT THIS TIME. AN ISOLATED STORM MAY PRODUCE DAMAGING WIND GUSTS. A MCV FROM EARLIER CONVECTION OVER MO/IL/WRN KY IS NOW TRIGGERING DEVELOPMENT OVER CNTL KY...AND IS SHOWN BY THE MODELS TO CROSS THE AREA LATER TONIGHT...SO STORMS ARE EXPECTED TO CONTINUE THROUGH THE NIGHT. PLENTY OF MOISTURE AND INSTABILITY WILL BE IN PLACE TOMORROW AHEAD OF THE APPROACHING FRONT TO CONTINUE LIKELY POPS AREA WIDE. A LITTLE HIGHER 0-6 KM SHEAR MAY LEAD TO A BETTER SEVERE POTENTIAL TOMORROW AFTERNOON...THOUGH FLOODING POTENTIAL MAY BE LOWER DUE TO FASTER STORM MOTION. THE FRONT AND THE MIDLEVEL TROUGH AXIS MOVE THROUGH 03Z- 09Z FRIDAY...WITH MUCH DRIER AIR BUILDING IN. WILL END ALL POPS BY MIDNIGHT. .LONG TERM (FRIDAY THROUGH WEDNESDAY)... DRY NORTHERLY FLOW BEHIND THURSDAY/S COLD FRONT WILL BRING IN A DRIER...SLIGHTLY COOLER AIR MASS FOR THE WEEKEND. MINIMAL DIURNALLY DRIVEN CONVECTION IS POSSIBLE SATURDAY AND SUNDAY BUT THIS SHOULD REMAIN CONFINED TO HIGHER ELEVATIONS AND MAINLY OVER THE SOUTHEAST. STRONG HIGH PRESSURE OVER THE CENTRAL U.S. WILL SHIFT A BIT NORTHWARD EARLY IN THE WEEK ALLOWING LOW LEVEL MOISTURE TO RETURN TO THE AREA. REMNANTS OF CHANTAL MAY WILL ADD TO THIS MOISTURE INFLUX. THIS WILL AID DEVELOPMENT OF SCATTERED CONVECTION ACROSS THE AREA MONDAY THROUGH WEDNESDAY. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 73 86 67 87 67 / 70 70 20 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 72 84 67 85 64 / 70 70 20 10 10 OAK RIDGE, TN 71 83 65 85 63 / 70 60 20 10 10 TRI CITIES AIRPORT, TN 69 80 62 81 61 / 70 70 30 10 10 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && DGS/MJB
Hazardous weather outlook, Jul 10, 3:42 AM EDT, 15 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 342 AM EDT WED JUL 10 2013 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-110745- 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- 342 AM EDT WED JUL 10 2013 /242 AM CDT WED JUL 10 2013/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT... ...ISOLATED SEVERE THUNDERSTORMS AND LOCALIZED FLASH FLOODING POSSIBLE TODAY AND TONIGHT... A SLOW MOVING COLD FRONT WILL APPROACH THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS TONIGHT. AHEAD OF THE FRONT...TROPICAL- LIKE AIR-MASS WILL REMAIN ACROSS THE REGION THROUGH TONIGHT. AREAS OF SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND CONTINUE THROUGH TONIGHT. SOME OF THESE STORMS THIS AFTERNOON AND EVENING COULD BECOME SEVERE WITH THE MAIN CONCERN BEING DAMAGING WINDS. ALSO...FOR THIS AFTERNOON THROUGH TONIGHT...LOCALIZED HEAVY RAINFALL IS AGAIN POSSIBLE. SINCE THE GROUND IS SATURATED...ANY ADDITIONAL HEAVY RAINS MAY PRODUCE FLASH FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... A COLD FRONT WILL MOVE ACROSS THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS THURSDAY AND THURSDAY NIGHT. WIDESPREAD THUNDERSTORMS ARE EXPECTED THURSDAY AFTERNOON AND EVENING. SOME OF THESE STORMS COULD BECOME SEVERE. THE MAIN CONCERN WILL BE DAMAGING WINDS AND HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING...AND AGAIN ON THURSDAY.
In the hours before
Special weather statement, Jul 10, 5:53 PM EDT, 1 hour 45 minutes before
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</html>Special weather statement, Jul 10, 6:10 PM EDT, 1 hour 28 minutes before
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</html>Special weather statement, Jul 10, 6:27 PM EDT, 1 hour 11 minutes before
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</html>Special weather statement, Jul 10, 6:41 PM EDT, 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 641 PM EDT WED JUL 10 2013 TNZ067-068-071-082>086-099-100-102330- BLEDSOE TN-BRADLEY TN-HAMILTON TN-LOUDON TN-MCMINN TN-MEIGS TN-NORTHWEST MONROE TN-NW BLOUNT TN-RHEA TN-ROANE TN- 641 PM EDT WED JUL 10 2013 ...SIGNIFICANT WEATHER ADVISORY FOR BLOUNT...MONROE...MEIGS... MCMINN...HAMILTON...BRADLEY...EXTREME SOUTHERN BLEDSOE...LOUDON... ROANE AND RHEA COUNTIES UNTIL 730 PM EDT/630 PM CDT/... AT 641 PM EDT/541 PM CDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM KINGSTON TO 9 MILES SOUTH OF ROCKWOOD TO DECATUR TO 8 MILES NORTHWEST OF SODDY-DAISY...AND MOVING EAST AT 25 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...DECATUR...LENOIR CITY...LOUDON...SWEETWATER...ATHENS...MADISONVILLE...MARYVILLE... CHARLESTON...FAIRVIEW...TEN MILE...SALE CREEK...MURRAY STORE...PAINT ROCK...CLEAR WATER...BIRCHWOOD...BIG SPRING...NIOTA...HILLSVIEW... PHILADELPHIA AND RICEVILLE. AMP.23
Local storm report, Jul 10, 6:45 PM EDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
645 PM EDT WED JUL 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0643 PM HEAVY RAIN HAMPTON 36.28N 82.17W
07/10/2013 E2.50 INCH CARTER TN EMERGENCY MNGR
LOCALIZED FLOODING REPORTED NEAR HAMPTON.
&&Local storm report, Jul 10, 7:37 PM EDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
737 PM EDT WED JUL 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0658 PM TSTM WND DMG 4 SSW DAYTON 35.44N 85.04W
07/10/2013 RHEA TN 911 CALL CENTER
ONE TREE DOWN ON BLACK OAK RIDGE ROAD.
&&The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 3:18 PM EDT | Severe Thunderstorm Warning | MRX | Grainger, Hamblen, Jefferson, Knox, Sevier, Union | 57 min |
| Jul 10, 4:09 PM EDT | Severe Thunderstorm Warning | MRX | Hamblen, Hancock, Hawkins | 51 min |
| Jul 10, 5:17 PM EDT | Areal Flood Advisory | MRX | Carter | 118 min |
| Jul 10, 6:33 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Claiborne, Knox, Union | 27 min |
| Jul 10, 6:53 PM EDT | Severe Thunderstorm Warning | MRX | Bledsoe, Bradley, Hamilton, McMinn, Marion, Meigs and 2 more | 52 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2013Every severe thunderstorm warning in 2013
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.