Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 181, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jul 7, 2008, 3:24 PM EDT for Hawkins County, Tennessee. It was in force for 36 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 7, 2008, 3:24 PM EDT (19:24 UTC)
- Expired
- Jul 7, 2008, 4:00 PM EDT
- In force
- 36 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
County Hawkins County, TN
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.4 hours before the alert went out and 276 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
- 238 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 887 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 64 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 7, 2:37 PM EDT, 47 minutes earlier.
Area forecast discussion, Jul 7, 2:37 PM EDT, 47 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 237 PM EDT MON JUL 7 2008 .SHORT TERM...(TONIGHT AND TUESDAY)...MODELS AND SREF NOW SHOW OHIO VALLEY MCS REMAINING RELATIVELY INTACT THROUGH THIS AFTERNOON AND POSSIBLY EFFECTING AT LEAST THE NORTHERN HALF OF THE FORECAST AREA DURING THE FIRST PERIOD. AS SUCH...WILL GO WITH HIGH CHANCE POPS ALONG THE NORTHERN TIER DECREASING TO SLIGHT CHANCE IN THE SOUTHERN TIER. BOUNDARIES LEFT OVER FROM CONVECTIVE COMPLEX WILL LIKELY PROVIDE FOCUS FOR SOME REDEVELOPMENT TOMORROW AFTERNOON. THUS APPEARS HIGH CHANCE POPS PROJECTED BY MODEL GUIDANCE IS WARRANTED. FOR TEMPS...FOLLOWED MAV GUIDANCE CLOSELY WITH THE EXCEPTION OF A FEW TWEAKS TO BUMP UP MAX TEMPS IN SOME SPOTS. .LONG TERM...(TUESDAY NIGHT THROUGH MONDAY)... A SURFACE FRONT AND A MIDLEVEL SHORTWAVE TROUGH WILL MOVE OVER THE OHIO VALLEY ON WEDNESDAY. 850 MB THETA-E RIDGE WILL BE OVER THE AREA WEDNESDAY AFTERNOON...AND UPPER DIVERGENCE WILL ALSO BE INCREASING AS THE 300 MB JET PUSHES EAST. WILL HAVE HIGH CHANCE POPS FOR WEDNESDAY. THE GFS IS AGGRESSIVE IN PUSHING THE FRONT THROUGH THE AREA AND BRINGING A DRIER AIR MASS INTO THE AREA FOR THURSDAY...HOWEVER THIS IS LIKELY OVERDONE GIVEN THE STRENGTH OF THE ATLANTIC RIDGE...AND THE NAM KEEPS THE FRONT WELL TO OUR NORTH...SO WILL KEEP CHANCE POPS IN FOR THURSDAY. THE REST OF THE FORECAST LOOKS LIKE A TYPICAL SUMMER TIME PATTERN...WITH THE ATLANTIC RIDGE EXTENDING EAST ACROSS THE GULF COAST...AND A ZONAL FLOW ALOFT. SMALL SHORTWAVES MAY PASS THROUGH EACH DAY...BUT THESE FEATURES ARE TOO SMALL TO RESOLVE THIS FAR OUT. WILL FOLLOW CLIMATOLOGY AND PERSISTENCE...AND HAVE DIRUNAL POPS EACH DAY THROUGH TUESDAY. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 68 92 71 91 71 / 20 20 20 40 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 68 88 71 87 71 / 30 40 30 40 40 OAK RIDGE, TN 68 88 70 87 70 / 30 40 30 50 40 TRI CITIES AIRPORT, TN 62 83 66 84 66 / 50 50 40 50 40 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && LCM/DGS
Hazardous weather outlook, Jul 7, 6:07 AM EDT, 9 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 607 AM EDT MON JUL 7 2008 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-081015- 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- 607 AM EDT MON JUL 7 2008 /507 AM CDT MON JUL 7 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Jul 7, 2:46 PM EDT, 38 minutes before
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</html>Local storm report, Jul 7, 3:09 PM EDT, 15 minutes before
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</html>Special weather statement, Jul 7, 3:21 PM EDT, 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 321 PM EDT MON JUL 7 2008 TNZ016-017-042-044-072000- HAWKINS-NORTHWEST GREENE-SULLIVAN-WASHINGTON- 321 PM EDT MON JUL 7 2008 ...A STRONG THUNDERSTORM WILL BE AFFECTING GREENE...HAWKINS... SULLIVAN AND WASHINGTON COUNTIES... AT 318 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR SURGOINSVILLE...MOVING EAST AT 29 MPH. THIS STORM WILL BE NEAR... 6 MILES SOUTH OF COLONIAL HEIGHTS BY 355 PM EDT. DIME SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...CONTINUOUS 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. DGS
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 11:54 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Greene | 66 min |
| Jul 7, 1:37 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Union | 38 min |
| Jul 7, 1:45 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne | 45 min |
| Jul 7, 6:06 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne | 39 min |
| Jul 6, 9:48 PM EDT | Severe Thunderstorm Warning | MRX | Russell | 57 min |
| Jul 6, 9:50 PM EDT | Areal Flood Advisory | MRX | Russell | 69 min |
| Jul 7, 6:53 PM EDT | Severe Thunderstorm Warning | MRX | Lee, Scott | 53 min |
| Jul 6, 10:49 PM EDT | Severe Thunderstorm Warning | MRX | Cherokee, Clay | 56 min |
| Jul 6, 11:45 PM EDT | Severe Thunderstorm Warning | MRX | Cherokee, Clay | 45 min |
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.