Alert archive / Tennessee / Winter Storm Warnings in 2009
Winter Storm Warning 3, NWS Morristown, TN
NWS Morristown, TN issued this winter storm warning at Apr 6, 2009, 12:24 PM EDT for 8 counties in Tennessee; Lee County, Wise County, City of Norton, Virginia. It took effect at Apr 6, 2009, 2:00 PM EDT. It was in force for 31 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 6, 2009, 12:24 PM EDT (16:24 UTC)
- In effect from
- Apr 6, 2009, 2:00 PM EDT
- Expired
- Apr 7, 2009, 9:21 PM EDT
- In force
- 31 hr
- Issued by
- NWS Morristown, TN
Counties Blount County, TN, Carter County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Monroe County, TN, Sevier County, TN, Unicoi County, TN, City of Norton, VA, Lee County, VA, Wise County, VA
The radar
The Knoxville radar (KMRX), 41 km from the middle of the area, began a volume at 16:23 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.4 hours before the alert went out and 274 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
- 172 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm 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 winter storm warning went out at Apr 6, 12:24 PM EDT, 0 minutes earlier.
Area forecast discussion, Apr 6, 12:24 PM EDT, 0 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 528 AM EDT MON APR 6 2009 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-070930- 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- 528 AM EDT MON APR 6 2009 /428 AM CDT MON APR 6 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT MUCH COLDER AIR WILL MOVE INTO THE REGION TODAY BEHIND A COLD FRONT...WITH SCATTERED SNOW SHOWERS DEVELOPING ACROSS MOST OF THE AREA TONIGHT. SNOWFALL ACCUMULATIONS WILL BE POSSIBLE ACROSS THE HIGHER ELEVATIONS...MAINLY ABOVE 2500 FEET. A WINTER STORM WATCH IS IN EFFECT FOR THE TENNESSEE MOUNTAINS AND WISE COUNTY VIRGINIA. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SNOW SHOWERS MAY CONTINUE IN THE MOUNTAINS INTO TUESDAY MORNING. ALSO...TEMPERATURES ARE ALSO EXPECTED TO FALL BELOW FREEZING AREAWIDE BY SUNRISE ON TUESDAY MORNING...AND AGAIN BY SUNRISE ON WEDNESDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR SNOWFALL REPORTS TONIGHT AND ON TUESDAY.
In the hours before
Local storm report, Apr 6, 11:16 AM EDT, 1 hour 8 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 |
|---|---|---|---|---|
| Apr 5, 10:29 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan | 31 min |
| Apr 6, 1:22 AM EDT | Severe Thunderstorm Warning | MRX | Cocke, Jefferson, Knox, Sevier | 23 min |
| Apr 6, 3:27 PM EDT | Freeze Watch | MRX | Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more | 12 hr |
| Apr 6, 3:27 PM EDT | Freeze Warning | MRX | Anderson, Bledsoe, Blount, Campbell, Carter, Claiborne and 19 more | 12 hr |
| Apr 6, 12:24 PM EDT | Winter Weather Advisory | MRX | Lee, Russell, Scott, Washington, City of Bristol | 33 hr |
Nearby
Winter Storm Warnings in Tennessee, 2009Winter Storm Warnings in Virginia, 2009Every winter storm warning in 2009
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.