Alert archive / Tennessee / Flash Flood Watches in 2015
Flash Flood Watch 3, NWS Morristown, TN
NWS Morristown, TN issued this flash flood watch at Oct 1, 2015, 3:04 PM EDT for 20 counties in Tennessee; 7 counties in Virginia; Cherokee County, Clay County, North Carolina. It took effect at Oct 3, 2015, 8:00 AM EDT. It was in force for 28 hr.
The area
The counties it named.
The facts
- Issued
- Oct 1, 2015, 3:04 PM EDT (19:04 UTC)
- In effect from
- Oct 3, 2015, 8:00 AM EDT
- Expired
- Oct 4, 2015, 12:00 PM EDT
- In force
- 28 hr
- Issued by
- NWS Morristown, TN
- Flood severity
- None
All 29 counties
Cherokee County, NC, Clay County, NC, Blount County, TN, Bradley County, TN, Carter County, TN, Cocke County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, McMinn County, TN, Monroe County, TN, Polk County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Washington County, TN, City of Bristol, VA, City of Norton, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA
The radar
The Knoxville radar (KMRX), 20 km from the middle of the area, began a volume at 19:06 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, 7.1 hours before the alert went out and 306 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 616 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Sep 30, 7:47 PM EDT, 19 hours 17 minutes earlier.
Area forecast discussion, Sep 30, 7:47 PM EDT, 19 hours 17 minutes before
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</html>Hazardous weather outlook, Sep 30, 3:30 PM EDT, 23 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 330 PM EDT WED SEP 30 2015 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-011930- 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- 330 PM EDT WED SEP 30 2015 /230 PM CDT WED SEP 30 2015/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...THIS AFTERNOON THROUGH THURSDAY... LOCALLY HEAVY RAIN WILL BE POSSIBLE TONIGHT AND THURSDAY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... HEAVY RAINFALL THREAT POSSIBLE FROM FRIDAY NIGHT THROUGH SATURDAY NIGHT DEPENDING ON THE EVOLUTION AND MERGER OF HURRICANE JOAQUIN AND A CLOSED UPPER LOW ACROSS THE SOUTHEASTERN UNITED STATES. THE BEST CHANCES FOR HEAVY RAIN LIE ACROSS SOUTHWEST VIRGINIA...EASTERN MOUNTAINS...AND DOWN THROUGH SOUTHWEST NORTH CAROLINA. IF THESE FEATURES MERGE...ANYWHERE FROM 2 TO 5 INCHES OF RAIN ARE EXPECTED FRIDAY NIGHT THROUGH SATURDAY NIGHT WITH LOCALLY HIGHER AMOUNTS POSSIBLE. FLASH FLOODING AND RIVER FLOODING ARE POSSIBLE THIS WEEKEND. PLEASE STAY TUNED FOR FURTHER UPDATES. THERE IS STILL A GOOD DEAL OF UNCERTAINTY ON HOW THE STORM SYSTEM DEVELOPS THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS WEEKEND DUE TO THE POTENTIAL OF FLOODING.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 1, 7:55 PM EDT | Areal Flood Advisory | MRX | Cocke, Greene | 3 hr |
Nearby
Flash Flood Watches in Tennessee, 2015Flash Flood Watches in Virginia, 2015Flash Flood Watches in North Carolina, 2015Every flash flood watch in 2015
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.