Alert archive / Tennessee / Areal Flood Warnings in 2012
Areal Flood Warning 1, NWS Morristown, TN
NWS Morristown, TN issued this areal flood warning at Aug 5, 2012, 9:15 PM EDT for Carter County, Unicoi County, Washington County, Tennessee. It was in force for 6 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
- Aug 5, 2012, 9:15 PM EDT (01:15 UTC)
- Expired
- Aug 6, 2012, 3:15 AM EDT
- In force
- 6 hr
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Carter County, TN, Unicoi County, TN, Washington County, TN
The radar
The Knoxville radar (KMRX), 94 km from the middle of the area, began a volume at 01:16 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 00:00Z, 1.3 hours before the alert went out and 221 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
- 286 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1128 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood 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 areal flood warning went out at Aug 5, 8:00 PM EDT, 1 hour 15 minutes earlier.
Area forecast discussion, Aug 5, 8:00 PM EDT, 1 hour 15 minutes before
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</html>Hazardous weather outlook, Aug 5, 4:36 AM EDT, 16 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 436 AM EDT SUN AUG 5 2012 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-060845- 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- 436 AM EDT SUN AUG 5 2012 /336 AM CDT SUN AUG 5 2012/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT... A COLD FRONT WILL MOVE TOWARD THE AREA WITH CONTINUED MOIST AND UNSTABLE AIR IN PLACE. AS THE FRONT APPROACHES THE TENNESSEE VALLEY DURING THE LATE AFTERNOON AND EVENING...SOME OF THESE STORMS MAY BECOME SEVERE. THE MAIN THREATS BEING DAMAGING WINDS...HAIL UP TO QUARTER SIZE AND HEAVY RAINS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... THE COLD FRONT IS EXPECTED TO STALL IN OR NEAR THE TENNESSEE VALLEY MONDAY...WITH AT LEAST A FEW STRONG STORMS POSSIBLE. MOIST AND UNSTABLE AIR IS LIKELY TO HANG AROUND INTO NEXT WEEK...SO STRONG STORMS ARE CERTAINLY POSSIBLE EACH DAY. GUSTY WINDS IN EXCESS OF 45 MPH...SMALL HAIL AND TORRENTIAL RAINFALL WILL BE POSSIBLE WITH THE STRONGEST STORMS...ESPECIALLY IN THE AFTERNOON AND EVENING HOURS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. TG
In the hours before
Local storm report, Aug 5, 6:52 PM EDT, 2 hours 23 minutes before
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</html>Local storm report, Aug 5, 6:54 PM EDT, 2 hours 21 minutes before
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</html>Local storm report, Aug 5, 7:01 PM EDT, 2 hours 14 minutes before
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</html>Local storm report, Aug 5, 7:28 PM EDT, 1 hour 47 minutes before
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</html>Local storm report, Aug 5, 7:32 PM EDT, 1 hour 43 minutes before
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</html>Local storm report, Aug 5, 8:14 PM EDT, 1 hour 1 minute 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 |
|---|---|---|---|---|
| Aug 6, 3:15 AM EDT | Areal Flood Warning | MRX | Washington | 6 hr |
| Aug 6, 4:27 AM EDT | Flood Watch | MRX | Anderson, Blount, Campbell, Carter, Claiborne, Cocke and 15 more | 11 hr |
| Aug 6, 2:35 PM EDT | Areal Flood Advisory | MRX | Monroe | 83 min |
| Aug 6, 3:19 PM EDT | Flood Watch | MRX | Anderson, Blount, Carter, Cocke, Grainger, Greene and 11 more | 5 hr |
Nearby
Areal Flood Warnings in Tennessee, 2012Every areal flood warning in 2012
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.