Alert archive / Tennessee / Flash Flood Warnings in 2011
Flash Flood Warning 41, NWS Nashville, TN
NWS Nashville, TN issued this flash flood warning at Jul 15, 2011, 3:48 AM CDT for Clay County, Overton County, Tennessee. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 15, 2011, 3:48 AM CDT (08:48 UTC)
- Expired
- Jul 15, 2011, 6:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clay County, TN, Overton County, TN
The radar
The Nashville radar (KOHX), 107 km from the middle of the area, began a volume at 08:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 4:15 AM CDT | FLASH FLOOD | 4 Nnw Livingston, TN | OVERTON S.O. REPORTS ROADWAYS COVERED WITH WATER NEAR THE COMMUNITIES OF ALLONS AND OAKLEY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 8.8 hours before the alert went out and 114 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
- 1988 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
817 WGUS54 KOHX 150848 FFWOHX TNC027-133-151145- /O.NEW.KOHX.FF.W.0041.110715T0848Z-110715T1145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NASHVILLE TN 348 AM CDT FRI JUL 15 2011 THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME SOUTHEASTERN CLAY COUNTY IN MIDDLE TENNESSEE... NORTHWESTERN OVERTON COUNTY IN MIDDLE TENNESSEE... THIS INCLUDES THE CITY OF LIVINGSTON... * UNTIL 645 AM CDT * AT 341 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAINFALL OVER NORTHWESTERN OVERTON COUNTY AND EXTREME SOUTHEAST CLAY COUNTY. RADAR ESTIMATES 2 TO 3 INCHES OF RANI HAVE FALLEN IN THE HOUR. THIS WILL LIKELY RESULT IN SOME ROADWAYS BEING FLOODED AND A FEW CREEKS AND STREAMS OVERFLOWING THEIR BANKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. && LAT...LON 3655 8548 3655 8529 3638 8529 3639 8549 $$ JLM
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 8:07 PM CDT | Special Weather Statement | OHX | Coffee, Cumberland, Fentress, Grundy, Overton, Pickett and 4 more | 53 min |
| Jul 15, 1:26 AM CDT | Flash Flood Warning | OHX | Fentress | 3 hr |
| Jul 15, 2:48 AM CDT | Areal Flood Advisory | OHX | Overton, Pickett | 3 hr |
| Jul 15, 3:21 AM CDT | Flash Flood Warning | OHX | Overton | 2 hr |
Nearby
Flash Flood Warnings in Tennessee, 2011Every flash flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.