Alert archive / Tennessee / Flood Watches in 2015
Flood Watch 1, NWS Nashville, TN
NWS Nashville, TN issued this flood watch at Feb 20, 2015, 2:02 PM CST for 35 counties in Tennessee. It took effect at Feb 21, 2015, 6:00 AM CST. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Feb 20, 2015, 2:02 PM CST (20:02 UTC)
- In effect from
- Feb 21, 2015, 6:00 AM CST
- Expired
- Feb 22, 2015, 12:00 PM CST
- In force
- 30 hr
- Issued by
- NWS Nashville, TN
- Flood severity
- None
All 35 counties
Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Grundy County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lewis County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 27 km from the middle of the area, began a volume at 20:04 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, 8.0 hours before the alert went out and 21 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
- 1512 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Nashville, TN wrote its last area forecast discussion before this flood watch went out at Feb 20, 12:45 PM CST, 1 hour 17 minutes earlier.
Area forecast discussion, Feb 20, 12:45 PM CST, 1 hour 17 minutes before
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</html>Hazardous weather outlook, Feb 20, 5:13 AM CST, 8 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 513 AM CST FRI FEB 20 2015 TNZ005>011-023>034-056>066-075-077>080-093>095-211100- STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-HOUSTON- HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH- JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-WILLIAMSON- MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-CUMBERLAND-BEDFORD- COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-GILES- 513 AM CST FRI FEB 20 2015 ...ICE STORM WARNING IN EFFECT FROM NOON TODAY TO 9 AM CST SATURDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT. SNOWFALL ACCUMULATIONS UP TO 1 INCH WILL BE POSSIBLE THROUGH TONIGHT. ONE QUARTER TO ONE HALF INCH OF ICE IS EXPECTED ACROSS NORTHERN AREAS WITH AROUND ONE QUARTER OF AN INCH ACROSS SOUTHERN AREAS. GIVEN THAT A COATING OF ICE ON TREES ALREADY EXISTS ACROSS MUCH OF THE AREA...MAJOR PROBLEMS CAN BE EXPECTED. WARMER AIR WILL CONTINUE TO MOVE IN LATE TONIGHT...WITH WINTRY PRECIPITATION TRANSITIONING OVER TO ALL RAIN BEGINNING ALONG THE TENNESSEE RIVER AROUND MIDNIGHT...AND ACROSS MOST AREAS GENERALLY WEST OF THE CUMBERLAND PLATEAU REGION THROUGH TONIGHT. HAZARDOUS TRAVEL CONDITIONS ARE EXPECTED THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. FREEZING RAIN ACROSS THE CUMBERLAND PLATEAU REGION SHOULD TRANSITION TO ALL RAIN BY THE MID MORNING HOURS ON SATURDAY. WARMING TEMPERATURES... MELTING SNOW AND ICE...AND HEAVY RAINFALL WILL BRING THE POTENTIAL FOR LOCALIZED FLOODING ON SATURDAY TO THE ENTIRE MID STATE. HAZARDOUS TRAVEL CONDITIONS ARE EXPECTED AT LEAST THROUGH THE MID MORNING HOURS ON SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS AND LOCAL EMERGENCY MANAGEMENT OFFICIALS ARE ENCOURAGED TO REPORT ANY SNOW ACCUMULATIONS TO THE NATIONAL WEATHER SERVICE IN NASHVILLE. MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WEATHER.GOV OR BY LISTENING TO NOAA WEATHER RADIO. 31
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 4:05 AM CST | Ice Storm Warning | OHX | Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more | 29 hr |
Nearby
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.