Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 6:25AM||Sunset 5:34PM||Thursday February 21, 2019 3:41 PM CST (21:41 UTC)||Moonrise 9:10PM||Moonset 9:00AM||Illumination 94%|
7 Day Forecast for Marine Location Near Rural Hill, TNHourly EDIT Help
Area Discussion for -  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus64 kohx 212100|
area forecast discussion
national weather service nashville tn
300 pm cst Thu feb 21 2019
Potentially life-threatening flash flooding possible...
While Sun was seen by many this morning north of i-40, showers have
already started to stream into middle tn this afternoon. This isn't
great news because an earlier arrival of the rains means even more
we don't need. Flood advisories have already started flowing out in
our far southern counties and for this reason, we're going to move
up the start time of the flash flood watch with the issuance of this
afternoon's forecast package.
This isn't a forecast discussion I write lightly. After yesterday's
widespread flooding across all of middle tn, even with the 18 hour
break in rainfall, the addition of even another 1 to 1.5 inches is
going to create some major issues. The problem is, we're now
forecasting 1 to 3 inches of rain just through tomorrow afternoon
and a total of 3 to 5 inches from tonight through Saturday night.
The highest amounts are currently thought to fall across southwest
portions of middle tn, basically west of i-24 and south of i-40.
While there were already swift water rescues yesterday, this amount
of rainfall is likely to cause more of the same and probably even
cause some people to be thinking about a plan to evacuate. This
needs to be your focus prior tonight. If you live near a stream or
a creek or a river that you know floods easily, you need to have a
plan in place to evacuate and get to higher ground in the event
waters begin to rise as this has the makings of a life-threatening
situation. The main time of concern begins early tomorrow morning,
runs right through most of the day tomorrow and probably won't let
up much, if at all, tomorrow night.
While there is a severe weather threat Saturday evening across the
mid-state, the focus right now needs to be the extreme amount of
rainfall we're expecting. Please don't take this lightly. Have a
plan in place now so you can evacuate to higher ground quickly, if
Now, for the severe weather threat. Models continue to show an
intense system developing upstream from the tn river valley Saturday
morning. This system will increase winds fields to the point where
we're looking at significant low-level helicities (on the order|
of 500 0-1 km) by Saturday evening. The question will be the
amount of instability that can be realized. A strong low-level jet
will try to strengthen the warm air advection ahead of what is
likely to be at least a broken, if not solid, line of convection
for Saturday evening. Here's the major issue with this: even if we
only get strong wind gusts out of this system (40-50 mph), with
as wet as the ground already is, trees are going to fall very
easily. This is something folks need to keep in mind as we go into
Saturday evening. The main concern right now is damaging straight
line winds, but with the low-level helicities expected, i
wouldn't be surprised to see rotation in many of these storms.
Again, the flash flooding threat is the main concern in the next
24-36 hours, but then we need to watch this closely.
With all of that said, models are hinting at the possibility of at
least 3 days of dry weather after Saturday night. This will be a
welcomed change after the next couple of days.
18z TAF discussion.
MainlyVFR through this afternoon, except lingering MVFR CIGS at
csv. For tonight, showers return to the area, so CIGS vsbys will
fall to MVFR overnight with some ifr at times. Winds will be nne
6-10kt through the period.
Preliminary point temps pops
Nashville 43 53 51 69 49 90 90 100 90 90
clarksville 42 52 48 69 46 90 90 100 100 90
crossville 41 52 49 63 48 100 100 100 70 90
columbia 44 53 52 70 48 100 100 90 80 90
lawrenceburg 45 55 53 70 49 100 100 90 70 90
waverly 42 51 50 70 46 90 90 100 100 90
Ohx watches warnings advisories
Flash flood watch through Saturday evening for bedford-cannon-
Discussion... ... Unger
aviation... ... ..13
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Nashville, Nashville International Airport, TN||4 mi||49 min||N 6||10.00 mi||Overcast||52°F||37°F||59%||1021.9 hPa|
|Smyrna, Smyrna Airport, TN||10 mi||46 min||ENE 4||10.00 mi||Light Rain||50°F||42°F||74%||1019.3 hPa|
Wind History from BNA (wind in knots)
|1 day ago||E||E||E||NE||NE||E||NE||E||SE||SE||SE|
|2 days ago||N|
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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