Marine Weather and Tides
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.
|Sunrise 7:03AM||Sunset 7:29PM||Thursday September 16, 2021 1:58 PM EDT (17:58 UTC)||Moonrise 4:24PM||Moonset 1:05AM||Illumination 76%|
7 Day Forecast for Marine Location Near Union, WVHourly EDIT Help
Area Discussion for - Blacksburg, VA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS61 KRNK 161701 AFDRNK
Area Forecast Discussion National Weather Service Blacksburg VA Issued by National Weather Service Raleigh NC 101 PM EDT Thu Sep 16 2021
SYNOPSIS. A cold front continues to slowly push east today. Shower and storm chances remain through at least Friday as moisture from Tropical Depression Nicholas funnels in from the south and invest 96l pulls northward up the Atlantic coast. Drier conditions with high pressure for the weekend.
NEAR TERM /THROUGH TONIGHT/. As of 1020 AM EDT Thursday .
Another round of scattered showers and storms today, especially east of the Blue Ridge .
Clouds remain in place across the area this morning as a weak mid level shear axis remains parked overhead. Areas of fog from earlier this morning have lifted for the most part but a few spots in the mountains may still see reduced vsbys through late morning. Meanwhile, a weak cold front remains to the west but will slowly move through the area later today. A combination of elevated PW's associated with TD Nicholas, along with onshore flow associated with the weak low of the NC coast, will import additional moisture into the area this afternoon. Scattered showers and storms will develop after noon, mainly east of the mountains with an overall decrease in coverage this evening with the loss of daytime heating and instability. Overall, not a whole lot to change to the inherited forecast outside of making minor adjustments to PoPs today based on radar trends through 14Z.
Given onshore flow and extensive cloud cover, highs today will be a few degrees below climo with temperatures reaching the upper 70s/lower 80s to the east and low to mid 70s to the west. Lows in the upper 60s to the east, lower 60s to the west.
SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/. As of 330 AM EDT Thursday .
Spotty showers through the weekend .
By Friday morning, our weather pattern will be influenced mainly by a deep low pressure system - possibly a declared tropical cyclone by this point per the NHC - drifting northward off the lower Mid- Atlantic coast. This low will continue radiating waves of moisture westward across the Appalachian chain, supporting spotty, in-and-out shower activity through the day into Friday night. Better chances for rainfall will be found along the crest of the Blue Ridge and other ridgelines as the generally northeasterly winds around this low push the moisture into the higher terrain. Weather forecast models are still hinting that a nearly north-to-south boundary will develop Friday night across the Piedmont to the Blue Ridge, providing focus for shower activity, but am still uncertain where exactly or to what degree this any rainfall will develop.
On Saturday, the low pressure system will begin to shift northeast away from our region. Regardless, enough moisture will remain to support renewed spotty shower activity as daytime heating commences.
Saturday night into early Sunday, we can expect a cold front to pass across the central Appalachians before eventually stalling across the Carolinas. High pressure behind the front will shift across New England and then quickly extend southward across the Mid-Atlantic to wedge against the eastern face of the Appalachians. Airflow around this high pressure will bring easterly winds that will carry Atlantic moisture across the mountains. This will keep showers in the forecast Sunday and Sunday night, with highest rain chances found across the Highlands of North Carolina.
LONG TERM /SATURDAY THROUGH WEDNESDAY/. As of 330 AM EDT Thursday .
Heavy showers possible during the early half of next week .
Looking to Monday, with high pressure centered across New England and low pressure developing across the Rockies, winds across the Tennessee Valley will come from the south, drawing the remnant deep moisture left over from Tropical Depression Nicholas northward. At this time, it appears that the brunt of this moisture, and therefore the potential for heaviest rainfall, will remain to our west. That stated: will have to keep an eye out that some of this moisture may work it's way into the Highlands of North Carolina and western Virginia, providing the focus for heavy rain and flooding.
The better chances for heavy rain appear to be during the middle of next week, when a cold front approaching from the west will push the axis of deepest moisture more across the Appalachian chain.
AVIATION /18Z THURSDAY THROUGH TUESDAY/. As of 101 PM EDT Thursday .
Mainly VFR conditions across the area this afternoon except for a few pockets of lingering MVFR cigs near the mountains. Meanwhile, showers near LYH and DAN from earlier in the day have dissipated and all sites are dry as of 17Z. Additional showers and isolated thunderstorms should develop across the eastern sites around 20Z or so and migrate westward through 22Z. Coverage will be less at the western-most sites with an overall decrease area-wide after 00Z with the loss of daytime heating and instability. Later tonight there is good potential for stratus as well as at least some fog development, especially where rain occurs later this afternoon.
Winds through the period will be light/easterly.
Extended Aviation Discussion .
Spotty sub-VFR conditions will continue into Friday as shower and storm chances remain with low pressure advancing northward off the Atlantic coast. Drier conditions are expected heading into the weekend and early next week as high pressure builds over the region.
RNK WATCHES/WARNINGS/ADVISORIES. VA . None. NC . None. WV . None.
SYNOPSIS . ET NEAR TERM . DL/ET SHORT TERM . NF LONG TERM . NF AVIATION . DL/ET/NF
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|Lewisburg / Greenbrier, WV||18 mi||67 min||S 5||10.00 mi||Mostly Cloudy||75°F||64°F||69%||1022.7 hPa|
Link to 5 minute data for KLWB
Wind History from LWB (wind in knots)
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