Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 6:02AM||Sunset 8:49PM||Thursday July 16, 2020 12:15 PM EDT (16:15 UTC)||Moonrise 1:36AM||Moonset 4:18PM||Illumination 14%|
7 Day Forecast for Marine Location Near Thornburg , PAHourly EDIT Help
Area Discussion for - Pittsburgh, PA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS61 KPBZ 161210 AFDPBZ
Area Forecast Discussion National Weather Service Pittsburgh PA 810 AM EDT Thu Jul 16 2020
SYNOPSIS. Showers and thunderstorms return today through part of Friday with a trough of low pressure. Mainly dry weather is expected Saturday before scattered thunderstorms return Sunday.
NEAR TERM /UNTIL 6 PM THIS EVENING/. Made a few adjustments to POPs and sky cover based on observations and near term models. A shortwave trough is expected to approach and cross the Upper Ohio Valley region today. Increasing diurnal instability and ascent with the trough should result in numerous showers and thunderstorms during the late morning and into the afternoon.
Current conditions this morning feature dewpoints not quite reaching that 70 degree threshold but increased southerly flow through the day enhance this potential. Also noting the semi clearing over western PA owing to increasing instability this morning. This is already a signal from out in OH where some showers have already developed across the area and are slowly moving northeast through the area. Also worth noting will be the RAP analysis depicting an axis of 1000-1200 DCAPE pushing east through the day. This will increase the potential for downbursts owing to the wind threat through the day as well. The storm mode for today continues to look more discrete cells and a tor and wind potential but good shear and robust instability will also make hail a threat. Hi-res models continue to depict the 17z to 19z range as initiation of severe convection.
Previous discussion . Moderate sfc based and ML CAPE, shear, and sufficient downdraft CAPE should result in a damaging wind and large hail potential. In addition, hodographs depicting veering wind with height, and sufficient storm relative helicity, are favorable for a few supercells with a potential for isolated tornadoes. The Storm Prediction Center has continued with the Slight Risk/scattered coverage outlook for severe thunderstorms, and this will be maintained in the Hazardous Weather Outlook. Any flood potential should be limited to localized training, with sufficient storm motion precluding anything more widespread.
A limiting factor could be cloud cover from a decaying MCS to our west. Expect these clouds to gradually thin as they move east, though these could still somewhat limit daytime instability and the resulting severe weather potential. Trends will be monitored through the day. Highs are expected to range from 5 to 10 degrees above average.
SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/. Scattered to numerous showers and thunderstorms, and the severe weather potential, should continue through the early evening as the shortwave trough completes its passage. The shortwave's associated sfc trough could support a few, mainly morning showers, SE of PIT Friday.
Mainly dry weather is then expected through Saturday as sfc high pressure/shortwave ridging builds across the Upper Ohio Valley region. Isolated showers are possible again Saturday night as a weak shortwave trough crosses the region around the periphery of an upper high across the SE CONUS. Temperatures are expected to remain 5 to 10 degrees above average.
LONG TERM /SUNDAY THROUGH WEDNESDAY/. Model ensemble solutions continue to indicate an upper high persisting across the southern half of the CONUS through early next week .Relatively weak shortwaves are progged to periodically cross the Upper Ohio Valley region on the northern periphery of the high. These waves, along with diurnal instability, should lead to scattered showers and thunderstorms across the region, especially during the afternoon and evening. The high should weaken some by mid week, as a somewhat stronger trough crosses the Great Lakes/Upper OH Valley region, with continued scattered showers and thunderstorms. Temperatures should continue to average 5 to 10 degrees above seasonable levels.
AVIATION /12Z THURSDAY THROUGH MONDAY/. VFR conditions will prevail this morning, with mid and high cloud cover from the debris of a decaying MCS to our west.
Showers and thunderstorms will move in from the west ahead of a shortwave trough this afternoon, generally from 17Z on, while diurnal heating and orographic lift create isolated chances over the eastern ridges. One or two waves of activity are possible into the evening hours, and have included 3 hour TEMPO groups to account for the period when the strongest storms are expected. Strong, gusty wind will be possible with stronger thunderstorms, with hail also a possibility.
Lingering low-level moisture and low inversion heights may lead to the development of low clouds and mist overnight, with MVFR/IFR conditions likely at several terminals.
Outlook. An additional round of convection and potential restrictions will be possible Thursday night into Friday morning with secondary shortwave. VFR conditions expected otherwise.
PBZ WATCHES/WARNINGS/ADVISORIES. MD . None. OH . None. PA . None. WV . None.
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. Follow links for more data.
|Pittsburgh, Pittsburgh International Airport, PA||9 mi||24 min||SSW 7||10.00 mi||Overcast||83°F||66°F||59%||1018.1 hPa|
|Pittsburgh - Allegheny County Airport, PA||10 mi||22 min||S 7||10.00 mi||Fair||84°F||69°F||61%||1018.2 hPa|
Link to 5 minute data for KPIT
Wind History from PIT (wind in knots)
|1 day ago||W||N||NW||NE||N||NE||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||E||SE||E||SE||E|
|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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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Pittsburgh, PA (12,3,4,5)(on/off)  Help
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