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Marine Weather and Tides
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8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it. 8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue. 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 7:37AM | Sunset 5:23PM | Monday January 18, 2021 8:40 PM EST (01:40 UTC) | Moonrise 11:02AM | Moonset 11:11PM | Illumination 31% |  |
7 Day Forecast for Marine Location Near Thornburg , PA
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location: 40.44, -80.08 debug
Area Discussion for - Pittsburgh, PA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS61 KPBZ 182312 AFDPBZ
Area Forecast Discussion National Weather Service Pittsburgh PA 612 PM EST Mon Jan 18 2021
SYNOPSIS. Fluctuating temperature with periodic snow showers is expected for most of the week.
NEAR TERM /THROUGH TUESDAY/. Shortwave ripples in quasi-zonal flow aloft wl maintain snow flurry and snow shower potential through the night. Better ascent/snow enhancement is projected on Tuesday morning with the development of an E-W oriented jet to the south of the immediate area. Problematic totals are not anticipated, but an inch or two is possible in any areas that see repetitive snow showers.
SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY NIGHT/. The aforementioned shortwave will traverse the region Tuesday morning into early afternoon within developing zonal flow. Enough influence from the upper jet setting up south of the region plus orographic lift due to strengthening westerlies will allow for snow development over northern WV, favoring the higher terrain. Influence will be more limited farther north, keeping snow showers more isolated. All snow will quickly dissipate in the aftn as dry air filters in behind the exiting shortwave. Late day warming may push area temperature near to slightly above seasonal averages when a warm front lifts northward in advance of a deepening shortwave that will drop out of the western Great Lakes.
Snow showers will return late Tuesday into Wednesday with the approach/passage of the western Great Lakes shortwave and its associated cold front. A combination of strong upper dynamics, plenty of moisture, cold advection plus transition to NW flow (allowing for lake enhancement) will allow for more notable accumulations, favoring the eastern ridges. The cold intrusion will also drop area temperature well below seasonal averages, with most sites struggling to reach 30 degrees.
Increasing subsidence and building sfc high pressure will slowly turn off the lake enhanced snow showers Wednesday afternoon, with dry conditions developing by the night with the potential for some breaks in the clouds as they thin southwest to northeast.
LONG TERM /THURSDAY THROUGH MONDAY/. A low pressure system is expected to move from central Canada to the northern Great Lakes Thursday, with warm SW flow developing over the upper OH River Valley. Above seasonal average temperature is expected, but will be short-lived, with the cold front dropping southeast through the region Thursday aftn. Moisture and forcing will be limited and better located farther north, meaning only isolated snow to rain/snow mix showers are expected along the advancing boundary.
Additional precipitation chances may develop Friday as cold NW flow develops in the wake of the eastward exiting low and upper trough. Otherwise, cold advection will once again drop area temperature well below seasonal averages.
Upper ridging and sfc high pressure will promote dry but cool weather through the weekend. Widespread precipitation is likely to return early next week as low pressure moves out of the Colorado Front Range.
AVIATION /23Z MONDAY THROUGH SATURDAY/. MVFR cigs should prevail through at least the first half of the period as continued shortwave supported snow showers trek along the base of a broad Great Lakes trough. Brief shortwave ridging should then promote the return to VFR / end of show showers toward the end of the TAF period for some ports; though a low-VFR cig deck should prevail under a weak inversion.
Outlook. Occasional restrictions will continue late Tuesday through early Wednesday under broad upper troughing. Brief high pressure should return VFR later Wednesday before being interrupted once more by an encroaching trough on Thursday.
PBZ WATCHES/WARNINGS/ADVISORIES. PA . None. OH . None. WV . None.
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapAirport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Pittsburgh, Pittsburgh International Airport, PA | 9 mi | 50 min | WSW 7 | 6.00 mi | Light Snow | 30°F | 24°F | 79% | 1017.3 hPa |
| Pittsburgh - Allegheny County Airport, PA | 10 mi | 48 min | WSW 14 G 23 | 2.50 mi | Light Snow | 30°F | 25°F | 82% | 1016.8 hPa |
Link to 5 minute data for KPIT
Wind History from PIT (wind in knots)
| 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | SW | SW | W | SW | SW | W | SW | SW | W | W | W | W | W | W | W | W | W G19 | W G17 | W | SW | SW | W | W | W |
| 1 day ago | SW | W | W | SW | W | SW | SW | SW | W | SW | W | W | W G15 | W | W | W | SW | SW | SW | SW | S | SW | SW | SW |
| 2 days ago | S | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | Calm | S | S | Calm | Calm | Calm | W | W | W | W | W | W | SW | SW |
Tide / Current Tables for
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