Marine Weather and Tides
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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|Sunrise 6:33AM||Sunset 8:13PM||Monday August 19, 2019 4:22 PM EDT (20:22 UTC)||Moonrise 9:32PM||Moonset 9:15AM||Illumination 82%|
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 191921|
area forecast discussion
national weather service pittsburgh pa
321 pm edt Mon aug 19 2019
Warmth, humidity, and daily thunderstorm chances will continue
through midweek. Relatively cooler temperature can be expected to end
Near term until 6 am Tuesday morning
Weak nwly flow around the NRN periphery of sfc high pressure has
generated lake-enhanced CU roughly north of a line from ucp-idi,
owing to steep low-level lapse rates and modest moisture enhancement
from the cross-lake flow.
Deeper CU also are beginning to appear from near hlg-mgw in the
higher-dewpoint air spreading slowly ewd with time. Between these
two regions, relatively drier air is limiting cloud development
despite strong heating.
Any potential for convective initiation will come from focused
convergence that is not readily apparent in sfc analysis. Such
regions could materialize in ERN oh, the i-80 corridor or the ridges,
the result of weak upslope flow. If convection initiates, it will
remain isolated and will subside quickly after sunset with loss of
heating. Initiation is conditional, however, and warrants low pops.
As the sfc high shifts ewd and abundant moisture continues its ewd
spread, fog appears likely to form tonight, especially in the river
valleys. Any fog will burn off in the morning.
Short term 6 am Tuesday morning through Thursday night
Zonal flow around the periphery of a south-central CONUS ridge will
direct a low-amplitude shortwave trough through the upper oh valley
on tue. The atmosphere will become increasingly primed for
thunderstorms on tue, with near-70f dewpoint air, strong heating into
the upper 80s and steepening lapse rates yielding moderate to strong
instability by Tue afternoon.
Although shear is a limiting factor for updraft organization, the
primary expected threat on Tue afternoon will be from damaging
downburst wind and perhaps hail. Thunderstorms are expected to
develop by mid-afternoon.
Farther west, a MCS is forecasted to advance through the midwest
during the afternoon. There is model uncertainty as to the eventual
track of the system, with some model output suggesting it maintains a
nly track while others (the more likely outcome given the instability
axis) suggest it develops a sely movement with time.
Instability remains on wed, but lapse rates potentially weaken|
(either from being worked over by Tue storms or from advection of
warmer air aloft). So although thunderstorms can be expected ahead of
a swd-advancing cold front, potential for strong updrafts is
correspondingly diminished by Wed afternoon.
A cold front advances through the region on Thu morning, and rain
chances shift sewd with the boundary. As high pressure builds in
behind the front, and dry air erodes any low-level moisture, a
seasonal end to the week is anticipated.
Long term Friday through Monday
Surface high pressure building under upper-level troughing in the
nern CONUS should return dry, cooler and less-humid weather to end
Aviation 19z Monday through Saturday
Diurnal heating will yield a growing CU field this aftn, becoming
sct bkn for most places. A weak cap between 850mb and 700mb and a
lack of a lifting mechanism will limit storm generation, though an
isolated TSTM can't be ruled out this aftn eve. The best chances
will be mainly north of i-80 where more extensive CU growth is
occurring. With isold sct showers tstms developing mainly north of
Some hi-res models hint at storm generation overnight from kzzv to
kmgw in association with a weak sfc trough, but a fairly stable
environment and lack of model consensus leaves confidence too low for
mention of this feature.
The lack of moisture evacuation plus enough clearing of clouds will
combine with light winds for patchy fog developing through
radiational cooling Tuesday morning. Confidence highest for valley
areas around and north of kpit where cloud coverage is expected to be
With a number of disturbances passing through the region, periods of
flight restrictions due to tstms and patchy morning fog are likely
through Friday morning.
Pbz watches warnings advisories
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||31 min||Var 5||10.00 mi||A Few Clouds||86°F||62°F||45%||1017.4 hPa|
|Pittsburgh - Allegheny County Airport, PA||10 mi||29 min||Var 6||10.00 mi||Fair||86°F||64°F||49%||1017.1 hPa|
Link to 5 minute data for KPIT
Wind History from PIT (wind in knots)
|1 day ago||SW||W||SW||S||Calm||S||Calm||Calm||S||Calm||Calm||Calm||S||Calm||S||SE||SE||S||SW||SW||W||S||SW|
|2 days ago||W||W||W||W||W||Calm||Calm||Calm||Calm||Calm||S||Calm||Calm||SE||Calm||S||S||S||SW||SW|
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GOES Local Image of EDIT
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Pittsburgh, PA (16,3,4,5)(on/off)  Help
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