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Shaded-relief map of Harwick, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · ALLEGHENY COUNTY

Harwick

850 people, 960 ft above sea level in Allegheny County.

960 ftElevation, city center
850People, 2024 estimate
0 sq miLand area
Clear 39°
Clear now Dew point 35° · W 13 mph · high 39°
City of Harwick River Interstate 2 miles
Explore the plate Order a print

The Harwick plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Harwick

NWS forecast and National Blend of Models · updated 5:00 PM EST
RIGHT NOW Pittsburgh/Butler Regional Airport (KBTP) · 5:56 PM
Clear
39° Clear Feels like 31° · high of 39° near 6 PM
WindW 13 mphno gusts
Humidity86%rising to 100% by morning
Pressure30.06 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 35° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Tonight, about 9 PMin about 3 hours · 44% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 70.05 in · 7 dry days
ALERTS & OUTLOOKS
No watches or warnings for Allegheny County
NWS Pittsburgh and the Storm Prediction Center · checked 6:17 PM
SUN & MOON
↑ 7:04 AM5:03 PM ↓
9 h 58 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
27
GOODAir quality index · ozone
Tomorrow: 25, good. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
mostly cloudy night
rain
rain
rain
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy day
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly clear night
mostly clear night
mostly clear night
mostly clear night
partly cloudy day
mostly sunny
mostly sunny
clear day
TEMPERATURE °F
39°
36°
44°
35°
45°
28°
CHANCE OF RAIN
44% · 0.11 in Sunday overnight 50%
WIND, MPH
12
10
8
7
7
9
10
9
5
0
0
0
0
5
6
6
0
0
0
0
0
3
6
2
HOW IT FEELS · DEW POINT
Dry: dew points 28 to 39°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
SAT Nov. 14 Chance of showers Chance of showers
39° 32°
40% rain — W 12 A
SUN Nov. 15 Chance of showers Chance of showers
46° 32°
40% rain — NW 9 A
MON Nov. 16 Mostly cloudy Mostly cloudy
48° 25°
0% rain — NW 4 A
TUE Nov. 17 Partly cloudy Partly cloudy
52° 26°
0% rain — SW 5 A
WED Nov. 18 Sunny Sunny
55° 27°
0% rain — S 5 B
THU Nov. 19 Mostly sunny Mostly sunny
58° 36°
0% rain — SSW 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
59° 37°
0% rain — WSW 5 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Harwick about 5,000 feet above the ground was over British Columbia three days ago, and over the Great Lakes a day ago, about 2,260 miles back along its path. Near the ground the air came from the Canadian Prairies; at 10,000 feet, from the open Pacific. It feels dry all the same. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK, SIX YEARS AGO Nov. 11, 2020

The hottest this week has been

74° on Nov. 11, 2020, the hottest reading for this week of the year since 1905. Next is 70° in 2021.

70°
74°
20212020
Source: NOAA RCC-ACIS, the Acmetonia Lock 3 record since 1905.
MILE2
THE GROUND

What Harwick stands on

Harwick’s center stands about 960 ft above sea level. Within three miles the land runs from 720 ft to 1,270 ft, a difference of 550 ft: hilly country. The highest named summit within 15 miles is Rich Hill, about 1,290 ft, 2 miles northwest.

The section below crosses 3 rock units mapped at the surface.

Valencia to Murrysville, cut in half

A section northwest to southeast, 24 miles through the town center
800 ft1,000 ft1,200 ft HARWICK960 ftHigh point of the line1,350 ftRich Hill1,290 ftSpringdale780 ftPlum1,100 ftMurrysville1,200 ft ← NW · ValenciaMurrysville · SE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 31×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.

Rock at the surface along the line

Casselman Formation

Shale, clastic. Age: Carboniferous, 299 to 324 million years old. About 13 mi of the line.

Glenshaw Formation

Shale. Age: Carboniferous, 299 to 324 million years old. About 11 mi of the line.

Monongahela Group

Limestone, shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 0.3 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.

MILE3
THE WATER

Where Harwick’s rain goes

A raindrop that lands in Harwick reaches the Gulf of America by way of Tawney Run, the Allegheny, the Ohio and the Mississippi: about 1,960 river miles.

THE WAY DOWN, TO SCALE
Harwick≈ 1,960 mi · the Gulf of America
FROM THE CENTER OF HARWICK ≈ 1,960 mi to the Gulf of America Tawney Run → Allegheny → Ohio → Mississippi

970 miles of the trip are on the Ohio.

Traced down the USGS NHDPlus V2.1 river network from the Census center point of Harwick; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Harwick’s year

1991–2020 normals · records since 1905 · Acmetonia Lock 3

Harwick has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 19° in January. About 44 inches of rain fall in a normal year.

36°19°40°21°49°27°62°38°72°49°79°57°83°62°82°61°75°54°64°43°51°32°42°25° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 TODAY HARWICK 44.5 in rain a year
Normal high to low, by month Rain by month Freezing
July, average83° / 62°high / low, the warmest month
January, average36° / 19°high / low, the coldest month
Rain a year44.5 inwettest months: July and June
Hottest on record102°FJune 16, 2022
Coldest on record−14°FFebruary 1, 2026
Wettest day on record6.88 inSeptember 18, 2004
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Lows below freezingNov. 11 to April 1; normal lows fall below 32°
MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high36°40°49°62°72°79°83°82°75°64°51°42°
Normal low19°21°27°38°49°57°62°61°54°43°32°25°
Rain, inches3.382.873.683.703.914.454.543.564.183.323.263.66

Normals 1991–2020 and records since 1905 at Acmetonia Lock 3, here, 210 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Harwick on the Forecast Network

Neighboring plates

Pittsburgh PA · 12 MI 12 miles southwest Bethel Park PA · 20 MI 20 miles southwest Cleveland OH · 117 MI 117 miles northwest Columbus OH · 172 MI 172 miles west Washington DC · 187 MI 187 miles southeast Baltimore MD · 190 MI 190 miles southeast
FORECASTCITY
Map of Harwick, Pennsylvania. Explore the plate
PENNSYLVANIA · ALLEGHENY

Harwick

850 people, 960 ft above sea level in Allegheny County.

960 ftElevation
850People
0 sq miLand
Clear 39°
ClearDew point 35°
1

Today in Harwick

NEXT 15 HOURS
Now mostly cloudy night 39° 9%
9p rain 35° 31%
12a rain 36° 44%
3a rain 36° 36%
6a mostly cloudy night 36° 21%
9a mostly cloudy day 39° 1%
Rain
NEXT RAINTonight about 9 PM · 44%
→
Sat40%
Chance of showers Chance of showers
32
39
A
Sun40%
Chance of showers Chance of showers
32
46
A
Mon0%
Mostly cloudy Mostly cloudy
25
48
A
Tue0%
Partly cloudy Partly cloudy
26
52
A
Wed0%
Sunny Sunny
27
55
B
Thu0%
Mostly sunny Mostly sunny
36
58
B
Fri0%
Mostly sunny Mostly sunny
37
59
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, SIX YEARS AGO · NOV. 11, 2020

74°, the hottest this week of the year has been since 1905.

2

What Harwick stands on

Harwick’s center stands about 960 ft above sea level. Within three miles the land runs from 720 ft to 1,270 ft, a difference of 550 ft: hilly country. The highest named summit within 15 miles is Rich Hill, about 1,290 ft, 2 miles northwest.

Harwick, northwest to southeast Harwick960 ftRich Hill1,290 ft ← NWSE → 24 miles through the town center; vertical exaggeration about 59×. Colors: rock at the surface.
Elevation, center960 ft
Within 3 miles720 to 1,270 ft
Lie of the landHilly (550 ft of relief)
High point nearbyRich Hill, 1,290 ft, 2 mi northwest
5

Harwick’s year

Harwick has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 19° in January. About 44 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 44.5 in
July, average83° / 62° · high / low, the warmest month
January, average36° / 19° · high / low, the coldest month
Rain a year44.5 in · wettest months: July and June
Hottest on record102°F · June 16, 2022
Coldest on record−14°F · February 1, 2026
Wettest day on record6.88 in · September 18, 2004
Climate typeHot-summer humid continental · Köppen Dfa
1Lows below freezing · Nov. 11 to April 1; normal lows fall below 32°
Normals 1991–2020 and records since 1905 at Acmetonia Lock 3, here, 210 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,960 mito the Gulf of AmericaTawney Run → Allegheny → Ohio → Mississippi

A raindrop that lands in Harwick reaches the Gulf of America by way of Tawney Run, the Allegheny, the Ohio and the Mississippi: about 1,960 river miles.

970 miles of the trip are on the Ohio.