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Chester county, PA Weather and Climate Synopsis

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Regional Weather Summary
National Weather Service State College PA
533 AM EDT Tue Jul 25 2017

An mid and upper level trough accompanied by cool air aloft 
will slide to the Northeast U.S. Coast today. In its wake, high 
pressure will build southeast from the Great Lakes and become 
centered over the District on Wednesday. 

Although plenty of shallow and non-precipitating clouds will 
persist into the midday hours across the northern and western 
mountains, the Central and Ridge and Valley Region of the state, 
along with communities throughout the Susquehanna Valley will see
abundant sunshine, and a generally light north to northwest 
breeze of 5 to 10 mph. 

Highs this afternoon will range from the upper 60s to lower 70s 
across the Northern and Western Mountains, to the low 80s across 
the Southeast Piedmont.

Skies will be mainly clear tonight with winds becoming nearly
calm as the center of high pressure drifts southeast into the
region. 

Lows early Wednesday morning will dip into the upper 40s across
the northwest mountains, with 50s to lower 60s heading southeast
across the state. 

Mid level clouds will increase from the west Wednesday night into
Thursday. A cold front will likely push southeast across the 
region late Thursday night through Friday morning with numerous 
showers and isolated to scattered afternoon thunderstorms.


National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For CHESTER County


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Hourly Observations For CHESTER county
800 AM EDT TUE JUL 25 2017

EASTERN PENNSYLVANIA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PHILADELPHIA   CLOUDY    68  64  87 E7        30.03R                  
6HR MIN TEMP:  66; 6HR MAX TEMP:  68; 6HR PCP: TRACE;                

NORTH PHILA    LGT RAIN  68  64  87 NE7       30.04R                  
BLUE BELL*     CLOUDY    63  63 100 CALM      30.05R                  
DOYLESTOWN     CLOUDY    63  62  97 CALM      30.03R                  
QUAKERTOWN*    CLOUDY    64  64 100 CALM      30.05R                  
PERKASIE*      CLOUDY    63  63 100 E5        30.05R                  
POTTSTOWN      CLOUDY    66  65  96 NE3       30.05R                  
LANCASTER      SUNNY     69  61  75 NW9       30.04R                  
READING        CLOUDY    69  64  84 NW5       30.03R                  
6HR MIN TEMP:  67; 6HR MAX TEMP:  69;                                

ALLENTOWN      CLOUDY    67  63  87 N3        30.03R                  
6HR MIN TEMP:  66; 6HR MAX TEMP:  68;                                

MOUNT POCONO   CLOUDY    62  60  93 CALM      30.06R                  
6HR MIN TEMP:  60; 6HR MAX TEMP:  64; 6HR PCP:  0.07;                

HAZLETON       LGT RAIN  63  59  88 CALM      30.10R                  
LEHIGHTON      CLOUDY    64  63  94 CALM      30.04S                  
WILKES BARRE   LGT RAIN  64  63  96 NW6       30.05R FOG              

Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel


Current Agricultural Weather Conditions in Pennsylvania
Based on observations at 800am EDT, Tuesday July 25, 2017

Across Pennsylvania...temperatures are near 63 degrees west, near 64 degrees central, and near 68 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 72%, and the dew point is near 54 degrees. In the central part of the state, relative humidity is near 77%, and the dew point is near 57 degrees. In the east, relative humidity is near 87%, and the dew point is near 64 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are coming from the northwest at 5 mph in the west, where conditions are favorable for spraying. Winds are coming from the west at 6 mph in the central, where conditions are favorable for spraying. Winds are coming from the east at 7 mph in the east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 69 degrees at WilliamSport, Reading, and Lancaster. The lowest temperature is 58 degrees at Bradford.


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For CHESTER County
Hazardous report currently not available
NWS Severe Weather Map , Convective Outlook

Current FORECAST not available 12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Pennsylvania
                                 PENN                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                JUL 30-AUG 3  AUG 1-AUG 7    AUG       AUG-OCT                      
                 -----------  -----------  --------  ---------
   Temperature:      Below       Normal      Above      Above                      
 Precipitation:     Normal       Normal     Normal     Normal                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Historical Weather And Climate Facts For Today

/////////////////////////
JULY 25TH...HISTORIC WEATHER EVENTS
...1876...
The Lexington weather office closed. It would re-open eleven years later.
(NWS Louisville)
...1891...
The mercury hit 109 degrees at Los Angeles CA marking the peak of a torrid
heat wave. (David Ludlum)
...1901...
Louisville's warmest July low temperature: 83 degrees.(NWS Louisville)
...1956...
The Andrea Doria sank in dense fog near Nantucket Lightship MA. The ship
was rammed by the Swedish-American liner, Stockholm, forty-five miles off
the coast of Massachusetts. Fifty-two persons drowned, or were killed by
the impact. (David Ludlum) (The Weather Channel)
...1986...
Tremendous hailstones pounded parts of South Dakota damaging crops,
buildings and vehicles. Hail piled two feet deep at Black Hawk and northern
Rapid City. Hail an inch and a quarter in diameter fell for 85 minutes near
Miller and Huron, piling up to depths of two feet. (The Weather Channel)
...1987...
Sixteen cities in the eastern U.S. reported record high temperatures for
the date. Beckley WV equalled their all-time record high of 91 degrees,
established just the previous day. It marked their fourth day in a row of
90 degree heat, after hitting 90 degrees just twice in the previous 25
years of records. The water temperature of Lake Erie at Buffalo NY reached
79 degrees, the warmest reading in 52 years of records. (The National
Weather Summary)
...1988...
Thunderstorms produced severe weather from central Kansas to western
Kentucky and southern Illinois during the day. Thunder- storms produced
tennis ball size hail at Union MO, and winds gusts to 65 mph at Sedalia MO.
Five cities in Washington and Oregon reported record high temperatures for
the date. Medford OR hit 107 degrees. (The National Weather Summary) (Storm
Data)
...1989...
Early afternoon thunderstorms over west central Missouri drenched the town
of Ferguson with four inches of rain. Early evening thunderstorms in
Pennsylvania produced more than two inches of rain north of Avella in one
hour. (The National Weather Summary)
---
Lexington Area  (ThreadEx Station)
Daily Almanac
Date: Jul 25, 2010

Daily Values         Observed    Normal       Record/Year    Prev Year
Max Temperature          89         86        101 in 1934          84
Min Temperature          75         67         53 in 1911          68
Avg Temperature        82.0         77       88.5 in 1934        76.0
Precipitation         Trace       0.15       3.61 in 1943        1.92
New Snowfall            0.0        0.0        0.0 in 2010+        0.0
Snow Depth                0          -          0 in 2010+          0
HDD (base 65)             0          0          1 in 1911           0
CDD (base 65)            17         12         24 in 1934          11

+ indicates record also occurred in previous years (last occurrence listed).


Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky