NWS Now Accepting Applications for Summer Student Interns

The Student Volunteer Intern Program
at the NWS Mount Holly Forecast Office

Are you a college student from the Philadelphia/Delaware Valley area, in your Junior year of a major in Meteorology or a related field?

Are you interested in learning first-hand about operational forecasting in the National Weather Service?

If so, then the student volunteer intern program at

NWS Mount Holly may be right for you.

More details at: http://www.weather.gov/phi/recruit

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Stewartsville December 2017 Summary

Stewartsville Monthly Weather Observation Summary

Dec-17

DAY MAX MIN MEAN PRECIP SNOW SOG COMMENTS
1 53.0 30.0 41.5 0.01
2 49.0 25.0 37.0 0
3 48.0 29.0 38.5 0
4 51.0 28.0 39.5 0.00
5 58.0 46.0 52.0 0.22
6 57.0 34.0 45.5 0.01
7 44.0 27.0 35.5 0
8 36.0 27.0 31.5 0
9 34.0 28.0 31.0 0.18 4.1 Coastal
10 39.0 21.0 30.0 0 4
11 40.0 27.0 33.5 0 2
12 43.0 23.0 33.0 0 T
13 30.0 18.0 24.0 T T
14 31.0 16.0 23.5 0.08 2.7 2.7 Clipper2
15 26.0 10.0 18.0 0.03 0.7 1.5 Clipper 3
16 38.0 15.0 26.5 0 2
17 38.0 30.0 34.0 0
18 45.0 33.0 39.0 0
19 56.0 41.0 48.5 0
20 51.0 26.0 38.5 0
21 40.0 25.0 32.5 0
22 46.0 30.0 38.0 0
23 53.0 37.0 45.0 0.75
24 41.0 33.0 37.0 0.06 0.2
25 35.0 25.0 30.0 0.14 0.2 0.4 White Christmas?
26 28.0 18.0 23.0 0
27 25.0 12.0 18.5 0
28 20.0 9.0 14.5 0
29 22.0 10.0 16.0 0
30 24.0 13.0 18.5 1 T
31 18.0 6.0 12.0 0 1
1.48 8.90
8.90 Season Total
Extreme High 58.0 Date: 12/27/2016
Extreme Low 6.0 Date: 12/20/2016
Mean Max: 39.3
Mean Low: 24.3
Mean: 31.8

dabour@att.net

SOG = Snow On Ground measured at 7 AM EST

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NOVEMBER 2017 – CLIMATE SUMMARY AND STATISTICS FOR ,ROCKVILLE 2.8 WNW MARYLAND FOR NJWO BLOG PUBLICATION

NOVEMBER 2017 ROCKVILLE 2.8 WNW MARYLAND CLIMATE STATISTICS FOR THE NJWO BLOG
by Kevin Shaw, Observer in charge

Average high temperature 54.6°
Average low temperature 37.8°
Mean temperature 46.2°

Precipitation 2.04″
Greatest daily amount(date) 0.95″ (7)
Snow 0.0″
Year to date precipitation 37.76″

High temperature for the month (date) 72° (3)
Low temperature for the month (date) 23° (11)

Highest barometric pressure (date) 30.67” (11)
Lowest barometric pressure (date) 29.30” (19)

Peak wind gust (date/direction): N/A

Heating degree days for the month: 564
Cooling degree days for the month: 0

Greatest diurnal range (date): 35.2° (18)
Least diurnal range (date) 7.1° (5)

Number of days:

Fog 4
Thunder 0
Cloudy 8
Partly Cloudy 13
Sunny/Clear 9
Max temp => 70° 2
Min temp =< 32° 6

NOVEMBER 2017 – CLIMATE SUMMARY
ROCKVILLE 2.8 WNW MARYLAND
by Kevin Shaw, observer in charge

November 2017 was significantly drier than normal with near normal temperatures,
according to the NWS PRESTO November 2017 publication. The 2.04″rain that did
fall all month was mostly concentrated in the first part of the month, as over 84%
of the month’s total precipitation fell on 4 straight days between the 4th and 7th
(1.72″). There was a total of 8 days of measurable rain. No snow fell. Temperatures
fell slowly through the month as would be expected for November, with a most notable
cold snap from the 10th – 12th that marked our first freeze of the season. It is very
unusual to have the first freeze occurring on the same date throughout the region.

A brief warm period occurred at the beginning of the month on the 2nd and 3rd,
with maximum temperatures recorded in the low 70s. Minimum temperatures
recorded in the low-mid 50s occurred on the 3rd, 5th and 6th. Our highest
barometric pressure reading of the month (30.67″) occurred on the 11th,
coincidentally on our coldest day of the month. Our lowest barometric
pressure reading of the month (29.30″) occurred on the 19th on one of
our lighter rainy days during the month. We had 6 days with freezing
minimums (probably a good bit below normal). There were 9 clear days,
13 partly cloudy days, and 8 cloudy days during the month. Not really
a month of many extremes though DCA and IAD came close to record
low temps on November 11. Whether that is any indication for the rest
of the winter remains to be seen.

There were 564 heating degree days (HDD) and 0 cooling degree days (CDD)
during the month. There were 4 days of fog during the month, but no days
with thunder as best I know of.

My maximum temperature frequencies included 2 days between 70° and 79°,
3 days between 60° and 69°, 16 days between 50° and 59°, 8 days between
40° and 49° and 1 day below 40°. On the minimum temperature frequency
side of things, there was 6 days between 20° and 29°,13 days between 30°
and 39°, 8 days between 40° and 49°, and 3 days between 50° and 59°.
The coolest daily max temp was 37.0° on the 11th and warmest daily min
temp was 53.6° on the 3rd.

The diurnal range daily monthly average was 16.8°. Our greatest daily range
of temperature was 35.2°, formed from a high of 60.3° and low of 25.1° on
a mostly sunny day on the 18th. There were 8 days total with daily ranges at
or above 20.0°.while our lowest range of temperature was 7.1° on a lightly
rainy day on the 5th, formed from a high temperature of 58.5° and a low
temperature of 51.4°. There were only a total of 3 days with minimum diurnal
temperature ranges less than 10.0°, a decrease of 2 over last month.

With yet another month to study the instrument changes made in mid-August,
data appears to be stable and an overall data quality improvement success. I
am still constantly checking on my data quality frequently along with some of
my Maryland weather cohorts. Winterizing of the gauges has mostly taken
place. Marty and I established a good location for the snowboards, and they
have already been put to use with a few light snows occurring so far in
December. I haven’t decided whether or not to move my cocorahs rain gauge
closer to the building to ease efforts for winter reading, especially during icy/
snowy periods. I have some spikes to put on my shoes that so far have worked
on a few icy street, sidewalk, and slippery snow/ice on grass occurrences when
traveling to and from my rain gauge. I now only have the outer cylinder in place
on my cocorahs gauge to minimize freezing of some of the parts of the gauge,
and to better catch snow for water equivalent purposes. Within the past week
Marty brought over a “snow stake” that we plunged into the ground near the
flagpoles so that with binoculars I can read the general snowfall accumulation
from my balcony. We shall see how that works out. I still will go out to the
snowboard as long as it is safe to take official measurements. Please ask me
any questions you want at any time about my station setup and/or my data
through any means available to you.

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Holiday Meeting December 13, 2017

Wednesday December 13, 2017

***6:30PM SHARP!***

Jim Witt And His Long Range Winter Forecast!

And Holiday Party Time!

RSVP Liz Pertidis 908-352-1876

By 12/10/17

Volunteers needed to bring Desert!

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September 2017 Reisterstown Maryland Monthly Summary for the NJWO Blog

Reisterstown Maryland Monthly Summary for September 2017
by Ray Muller, Observer in Charge

TEMPERATURES (Departure/Date/Time)
Average max 77.8° (- 1.2°)
Average min 58.2° (+ 2.2°)
Mean 68.0° (+ 0.5°)
Max 88° (24/1602)
Min 50° (10/0535)
Min Max 59° (02/1530)
Max Min 70° (25/0702)
Max in the 50s 1
Max in the 60s 3
Max in the 70s 11
Max in the 80s 15
Max in the 90s 0
Min in the 50s 13
Min in the 60s 16
Min in the 70s 1

PRECIPITATION (Departure/Date)
Monthly total 2.14″ (- 2.16″)
Year to date 38.24″ (+ 3.79″)
Max in 6 hrs 0.28″ (2)
Max in 12 hrs 0.48″ (2)
Max in 24 hrs 0.76″ (2)
Number of days of precipitation
>=.01″ = 9
>=.10″ = 3
>=.50″ = 2
>=1.00″= 0
>=2.00″= 0

WEATHER TYPES – number of days
Fog 15
Dense Fog 2
Haze 13
Thunder 2
Gale force winds 1
Damaging winds 0

CLOUD COVER (sunrise to sunset – number of days)
Clear 12
Partly cloudy 14
Cloudy 4
Average (sunrise to sunset) 4.4
Estimated percent of possible sunshine 67

BAROMETER
High 30.40” (10)
Low 29.72” (5)

WIND – DAYTIME (Sunrise to Sunset 0700-1900)
Prevailing direction 290°
Mean wind speed 6.7 MPH

HUMIDITY
Lowest humidity
32% at 1400 (23)

RAIN RATES
0.28” in 15 minutes (6)
0.20” in 14 minutes (2)

NOTES: Cloud types – number of days:
Stratiform 6
Cumulus 17
Cumulonimbus 2
Stratocumulus 15
Altocumulus 12
Altostratus 7
Cirrocumulus 4
Cirrostratus 8
Cirrus 15
Mammatus 0

Observed several days with towering cumulus

SUMMARY:
It was a dry month again with precipitation over
2 inches below normal, resulting in reservoirs
dropping to lower levels this month.
Field conditions were also quite dry.


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AUGUST 2017 CLIMATE STATISTICS AND SUMMARY FOR THE NJWO BLOG – ROCKVILLE 2.8 WNW MARYLAND by Kevin Shaw Observer

AUGUST 2017 – ROCKVILLE 2.8 WNW MARYLAND
CLIMATE STATISTICS FOR THE NJWO BLOG
by Kevin Shaw, Observer in charge

Average high temperature 81.8°
Average low temperature 66.0°
Mean temperature 73.9°

Precipitation 4.09″
Greatest daily amount(date) 0.96″ (11)
Snow 0.0″
Year to date precipitation 30.29″

High temperature for the month (date) 92° (18)
Low temperature for the month (date) 59° (30)

Highest barometric pressure (date) 30.26” (26)
Lowest barometric pressure (date) 29.73” (18)

Peak wind gust (date/direction): N/A

Heating degree days for the month: 2
Cooling degree days for the month: 277

Greatest diurnal range (date): 22.6° (9)
Least diurnal range (date) 5.2° (29)

Number of days:

Fog 5
Thunder 7
Cloudy 6
Partly Cloudy 19
Sunny/Clear 6
Max temp => 90° 4

AUGUST 2017 – BRIEF CLIMATE SUMMARY
ROCKVILLE 2.8 WNW MARYLAND
by Kevin Shaw, observer in charge

August 2017 was a bit cooler and drier than normal. The 4.09″ of rain this month
was less than half July’s amount, but at least nothing close to being abnormally
dry. 14 days with measurable rain was a bit above average and generally spread
fairly evenly throughout the month. Many of the wetter days of the month had max
temps in the 70s, and actually the coolest day of the month on the 29th (66°) had
one of the greater precipitation amounts for the month (0.55″). Glad to report of
only 4 days of max temps of 90 or greater (rounded to the nearest degree values).
The highest temp of the month of 91.6° was not really that high, but was made more
oppressive with the max dew point temperature of August of 81° reached on that
day (18). There were a total of 3 days where dew points remained above the 70°
mark all day. Conversely there were 13 days where the dew point fell into the 50s.
My lowest temperature for the month was 59.1°on the 30th, barely dipping below
the 60° the only time during the month. After 90° was reached on the 23rd, the
remaining days of the month mostly had days with max temps in the 70s, including
the one previously mentioned (66° on the rainy 29th)

The hottest period of the month (August 16-22) was when all but one day had max
temps above 85°, including 3 of the 4 days at or above 90° during the month. This
period was also quite dry, totalling only 0.18″ of rain.

There were 2 heating degree days (HDD) and 277 cooling degree days (CDD)
during the month.

My maximum temperature frequencies included 4 days of 90° or more, 14 days
between 80° and 89°, 12 days between 70° and 79°, and 1 day below 70°. On the
minimum temperature frequency side of things, there was 2 days below 60°, 22
days between 60° and 69°, and 7 days of 70° or over.

The diurnal range daily monthly average was 15.7°. Diurnal ranges were somewhat
supressed due to the abundance of cloudiness during the month, and real lack of
cool or hot days that always help. The maximum daily range of only 22.6°occurred
on the 9th (82.7°- 60.1°). There were only 4 days total with daily ranges at or above
20.0°. The lowest daily temperature range of 5.2° (66.0°- 60.8°) which occurred on
the 29th was the 5th wettest day of the month and by far the coolest max of the month.
Just like in July, there were only a total of 3 days with minimum daily temperature
ranges less than 10.0°.

My cocorahs (official) 4 inch rain gauge was moved mid-month (on the 16th) which I
hope will provide hassle free and more accurate readings from that point forward.
Also the VP2 tipping bucket rain gauge was re-attached to the housing on the VP2
sensor suite, and though not sited perfectly, at least it gives me a good indication
that it did rain and the timing of the rain which now shows up in my weatherlink
software. Please ask me any questions you want at any time through any means
you can.

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August 2017 Reisterstown Maryland Monthly Summary for the NJWO Blog

AUGUST 2017 REISTERSTOWN MARYLAND MONTHLY SUMMARY FOR THE NJWO BLOG
by Ray Muller, Observer in Charge

TEMPERATURE (Departure/Time/Date)
Average max 82.1° (- 3.7°)
Average min 64.2° (- 0.5°)
Mean 73.3° (- 1.7°)
Max 92° (16:22/22)
Min 56° (06:07/28)
Min Max 67° (15:36/29)
Max Min 72° (06:41/22)
Max in the 60s 1
Max in the 70s 13
Max in the 80s 15
Max in the 90s 2
Min in the 50s 4
Min in the 60s 22
Min in the 70s 5

PRECIPITATION (Departure/Date)
Monthly total 5.54″ (+ 1.77″)
Year to date 36.10″ (+ 5.95″)
Max in 6 hrs 0.46″ (15)
Max in 12 hrs 1.16″ (15)
Max in 24 hrs 1.62″ (15)
Number of days of precipitation
>= .01″ = 15
>= .10″ = 8
>= .50″ = 3
>= 1.00″ = 1
>= 2.00″ = 0

WEATHER TYPES – number of days
Fog 13
Haze 9
Dense fog 2
Thunder 7
Smoke 1
Gale force winds 0
Damaging winds 0

CLOUD COVER (sunrise to sunset – number of days)
Clear 7
Partly cloudy 13
Cloudy 11
Average (sunrise to sunset) 5.6

REMARKS
1900 Barometer values (observed)
High 30.23” (9)
Low 29.88” (22)
Wind
2 minute fastest mile 24 MPH from 280° @ 10:43 on the 4th
Peak wind gust 32 MPH from the West @ 10:43 on the 4th
Lowest humidity
42% at 1500 (26)
Rain rate
.25” in 15 minutes (15)
Notes: Heavy rain on the 15th caused some ponding of water
and street flooding noted at the City Office. New Max/Min
thermometers were used to check against the LaCrosse
Hygrothermometer unit and radiation shield. Checks yielded
very good temperature comparisons. This temperature data
will now be included in NJWO monthly summaries and in
Cocorahs to reflect good comparative results with other
nearby stations.

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July 2017 Rockville 2.8 WNW Maryland Weather Summary for the NJWO Blog

JULY 2017 – ROCKVILLE 2.8 WNW MARYLAND
CLIMATE STATISTICS FOR THE NJWO BLOG
by Kevin Shaw, Observer in charge

Average high temperature 87.3°
Average low temperature 70.9°
Mean temperature 79.1°

Precipitation 8.65″
Greatest daily amount(date) 2.92″ (28)
Snow 0.0″
Year to date precipitation 26.20″

High temperature for the month (date) 94° (21)
Low temperature for the month (date) 61° (31)

Highest barometric pressure (date) 30.23” (26)
Lowest barometric pressure (date) 29.65” (29)

Peak wind gust (date/direction): N/A

Heating degree days for the month: 0
Cooling degree days for the month: 438

Greatest diurnal range (date): 26.5° (31)
Least diurnal range (date) 6.7° (6)

Number of days:

Fog 4
Thunder: 5
Cloudy 6
Partly Cloudy 16
Sunny/Clear 9
Max temp => 90° 13

JULY 2017 – BRIEF CLIMATE SUMMARY
ROCKVILLE 2.8 WNW MARYLAND
by Kevin Shaw, observer in charge

July 2017 was a bit warmer than normal and definitely wetter than normal. The 8.65″ of rain this month was easily my wettest month of the year, and the 2.92″ of rain that fell on the 28th was not only the wettest day of the month, but it was easily the wettest day of the year so far. 13 days with measurable rain was a bit above average, but nothing really earth-shaking.Three of the wetter days of the month had max temps in the 70s, including the lowest of the month of 73.7° on the 29th, my 67th birthday. To me, this was better weather for my birthday than usual. Coincidentally there were also 13 days with max temps of 90° or greater, nothing unusual and certainly not related to the same amount of measurable rain days. The highest temp of the month of 93.7° was not really that high, though plenty oppressive with the usual +70° dew point temperatures all day. There were a total of 7 days where dew points remained above the 70° mark. Conversely there also were 7 days where the dew point reached down into the 50s. 5 days hit the max dew point value for the month of 78°. As has been the usual trend the past several years
stretching back to my old station, my lowest temperature for the month of 60.7° on the 31st, staying above the 60° mark all month. We used to get minimum temperatures well down into the 50s every July back several years ago, and even occasionally into the 40s.

The coolest temperatures of the month occurred right at the end of the month, after our biggest rain on the 28th and 29th. The hottest period of the month (July 11-22) was when all days had max temps above 85°, including 10 days above 90°. This period was also quite dry, totaling only 0.86″ of rain through the 21st, then a 2 day period on the 22nd and 23rd put an end to this modest heat wave/drier spell with 1.67″ of welcome rain.

There were no heating degree days (HDD) and 438 cooling degree days (CDD) during the month.

My maximum temperature frequencies included 13 days of 90° or more, 14 days between 80° and 89°, and 4 days between 70° and 79° On the minimum
temperature frequency side of things, there were 7 days between 60° and 69°, and 24 days of 70° or over.

The diurnal range daily monthly average was 16.5°. I moved my temperature sensor down to ground level at the beginning of the month, so I suspect these diurnal ranges will increase some in the coming months. The maximum daily range of 26.5° occurred on the 31st (87.2°-
60.7°). There were 5 days total with daily ranges at or above 20.0°. The lowest daily temperature range of 6.7° (78.8°- 72.1°) which occurred on the 6th interestingly enough occurred on the wettest day of the month (0.95″) till the 28th’s monster total. There were only a total of 3 days with minimum daily temperature ranges less than 10.0°.

Thankfully, the last third of the month was cooler and wetter, putting a halt on a potential drought situation which had increased to moderate levels. Major improvements to my instrument sitings have occurred recently as already mentioned. In addition, my ground-based cocorahs rain gauge site finally has been situated off property and definitely away from sprinklers. Please ask me any questions you want at any time through any means you can.


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July 2017 Reisterstown Maryland Monthly Summary for the NJWO Blog

Reisterstown Maryland Monthly Summary for July 2017
by Ray Muller, Observer in Charge

PRECIPITATION (Departure/Date)
Monthly total 9.28″ (+ 5.15″)
Year to date 30.56″ (+ 4.18″)
Max in 12 hrs 0.89″ (17)
Max in 24 hrs 2.23″ (17)
Number of days of precipitation
>= .01″ = 15
>= .10″ = 9
>= .50″ = 5
>= 1.00″ = 2
>= 2.00″ = 2

WEATHER TYPES – number of days
Fog 16
Haze 8
Dense fog 0
Thunder 7
Gale force winds 3
Damaging winds 0

CLOUD COVER (sunrise to sunset – number of days)
Clear 9
Partly cloudy 10
Cloudy 12

REMARKS
Observed temperatures
7 AM 58° (30)
4 PM 93° (20)

1900 Barometer values (observed)
High 30.14” (5)
Low 29.82” (23)

Beaufort wind
Force 8 (1) from the West
Force 8 (17) from the Southeast

Lowest humidity
36% at 1300 (9)

Rain rates
.46” in 15 minutes (6)
.52” in 18 minutes (17)
.41” in 20 minutes (28)

Notes: Precipitation was well above normal for the month and now above normal for the year.
Reservoirs had gone down by the middle of the month, however with heavy rains on the 17th, 25th,
28th and 29th the reservoirs were back up to normal due to heavy rainfall on those dates.

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June 2017 NJWO Blog Climate report (page 2 of 2) for Rockville 2.8 WNW Maryland by Kevin Shaw Observer

JUNE 2017 – BRIEF CLIMATE SUMMARY
ROCKVILLE 2.8 WNW MARYLAND
for the NJWO Blog by Kevin Shaw, Observer in Charge

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