Station Overview | Station Location | ||
---|---|---|---|
Station Number | MD-MG-62 | Latitude | 39.08527 |
Station Name | Rockville 1.8 W | Longitude | -77.1873 |
County | Montgomery | Elevation (ft) | 422 |
Month | 30 Yr Avg by PRISM | Total Prcp Sum | Days Covered By All Observations | Daily Prcp Sum | Daily Observation Count | Multiday Prcp Sum | Days Covered by Multiday Observations | Multiday Observation Count | Days With Prcp | Days With Trace | Total Snowfall | Days With Snowfall | Days With Snow On Ground |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Oct 09 | 3.41 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
Nov 09 | 3.57 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
Dec 09 | 3.09 | 1.63 | 2 | 1.63 | 2 | 0.00 | 0 | 0 | 2 | 0 | 21.0 | 2 | 2 |
Jan 10 | 2.89 | 2.09 | 20 | 2.09 | 20 | 0.00 | 0 | 0 | 10 | 0 | 10.2 | 4 | 8 |
Feb 10 | 2.72 | 4.27 | 6 | 4.27 | 6 | 0.00 | 0 | 0 | 6 | 0 | 48.4 | 6 | 6 |
March 10 | 3.70 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
April 10 | 3.28 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
May 10 | 4.20 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
June 10 | 3.77 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
July 10 | 3.87 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
Aug 10 | 3.18 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
Sept 10 | 3.99 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
Water Year Totals: | 41.67" | 7.99" | 28 days | 7.99" | 28 | 0.00" | 0 days | 0 | 18 days | 0 days | 79.6" | 12 days | 16 days |
Days in Water Year Cell Color Key | |||
---|---|---|---|
Daily Observation with Prcp | Missing Day | ||
Multiday Observation | Daily/Multiday Observation Conflict |
Day of Year | Daily Prcp | Multiday Prcp |
---|---|---|
10/1/2009 | ||
10/2/2009 | ||
10/3/2009 | ||
10/4/2009 | ||
10/5/2009 | ||
10/6/2009 | ||
10/7/2009 | ||
10/8/2009 | ||
10/9/2009 | ||
10/10/2009 | ||
10/11/2009 | ||
10/12/2009 | ||
10/13/2009 | ||
10/14/2009 | ||
10/15/2009 | ||
10/16/2009 | ||
10/17/2009 | ||
10/18/2009 | ||
10/19/2009 | ||
10/20/2009 | ||
10/21/2009 | ||
10/22/2009 | ||
10/23/2009 | ||
10/24/2009 | ||
10/25/2009 | ||
10/26/2009 | ||
10/27/2009 | ||
10/28/2009 | ||
10/29/2009 | ||
10/30/2009 | ||
10/31/2009 | ||
11/1/2009 | ||
11/2/2009 | ||
11/3/2009 | ||
11/4/2009 | ||
11/5/2009 | ||
11/6/2009 | ||
11/7/2009 | ||
11/8/2009 | ||
11/9/2009 | ||
11/10/2009 | ||
11/11/2009 | ||
11/12/2009 | ||
11/13/2009 | ||
11/14/2009 | ||
11/15/2009 | ||
11/16/2009 | ||
11/17/2009 | ||
11/18/2009 | ||
11/19/2009 | ||
11/20/2009 | ||
11/21/2009 | ||
11/22/2009 | ||
11/23/2009 | ||
11/24/2009 | ||
11/25/2009 | ||
11/26/2009 | ||
11/27/2009 | ||
11/28/2009 | ||
11/29/2009 | ||
11/30/2009 | ||
12/1/2009 | ||
12/2/2009 | ||
12/3/2009 | ||
12/4/2009 | ||
12/5/2009 | ||
12/6/2009 | ||
12/7/2009 | ||
12/8/2009 | ||
12/9/2009 | ||
12/10/2009 | ||
12/11/2009 | ||
12/12/2009 | ||
12/13/2009 | ||
12/14/2009 | ||
12/15/2009 | ||
12/16/2009 | ||
12/17/2009 | ||
12/18/2009 | ||
12/19/2009 | 0.59 | |
12/20/2009 | 1.04 | |
12/21/2009 | ||
12/22/2009 | ||
12/23/2009 | ||
12/24/2009 | ||
12/25/2009 | ||
12/26/2009 | ||
12/27/2009 | ||
12/28/2009 | ||
12/29/2009 | ||
12/30/2009 | ||
12/31/2009 |
Day of Year | Daily Prcp | Multiday Prcp |
---|---|---|
1/1/2010 | 0.44 | |
1/2/2010 | 0.00 | |
1/3/2010 | 0.00 | |
1/4/2010 | 0.00 | |
1/5/2010 | 0.00 | |
1/6/2010 | 0.00 | |
1/7/2010 | 0.00 | |
1/8/2010 | 0.11 | |
1/9/2010 | 0.00 | |
1/10/2010 | 0.00 | |
1/11/2010 | 0.00 | |
1/12/2010 | 0.00 | |
1/13/2010 | ||
1/14/2010 | ||
1/15/2010 | ||
1/16/2010 | ||
1/17/2010 | ||
1/18/2010 | 0.69 | |
1/19/2010 | ||
1/20/2010 | ||
1/21/2010 | 0.05 | |
1/22/2010 | 0.13 | |
1/23/2010 | 0.07 | |
1/24/2010 | ||
1/25/2010 | 0.22 | |
1/26/2010 | 0.02 | |
1/27/2010 | 0.02 | |
1/28/2010 | ||
1/29/2010 | ||
1/30/2010 | ||
1/31/2010 | 0.34 | |
2/1/2010 | ||
2/2/2010 | ||
2/3/2010 | 0.30 | |
2/4/2010 | ||
2/5/2010 | ||
2/6/2010 | 2.34 | |
2/7/2010 | 0.51 | |
2/8/2010 | ||
2/9/2010 | ||
2/10/2010 | 0.50 | |
2/11/2010 | 0.59 | |
2/12/2010 | ||
2/13/2010 | ||
2/14/2010 | ||
2/15/2010 | ||
2/16/2010 | 0.03 | |
2/17/2010 | ||
2/18/2010 | ||
2/19/2010 | ||
2/20/2010 | ||
2/21/2010 | ||
2/22/2010 | ||
2/23/2010 | ||
2/24/2010 | ||
2/25/2010 | ||
2/26/2010 | ||
2/27/2010 | ||
2/28/2010 | ||
3/1/2010 | ||
3/2/2010 | ||
3/3/2010 | ||
3/4/2010 | ||
3/5/2010 | ||
3/6/2010 | ||
3/7/2010 | ||
3/8/2010 | ||
3/9/2010 | ||
3/10/2010 | ||
3/11/2010 | ||
3/12/2010 | ||
3/13/2010 | ||
3/14/2010 | ||
3/15/2010 | ||
3/16/2010 | ||
3/17/2010 | ||
3/18/2010 | ||
3/19/2010 | ||
3/20/2010 | ||
3/21/2010 | ||
3/22/2010 | ||
3/23/2010 | ||
3/24/2010 | ||
3/25/2010 | ||
3/26/2010 | ||
3/27/2010 | ||
3/28/2010 | ||
3/29/2010 | ||
3/30/2010 | ||
3/31/2010 |
Day of Year | Daily Prcp | Multiday Prcp |
---|---|---|
4/1/2010 | ||
4/2/2010 | ||
4/3/2010 | ||
4/4/2010 | ||
4/5/2010 | ||
4/6/2010 | ||
4/7/2010 | ||
4/8/2010 | ||
4/9/2010 | ||
4/10/2010 | ||
4/11/2010 | ||
4/12/2010 | ||
4/13/2010 | ||
4/14/2010 | ||
4/15/2010 | ||
4/16/2010 | ||
4/17/2010 | ||
4/18/2010 | ||
4/19/2010 | ||
4/20/2010 | ||
4/21/2010 | ||
4/22/2010 | ||
4/23/2010 | ||
4/24/2010 | ||
4/25/2010 | ||
4/26/2010 | ||
4/27/2010 | ||
4/28/2010 | ||
4/29/2010 | ||
4/30/2010 | ||
5/1/2010 | ||
5/2/2010 | ||
5/3/2010 | ||
5/4/2010 | ||
5/5/2010 | ||
5/6/2010 | ||
5/7/2010 | ||
5/8/2010 | ||
5/9/2010 | ||
5/10/2010 | ||
5/11/2010 | ||
5/12/2010 | ||
5/13/2010 | ||
5/14/2010 | ||
5/15/2010 | ||
5/16/2010 | ||
5/17/2010 | ||
5/18/2010 | ||
5/19/2010 | ||
5/20/2010 | ||
5/21/2010 | ||
5/22/2010 | ||
5/23/2010 | ||
5/24/2010 | ||
5/25/2010 | ||
5/26/2010 | ||
5/27/2010 | ||
5/28/2010 | ||
5/29/2010 | ||
5/30/2010 | ||
5/31/2010 | ||
6/1/2010 | ||
6/2/2010 | ||
6/3/2010 | ||
6/4/2010 | ||
6/5/2010 | ||
6/6/2010 | ||
6/7/2010 | ||
6/8/2010 | ||
6/9/2010 | ||
6/10/2010 | ||
6/11/2010 | ||
6/12/2010 | ||
6/13/2010 | ||
6/14/2010 | ||
6/15/2010 | ||
6/16/2010 | ||
6/17/2010 | ||
6/18/2010 | ||
6/19/2010 | ||
6/20/2010 | ||
6/21/2010 | ||
6/22/2010 | ||
6/23/2010 | ||
6/24/2010 | ||
6/25/2010 | ||
6/26/2010 | ||
6/27/2010 | ||
6/28/2010 | ||
6/29/2010 | ||
6/30/2010 |
Day of Year | Daily Prcp | Multiday Prcp |
---|---|---|
7/1/2010 | ||
7/2/2010 | ||
7/3/2010 | ||
7/4/2010 | ||
7/5/2010 | ||
7/6/2010 | ||
7/7/2010 | ||
7/8/2010 | ||
7/9/2010 | ||
7/10/2010 | ||
7/11/2010 | ||
7/12/2010 | ||
7/13/2010 | ||
7/14/2010 | ||
7/15/2010 | ||
7/16/2010 | ||
7/17/2010 | ||
7/18/2010 | ||
7/19/2010 | ||
7/20/2010 | ||
7/21/2010 | ||
7/22/2010 | ||
7/23/2010 | ||
7/24/2010 | ||
7/25/2010 | ||
7/26/2010 | ||
7/27/2010 | ||
7/28/2010 | ||
7/29/2010 | ||
7/30/2010 | ||
7/31/2010 | ||
8/1/2010 | ||
8/2/2010 | ||
8/3/2010 | ||
8/4/2010 | ||
8/5/2010 | ||
8/6/2010 | ||
8/7/2010 | ||
8/8/2010 | ||
8/9/2010 | ||
8/10/2010 | ||
8/11/2010 | ||
8/12/2010 | ||
8/13/2010 | ||
8/14/2010 | ||
8/15/2010 | ||
8/16/2010 | ||
8/17/2010 | ||
8/18/2010 | ||
8/19/2010 | ||
8/20/2010 | ||
8/21/2010 | ||
8/22/2010 | ||
8/23/2010 | ||
8/24/2010 | ||
8/25/2010 | ||
8/26/2010 | ||
8/27/2010 | ||
8/28/2010 | ||
8/29/2010 | ||
8/30/2010 | ||
8/31/2010 | ||
9/1/2010 | ||
9/2/2010 | ||
9/3/2010 | ||
9/4/2010 | ||
9/5/2010 | ||
9/6/2010 | ||
9/7/2010 | ||
9/8/2010 | ||
9/9/2010 | ||
9/10/2010 | ||
9/11/2010 | ||
9/12/2010 | ||
9/13/2010 | ||
9/14/2010 | ||
9/15/2010 | ||
9/16/2010 | ||
9/17/2010 | ||
9/18/2010 | ||
9/19/2010 | ||
9/20/2010 | ||
9/21/2010 | ||
9/22/2010 | ||
9/23/2010 | ||
9/24/2010 | ||
9/25/2010 | ||
9/26/2010 | ||
9/27/2010 | ||
9/28/2010 | ||
9/29/2010 | ||
9/30/2010 |
Observation Date | Observation Time | Precipitation | Snowfall | Snowfall SWE | Snow Depth | Snow SWE | Notes |
---|---|---|---|---|---|---|---|
12/19/2009 | 7:00 AM | 0.59 | 7.8 | M | 7.0 | M | [Details forthcoming as of 2010/01/13] |
12/20/2009 | 7:00 AM | 1.04 | 13.2 | M | 16.5 | M | Greatest December Snowfall in Rockville, MD since early 1800s. Snow ended 1140P...then ZL--/ZL- 230-315A, no glazing seen. [Additional details forthcoming as of 2010/01/13]. |
1/1/2010 | 12:00 AM | 0.44 | 1.3 | M | 1.0 | M | On 31st: -FZRA/-PL B~320A...to -SN/SN predawn before ending ~700A...then stray drop/-SP/PL- 1200P-400P, --RA to -RA 400P-late evening. |
1/2/2010 | 7:00 AM | 0.00 | 0.0 | M | 0.5 | M | |
1/3/2010 | 7:00 AM | 0.00 | 0.0 | M | T | M | |
1/4/2010 | 7:00 AM | 0.00 | 0.0 | M | T | M | |
1/5/2010 | 7:00 AM | 0.00 | 0.0 | M | T | M | |
1/6/2010 | 7:00 AM | 0.00 | 0.0 | M | T | M | |
1/7/2010 | 7:00 AM | 0.00 | 0.0 | M | T | M | |
1/8/2010 | 7:00 AM | 0.11 | 2.7 | 0.11 | 2.5 | M | On 7th: S- B~930P, continuing thru mdnt. 12:1 SLR.....On 8th: Snow E~430A, but not before an impressive period of S with huge fluffy flakes, 200-415A. 29:1 SLR.....Storm Total SLR 25:1. |
1/9/2010 | 7:00 AM | 0.00 | 0.0 | M | 1.5 | M | |
1/10/2010 | 7:00 AM | 0.00 | 0.0 | M | 1.0 | M | |
1/11/2010 | 7:00 AM | 0.00 | 0.0 | M | 0.5 | M | |
1/12/2010 | 7:00 AM | 0.00 | 0.0 | M | 0.5 | M | |
1/18/2010 | 6:00 AM | 0.69 | 0.0 | M | 0.0 | M | On 17th: -RA/ocnl RA 630A-1030P |
1/21/2010 | 12:00 AM | 0.05 | T | M | M | M | On 20th: -RA/-DZ 300-715A, including period of -PL 530-545A. Note "New Snowfall" total is only sleet |
1/22/2010 | 12:00 AM | 0.13 | T | M | M | M | On 21st: -RA w/ocnl -PL/(and maybe some -SN?) 745P-Obs. |
1/23/2010 | 12:00 AM | 0.07 | T | M | M | M | On 22nd: -RA/(ocnl mixing with -PL?) Mdnt-200P. Note: "New snowfall" is sleet and only sleet. |
1/25/2010 | 12:00 AM | 0.22 | 0.0 | M | 0.0 | M | On 24th: -SH RA's/-RA 830-1130A, 430-900P...then -RA/(RA?) 900P-Obs |
1/26/2010 | 12:00 AM | 0.02 | 0.0 | M | 0.0 | M | On 25th: -RA Mdnt-1030A...then --SH RA's 400-1100P |
1/27/2010 | 7:00 AM | 0.02 | 0.1 | M | 0.0 | M | On 26th: Couple snow pellet showers ~300-400PM, then occ. RW-/sprinkles into early evening. |
1/31/2010 | 7:00 AM | 0.34 | 6.1 | M | 4.5 | M | On 30th: -SN/SN 915A-500P, keyed on by SN 1000-1100A & 300-400P...then -SN/--SN 500-1115P. Mixed w/snow pellets at onset. SLR 18:1...||...Further Notes: great dendrites 115P-end...915A-100P (0.16", 2.3", 14:1 SLR), then 100-11115P (0.18", 3.8", 21:1 SLR). |
2/3/2010 | 7:00 AM | 0.30 | 5.4 | M | 6.0 | M | On 2nd: A few flakes 500-505P, then S- B~530P. At onset snow melted as it fell, but began sticking to pavement 600-645PM, but measured 0.2" on car top at 600P. Slowly increasing in intensity to period of S 930-1150P.....On 3rd: S- until a good burst of S right before ending ~500A.....**TO NOTE**: Liquid precipitation on 2nd is estimated as a chunk of snow fell off top of gauge. |
2/6/2010 | 7:00 AM | 2.34 | 22.5 | M | 21.0 | M | On 5th: Few flakes 1028-1045AM, then continuous S- from 1045A on...Small, wet flakes with visibility dropping around 1140A...Snow lighter in intensity at 100P, but increasing again at 115P...Thin, patchy shades of slush appear on pavement 120-200PM...Period of S/occ. S+ (visibility < 1/4 mile) from some great dendrites 240-425P...Back to S- after 425P, with smaller/wetter flakes/maybe some snow pellets? ...Temp finally =32.0 deg at 430P...[From 1030A-600P: estimated 1.9" (240-425P), at ~15:1 ratio and 1.1"/hr ..summed with..another 1.9" at ~8:1 ratio otherwise.]...S/occ. S+ 600-900P...S+ 900P-Mdnt...Lightning to west @ 1040P, thunder possibly.......On 6th: S/S+ Mdnt-600A...Lightning & Thunder @ 1210A. Large pine tree branches snap off from weight of snow ~130A...S-/S 600-OBS...Wind Data: not as windy at 300A...light winds 430-OBS.....9.6:1 SLR. |
2/7/2010 | 7:00 AM | 0.51 | 6.7 | M | 22.0 | M | S-/S OBS-900A...S+/S 900A-1200P...S-/occ. S 1200P-500P.....Wind data: light winds OBS-800A...near calm 900-1000A. 13:1 SLR, but 10.2:1 SLR for entire storm.....Greatest snowfall on record at site since Jan 1772. |
2/10/2010 | 7:00 AM | 0.50 | 4.7 | M | 24.0 | M | |
2/11/2010 | 7:00 AM | 0.59 | 8.8 | M | 29.0 | M | |
2/16/2010 | 7:00 AM | 0.03 | 0.3 | M | 18.0 | M | S- 215-430P. Snow melted as it fell, with 0.3" coming from snow cover. Patchy glaze in evening. SLR ~10:1 |
Start Date | End Date & Time | Duration in Days | Precipitation | Snow Depth | Snow Depth SWE | Notes |
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Observation Date | Observation Time | Notes | Largest Stone Size | Average Stone Size | Smallest Stone Size | Stone Consistency | Duration Minutes | Durration Accuracy | Damage | Timing | More Rain than Hail | Hail Started | Largest Hail Started | Angle of Impact | Number of Stones on Pad | Distance Between Stones on Pad | Depth of Stones on Ground |
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