Station Overview Station Location
Station Number MD-CV-1 Latitude 38.741818
Station Name Marlton 6.0 E Longitude -76.680712
County Calvert Elevation (ft) 39



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 18 3.50 4.66 6 4.66 6 0.00 0 0 6 0 0.0 0 0
Nov 18 3.39 6.00 7 6.00 7 0.00 0 0 7 0 0.6 2 0
Dec 18 3.35 3.09 7 3.09 7 0.00 0 0 7 0 0.2 1 0
Jan 19 3.05 3.19 12 3.19 12 0.00 0 0 12 0 9.8 3 3
Feb 19 2.80 3.25 11 3.25 11 0.00 0 0 11 0 3.7 4 3
March 19 3.82 3.56 8 3.56 8 0.00 0 0 8 0 0.5 2 0
April 19 3.32 1.33 6 1.33 6 0.00 0 0 6 0 0.0 0 0
May 19 4.23 7.52 13 7.52 13 0.00 0 0 13 0 0.0 0 0
June 19 3.91 6.03 12 6.03 12 0.00 0 0 12 0 0.0 0 0
July 19 4.00 5.55 7 5.55 7 0.00 0 0 7 0 0.0 0 0
Aug 19 3.49 1.84 13 1.84 13 0.00 0 0 10 3 0.0 0 0
Sept 19 3.83 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 42.69" 46.02" 102 days 46.02" 102 0.00" 0 days 0 99 days 3 days 14.8" 12 days 6 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
10/1/2018
10/2/2018
10/3/2018
10/4/2018
10/5/2018
10/6/2018
10/7/2018
10/8/2018
10/9/2018
10/10/2018
10/11/2018
10/12/2018 4.10
10/13/2018 0.03
10/14/2018
10/15/2018 0.11
10/16/2018 0.02
10/17/2018
10/18/2018
10/19/2018
10/20/2018 0.07
10/21/2018 0.33
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018
10/28/2018
10/29/2018
10/30/2018
10/31/2018
11/1/2018
11/2/2018
11/3/2018 1.08
11/4/2018
11/5/2018
11/6/2018
11/7/2018 0.59
11/8/2018
11/9/2018
11/10/2018 0.53
11/11/2018
11/12/2018
11/13/2018 0.82
11/14/2018
11/15/2018 0.03
11/16/2018 1.44
11/17/2018
11/18/2018
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018 1.51
11/26/2018
11/27/2018
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018
12/3/2018
12/4/2018
12/5/2018
12/6/2018
12/7/2018
12/8/2018
12/9/2018
12/10/2018 0.02
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018 0.51
12/16/2018 1.15
12/17/2018 0.46
12/18/2018
12/19/2018
12/20/2018
12/21/2018 0.87
12/22/2018 0.05
12/23/2018
12/24/2018 0.03
12/25/2018
12/26/2018
12/27/2018
12/28/2018
12/29/2018
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.32
1/2/2019
1/3/2019 0.02
1/4/2019
1/5/2019 0.14
1/6/2019 0.02
1/7/2019
1/8/2019 0.07
1/9/2019 0.09
1/10/2019
1/11/2019
1/12/2019
1/13/2019 0.48
1/14/2019 0.40
1/15/2019
1/16/2019
1/17/2019
1/18/2019 0.08
1/19/2019
1/20/2019 0.52
1/21/2019
1/22/2019
1/23/2019
1/24/2019
1/25/2019 0.83
1/26/2019
1/27/2019
1/28/2019
1/29/2019
1/30/2019 0.22
1/31/2019
2/1/2019
2/2/2019 0.05
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019 0.02
2/8/2019
2/9/2019
2/10/2019
2/11/2019 0.33
2/12/2019 0.23
2/13/2019 0.43
2/14/2019
2/15/2019
2/16/2019
2/17/2019
2/18/2019 0.51
2/19/2019
2/20/2019 0.06
2/21/2019 0.62
2/22/2019 0.02
2/23/2019
2/24/2019 0.94
2/25/2019 0.04
2/26/2019
2/27/2019
2/28/2019
3/1/2019 0.16
3/2/2019 0.55
3/3/2019
3/4/2019 0.58
3/5/2019
3/6/2019
3/7/2019
3/8/2019
3/9/2019 0.19
3/10/2019 0.39
3/11/2019
3/12/2019
3/13/2019
3/14/2019
3/15/2019
3/16/2019
3/17/2019
3/18/2019
3/19/2019
3/20/2019
3/21/2019 0.12
3/22/2019 1.43
3/23/2019 0.14
3/24/2019
3/25/2019
3/26/2019
3/27/2019
3/28/2019
3/29/2019
3/30/2019
3/31/2019
Day of YearDaily PrcpMultiday Prcp
4/1/2019
4/2/2019
4/3/2019
4/4/2019
4/5/2019
4/6/2019
4/7/2019
4/8/2019
4/9/2019
4/10/2019
4/11/2019
4/12/2019
4/13/2019 0.31
4/14/2019 0.07
4/15/2019 0.36
4/16/2019
4/17/2019
4/18/2019
4/19/2019
4/20/2019 0.22
4/21/2019
4/22/2019
4/23/2019
4/24/2019
4/25/2019
4/26/2019
4/27/2019 0.32
4/28/2019 0.05
4/29/2019
4/30/2019
5/1/2019
5/2/2019
5/3/2019 1.07
5/4/2019
5/5/2019 0.52
5/6/2019 1.05
5/7/2019
5/8/2019
5/9/2019
5/10/2019
5/11/2019 0.72
5/12/2019 0.23
5/13/2019 0.85
5/14/2019 0.24
5/15/2019
5/16/2019
5/17/2019
5/18/2019
5/19/2019 0.68
5/20/2019
5/21/2019
5/22/2019
5/23/2019
5/24/2019 0.37
5/25/2019
5/26/2019 0.05
5/27/2019 1.02
5/28/2019
5/29/2019 0.06
5/30/2019
5/31/2019 0.66
6/1/2019
6/2/2019
6/3/2019 0.03
6/4/2019
6/5/2019
6/6/2019 0.03
6/7/2019
6/8/2019
6/9/2019
6/10/2019 0.58
6/11/2019 0.16
6/12/2019
6/13/2019 2.20
6/14/2019 0.03
6/15/2019
6/16/2019
6/17/2019
6/18/2019 1.58
6/19/2019 0.92
6/20/2019 0.03
6/21/2019 0.33
6/22/2019
6/23/2019
6/24/2019
6/25/2019 0.09
6/26/2019
6/27/2019
6/28/2019
6/29/2019
6/30/2019 0.05
Day of YearDaily PrcpMultiday Prcp
7/1/2019
7/2/2019
7/3/2019 0.29
7/4/2019
7/5/2019 0.45
7/6/2019
7/7/2019 0.41
7/8/2019 0.20
7/9/2019 2.95
7/10/2019
7/11/2019
7/12/2019 1.12
7/13/2019
7/14/2019
7/15/2019
7/16/2019
7/17/2019
7/18/2019 0.13
7/19/2019
7/20/2019
7/21/2019
7/22/2019
7/23/2019
7/24/2019
7/25/2019
7/26/2019
7/27/2019
7/28/2019
7/29/2019
7/30/2019
7/31/2019
8/1/2019 0.08
8/2/2019 0.64
8/3/2019 0.04
8/4/2019
8/5/2019
8/6/2019 0.02
8/7/2019
8/8/2019 T
8/9/2019
8/10/2019 0.09
8/11/2019
8/12/2019
8/13/2019
8/14/2019 0.07
8/15/2019
8/16/2019 T
8/17/2019
8/18/2019 T
8/19/2019
8/20/2019 0.05
8/21/2019 0.15
8/22/2019 0.04
8/23/2019
8/24/2019 0.66
8/25/2019
8/26/2019
8/27/2019
8/28/2019
8/29/2019
8/30/2019
8/31/2019
9/1/2019
9/2/2019
9/3/2019
9/4/2019
9/5/2019
9/6/2019
9/7/2019
9/8/2019
9/9/2019
9/10/2019
9/11/2019
9/12/2019
9/13/2019
9/14/2019
9/15/2019
9/16/2019
9/17/2019
9/18/2019
9/19/2019
9/20/2019
9/21/2019
9/22/2019
9/23/2019
9/24/2019
9/25/2019
9/26/2019
9/27/2019
9/28/2019
9/29/2019
9/30/2019



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/12/2018 7:00 AM 4.10 M M M M Ocnl aftn RW-. TRW+ then R+ eve gradually tapering off and ending early overnight.
10/13/2018 9:00 AM 0.03 M M M M Early mrng R-.
10/15/2018 8:00 AM 0.11 M M M M Early mrng R-. 4.24" MTD.
10/16/2018 7:00 AM 0.02 M M M M Ocnl RW-.
10/20/2018 7:00 AM 0.07 M M M M Overnight R-.
10/21/2018 7:00 AM 0.33 M M M M Eve RW+. 4.66" MTD.
11/3/2018 7:00 AM 1.08 M M M M Eve RW- then TRW+ then early overnight RW-. 1.88" Oct. 26-27 event. 6.54" Oct. precip total. 61.84" YTD!
11/7/2018 7:00 AM 0.59 M M M M Mrng R. Ocnl aftn RW-. 1.88" R+ Mon. 3.38" MTD. 64.14" YTD!
11/10/2018 7:00 AM 0.53 M M M M Aftn R-/R tapering off to L- late day/early eve. 3.91" MTD. 64.67" YTD!
11/13/2018 7:00 AM 0.82 M M M M Eve/overnight R-/R.
11/15/2018 7:00 AM 0.03 0.2 M M M Early mrng S-/IP-. Caw caw!
11/16/2018 7:00 AM 1.44 0.4 M 0.0 M Early mrng S- briefly S turning to IP- then R-/R later in mrng thru early overnight. 1.47" LWE Event total. 0.6" S/IP total accumulation. 6.20" LWE MTD. 66.96" YTD!
11/25/2018 7:00 AM 1.51 M M M M Mainly aftn R-/R/R+. 7.71" MTD! 68.47" YTD!
12/10/2018 7:00 AM 0.02 0.2 M 0.0 M Early eve S-. 0.26" LWE MTD.
12/15/2018 7:00 AM 0.51 M M M M Ocnl late aftn RW-. Eve R-/R tapering off then redeveloping later overnight into morning.
12/16/2018 8:00 AM 1.15 M M M M Persistent R-/R.
12/17/2018 7:00 AM 0.46 M M M M Mrng/early aftn R-/R tapering off then ending later in aftn. 2.12" Event total. 2.38" LWE MTD. 71.29" YTD!
12/21/2018 7:00 AM 0.87 M M M M R- Ocnly R late morning thru overnight. 3.25" LWE MTD. 72.16" YTD!
12/22/2018 7:00 AM 0.05 M M M M Ocnl RW- esp. around midnight. 0.92" Event total. 3.30" LWE MTD. 72.21" YTD!
12/24/2018 7:00 AM 0.03 M M M M R- Late eve/early overnight.
1/1/2019 7:00 AM 0.32 M M M M Aftn R-/R tapering off to L- late day lull then late eve R-. 5.00" Dec. total inc. 1.35" R+ 12/28. 73.91" Total precip for 2018 but nearby obs of 80.04"!!!
1/3/2019 7:00 AM 0.02 M M M M Ocnl overnight R-.
1/5/2019 7:00 AM 0.14 M M M M Ocnl eve/overnight R-.
1/6/2019 7:00 AM 0.02 M M M M Mrng RW-. 0.16" Event total. 0.18" MTD.
1/8/2019 7:00 AM 0.07 M M M M Early overnight R-. 0.25" MTD.
1/9/2019 7:00 AM 0.09 M M M M Eve RW-/RW. 0.34" MTD.
1/13/2019 8:00 AM 0.48 6.0 M 6.0 M S- Ocnly S eve thru overnite into morning. Caw, Caw!
1/14/2019 7:00 AM 0.40 3.0 M 7.5 M Mrng S- then early aftn ZR-/IP- then late aftn/eve S/S- tapering off shortly after midnite. 9.0" S/IP event total w/ 0.88" LWE. 1.22" LWE MTD.
1/18/2019 7:00 AM 0.08 0.8 M 4.0 M S- Eve into early overnight. 1.30" LWE MTD. 9.8" S MTD.
1/20/2019 7:00 AM 0.52 0.0 M 0.0 M R- Ocnly R eve/overnight. 1.82" LWE MTD.
1/25/2019 7:00 AM 0.83 M M M M R-/R Overnight into early aftn w/ brief RW+ late mrng. 2.65" LWE MTD.
1/30/2019 7:00 AM 0.22 T M 0.0 M Aftn R- briefly S- late day tapering off by eve. 2.87" LWE for Jan. w/ 9.8" S/IP. 10.6" Seasonal S/IP thus far.
2/2/2019 7:00 AM 0.05 1.6 M 1.0 M S- Mrmg/aftn. 12.2" S/IP thus far this season.
2/7/2019 7:00 AM 0.02 M M M M Ocnl late aftn/eve R-.
2/11/2019 7:00 AM 0.33 0.5 M 0.0 M Eve S turning to IP then R- by midnight thru overnight into mrng. 0.5" S/IP. 12.7" S/IP thus far this season.
2/12/2019 7:00 AM 0.23 M M M M 0.18" R- Mrng/early aftn. 0.05" L- redeveloping late eve intensifying to R-/L- into mrng. 0.56" Event total thus far.
2/13/2019 7:00 AM 0.43 M M M M R-/L- Briefly R mrng into eve. 0.99" Event total. 1.06" LWE MTD.
2/18/2019 7:00 AM 0.51 M M M M R- eve/overnight ocnly R. 1.57" LWE MTD.
2/20/2019 7:30 AM 0.06 0.6 M 0.5 M S- Late night into mrng.
2/21/2019 7:00 AM 0.62 1.0 M 1.0 M Mrng S- briefly SG- then IP-/IP then ZR-/ZL- before turning to R-/L- early aftn into eve. Event total 0.68" LWE w/ 1.6" S/IP. 2.25" Monthly LWE so far w/ 3.7" S/IP. 14.3" Seasonal snowfall thus far.
2/22/2019 7:00 AM 0.02 M M M M Overnight R-. 2.27" LWE MTD.
2/24/2019 8:00 AM 0.94 M M M M 0.21" R-/L- Aftn/eve. 0.73" R-/R Overnight into mrng.
2/25/2019 7:00 AM 0.04 M M M M Early mrng R-. 0.98" Event total. 3.25" MTD.
3/1/2019 7:00 AM 0.16 0.2 M M M Initial burst of IP early overnight then IP-/R- rest of night.
3/2/2019 7:00 AM 0.55 M M M M 0.52" Late day/eve R-/R. 0.03" Ocnl R-/L- overnight. 0.71" Event total.
3/4/2019 7:00 AM 0.58 M M M M Initial burst of IP- early aftn then R-/R aftn/eve tapering off to R-/L- early overnite. 1.29" LWE MTD.
3/9/2019 7:00 AM 0.19 T M 0.0 M R-/S- Aftn/late day tapering off to R-/L- eve. Soggy flakes never stuck. 1.48" LWE MTD.
3/10/2019 7:00 AM 0.39 M M M M Late eve/overnight R-/R. 1.87" LWE MTD.
3/21/2019 7:00 AM 0.12 M M M M T R-- Late eve. 0.12" R--/R- Overnight.
3/22/2019 7:00 AM 1.43 M M M M Generally R- mrng til early overnight except for RW+ late morning and late day. 1.55" Event total. 3.42" LWE MTD.
3/23/2019 7:00 AM 0.14 0.3 M 0.0 M Late aftn TRW/SPW/SW+ dropped temp. to 33F and whitened the ground! Thunder snow! 3.56" LWE MTD. 14.8" Seasonal snowfall.
4/13/2019 8:00 AM 0.31 M M M M .03" Aftn RW-. 0.28" Overnight TRW then R- into morning.
4/14/2019 7:00 AM 0.07 M M M M Mrng R-. 0.38" Event total. Only 0.49" MTD.
4/15/2019 7:00 AM 0.36 M M M M T Late day RW-. .36" Overnight TRW+. Only 0.85" MTD.
4/20/2019 8:00 AM 0.22 M M M M Ocnl RW- briefly RW eve. 1.07" MTD.
4/27/2019 7:00 AM 0.32 M M M M Late aftn TRW+. 1.39" MTD.
4/28/2019 7:00 AM 0.05 M M M M Early overnite R-. 1.44" MTD.
5/3/2019 7:00 AM 1.07 M M M M Late aftn/eve TRW+. Most welcome rain after a relatively dry (1.44") April here!
5/5/2019 7:00 AM 0.52 M M M M Late eve/overnight R-/R/RW.
5/6/2019 7:00 AM 1.05 M M M M Ocnl R-/R Mrng til late day. 1.57" Event total. 2.64" MTD Already after just 1.50" previous 40 days!
5/11/2019 7:00 AM 0.72 M M M M 0.26" Late day RW. 0.46" Late eve TRW+. 3.36" MTD thus far.
5/12/2019 8:00 AM 0.23 M M M M RW- Beginning late aftn becoming R- overnight into morning. Event total 0.95" thus far.
5/13/2019 7:00 AM 0.85 M M M M R- Briefly RW mrng into early aftn. L- redeveloped eve then ocnl RW/R- overnight into mrng. 1.80" Event total thus far. 4.44" MTD.
5/14/2019 7:00 AM 0.24 M M M M R-/RW Mrng into early aftn. 2.04" Event total. 4.68" MTD.
5/19/2019 7:00 AM 0.68 M M M M Early overnight TRW+. 5.36" MTD. Typical warm season nocturnal warm frontal passage storm!
5/24/2019 7:00 AM 0.37 M M M M Late aftn TRW+. 5.73" MTD.
5/26/2019 7:00 AM 0.05 M M M M Early overnight TRW-. 5.78" MTD.
5/27/2019 7:00 AM 1.02 M M M M 4 Separate TRW's mid aftn til late eve. 6.80" MTD.
5/29/2019 7:00 AM 0.06 M M M M Early mrng R-. 6.86" MTD.
5/31/2019 7:00 AM 0.66 M M M M Later aftn (.47") and early eve (.19")TRW's. 7.52" May precip total.
6/3/2019 7:00 AM 0.03 M M M M Late day TRW-.
6/6/2019 7:00 AM 0.03 M M M M Early overnight RW-.
6/10/2019 7:00 AM 0.58 M M M M Mrng/early aftn R-/R tapering off to R-/L- then L- except for brief early overnight RW.
6/11/2019 7:00 AM 0.16 M M M M 0.11" Mrng RW. 0.05" Early overnight RW-. 0.74" Event total. 0.80" MTD.
6/13/2019 7:00 AM 2.20 M M M M R- Early overnite becoming R/R+ before tapering off and ending early mrng. 3.00" MTD.
6/14/2019 7:00 AM 0.03 M M M M Ocnl late day (.02") and eve (.01) RW-. 2.23" Event total. 3.03" MTD.
6/18/2019 7:00 AM 1.58 M M M M Late aftn/eve TRW+. 4.61" MTD.
6/19/2019 7:00 AM 0.92 M M M M Ocnl aftn/eve RW-/TRW- except TRW+ for a time in the eve. 5.53" MTD.
6/20/2019 7:00 AM 0.03 M M M M Late day RW-. 5.56" MTD.
6/21/2019 7:00 AM 0.33 M M M M Late day TRW-. Eve RW- briefly RW. 5.89" MTD.
6/25/2019 7:00 AM 0.09 M M M M Early overnight TRW-.
6/30/2019 7:00 AM 0.05 M M M M Ocnl late day thru early overnight RW-/TRW-. 6.03" June monthly precip.
7/3/2019 7:00 AM 0.29 M M M M Eve TRW+.
7/5/2019 7:00 AM 0.45 M M M M .05" TRW-/RW- mid aftn til early eve. 0.40" TRW+ late eve. 0.74" MTD.
7/7/2019 7:00 AM 0.41 M M M M Eve TRW+. 1.15" MTD.
7/8/2019 6:00 AM 0.20 M M M M Overnight RW.
7/9/2019 7:00 AM 2.95 M M M M Mrng TRW++! 3.15" Event total. 4.60" MTD. 17.85" Since May 1, the monsoon continues!
7/12/2019 7:00 AM 1.12 M M M M Eve TRW+ w/ frequent intense lightning! 5.42" MTD. 18.97" Since May 1! >30" YTD.
7/18/2019 7:00 AM 0.13 M M M M Late day TRW- w/ gusty winds but very little thunder/lightning. 5.55" MTD.
8/1/2019 7:00 AM 0.08 M M M M Late day TRW- briefly TRW. 5.79" July total. 5.42" Fell in first 11 days but only 0.37" last 3 weeks!
8/2/2019 8:00 AM 0.64 M M M M 0.40" Late day TRW+. 0.24" Late night TRW morphing into early morning R-.
8/3/2019 7:00 AM 0.04 M M M M Early mrng R-. 0.68" MTD.
8/6/2019 7:00 AM 0.02 M M M M Early/midaftn TRW-. 0.70" MTD.
8/8/2019 7:00 AM T M M M M Late aftn TRW-.
8/10/2019 7:00 AM 0.09 M M M M Mid aftn TRW. 0.79" MTD.
8/14/2019 7:00 AM 0.07 M M M M .01" Early aftn R-. .06" Eve TRW-. 0.86" MTD. Month long drought continues, just the opposite of last summer!
8/16/2019 7:00 AM T M M M M .T Late day TRW-. .T Eve RW-. 5 Week drought (1.23" total) continues!
8/18/2019 7:00 AM T M M M M Ocnl nonproductive aftn TRW-.
8/20/2019 7:00 AM 0.05 M M M M Yet another underperforming aftn TRW-. 0.91" MTD. Only 1.28" since July 11!
8/21/2019 7:00 AM 0.15 M M M M 0.15" Late aftn TRW. .T Early eve TRW-. 1.01" MTD.
8/22/2019 7:00 AM 0.04 M M M M Late day RW-. 1.10" MTD.
8/24/2019 7:00 AM 0.66 M M M M Aftn R-/R. Beneficial soaking rain! 1.76" MTD.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



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