Station Overview Station Location
Station Number OK-CV-6 Latitude 35.207833
Station Name Norman 7.9 ESE Longitude -97.299917
County Cleveland Elevation (ft) 1102



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 10 3.85 1.66 5 1.66 5 0.00 0 0 5 0 0.0 0 0
Nov 10 2.37 0.84 3 0.84 3 0.00 0 0 3 0 0.0 0 0
Dec 10 2.16 0.22 3 0.22 3 0.00 0 0 3 0 0.0 0 0
Jan 11 1.53 0.61 3 0.61 3 0.00 0 0 2 1 0.5 1 0
Feb 11 1.98 2.49 8 2.49 8 0.00 0 0 8 0 10.5 5 2
March 11 3.24 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 11 3.31 2.66 3 2.66 3 0.00 0 0 3 0 0.0 0 0
May 11 4.92 4.26 4 4.26 4 0.00 0 0 4 0 0.0 0 0
June 11 4.75 1.40 4 1.40 4 0.00 0 0 4 0 0.0 0 0
July 11 2.85 0.92 3 0.92 3 0.00 0 0 3 0 0.0 0 0
Aug 11 3.12 2.72 5 2.72 5 0.00 0 0 4 1 0.0 0 0
Sept 11 4.01 1.65 5 1.65 5 0.00 0 0 5 0 0.0 0 0
Water Year Totals: 38.09" 19.43" 46 days 19.43" 46 0.00" 0 days 0 44 days 2 days 11.0" 6 days 2 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
10/1/2010
10/2/2010
10/3/2010
10/4/2010
10/5/2010
10/6/2010
10/7/2010
10/8/2010
10/9/2010
10/10/2010
10/11/2010
10/12/2010 0.28
10/13/2010
10/14/2010
10/15/2010
10/16/2010
10/17/2010
10/18/2010
10/19/2010
10/20/2010
10/21/2010 0.01
10/22/2010 0.48
10/23/2010 0.51
10/24/2010 0.38
10/25/2010
10/26/2010
10/27/2010
10/28/2010
10/29/2010
10/30/2010
10/31/2010
11/1/2010
11/2/2010
11/3/2010
11/4/2010
11/5/2010
11/6/2010
11/7/2010
11/8/2010
11/9/2010
11/10/2010
11/11/2010
11/12/2010
11/13/2010 0.51
11/14/2010
11/15/2010
11/16/2010 0.20
11/17/2010
11/18/2010
11/19/2010
11/20/2010
11/21/2010
11/22/2010
11/23/2010
11/24/2010
11/25/2010 0.13
11/26/2010
11/27/2010
11/28/2010
11/29/2010
11/30/2010
12/1/2010
12/2/2010
12/3/2010
12/4/2010
12/5/2010
12/6/2010
12/7/2010
12/8/2010 0.07
12/9/2010
12/10/2010
12/11/2010
12/12/2010
12/13/2010
12/14/2010
12/15/2010
12/16/2010
12/17/2010 0.02
12/18/2010
12/19/2010
12/20/2010
12/21/2010
12/22/2010
12/23/2010
12/24/2010
12/25/2010
12/26/2010
12/27/2010
12/28/2010
12/29/2010
12/30/2010
12/31/2010 0.13
Day of YearDaily PrcpMultiday Prcp
1/1/2011
1/2/2011
1/3/2011
1/4/2011
1/5/2011
1/6/2011
1/7/2011
1/8/2011
1/9/2011
1/10/2011 T
1/11/2011
1/12/2011
1/13/2011
1/14/2011
1/15/2011
1/16/2011
1/17/2011
1/18/2011
1/19/2011
1/20/2011 0.08
1/21/2011 0.53
1/22/2011
1/23/2011
1/24/2011
1/25/2011
1/26/2011
1/27/2011
1/28/2011
1/29/2011
1/30/2011
1/31/2011
2/1/2011 1.11
2/2/2011 0.07
2/3/2011
2/4/2011
2/5/2011 0.13
2/6/2011
2/7/2011 0.18
2/8/2011
2/9/2011 0.37
2/10/2011 0.05
2/11/2011
2/12/2011
2/13/2011
2/14/2011
2/15/2011
2/16/2011
2/17/2011
2/18/2011
2/19/2011
2/20/2011 0.01
2/21/2011
2/22/2011
2/23/2011
2/24/2011
2/25/2011 0.57
2/26/2011
2/27/2011
2/28/2011
3/1/2011
3/2/2011
3/3/2011
3/4/2011
3/5/2011
3/6/2011
3/7/2011
3/8/2011
3/9/2011
3/10/2011
3/11/2011
3/12/2011
3/13/2011
3/14/2011
3/15/2011
3/16/2011
3/17/2011
3/18/2011
3/19/2011
3/20/2011
3/21/2011
3/22/2011
3/23/2011
3/24/2011
3/25/2011
3/26/2011
3/27/2011
3/28/2011
3/29/2011
3/30/2011
3/31/2011
Day of YearDaily PrcpMultiday Prcp
4/1/2011
4/2/2011
4/3/2011
4/4/2011
4/5/2011
4/6/2011
4/7/2011
4/8/2011
4/9/2011
4/10/2011
4/11/2011
4/12/2011
4/13/2011
4/14/2011
4/15/2011
4/16/2011
4/17/2011
4/18/2011
4/19/2011
4/20/2011
4/21/2011
4/22/2011
4/23/2011 0.05
4/24/2011 0.20
4/25/2011 2.41
4/26/2011
4/27/2011
4/28/2011
4/29/2011
4/30/2011
5/1/2011 0.28
5/2/2011 0.28
5/3/2011
5/4/2011
5/5/2011
5/6/2011
5/7/2011
5/8/2011
5/9/2011
5/10/2011
5/11/2011
5/12/2011
5/13/2011
5/14/2011
5/15/2011
5/16/2011
5/17/2011
5/18/2011
5/19/2011
5/20/2011 2.85
5/21/2011 0.85
5/22/2011
5/23/2011
5/24/2011
5/25/2011
5/26/2011
5/27/2011
5/28/2011
5/29/2011
5/30/2011
5/31/2011
6/1/2011
6/2/2011
6/3/2011
6/4/2011
6/5/2011
6/6/2011
6/7/2011
6/8/2011
6/9/2011
6/10/2011
6/11/2011 0.11
6/12/2011
6/13/2011
6/14/2011
6/15/2011 1.22
6/16/2011
6/17/2011
6/18/2011
6/19/2011
6/20/2011
6/21/2011
6/22/2011
6/23/2011
6/24/2011
6/25/2011
6/26/2011
6/27/2011
6/28/2011 0.03
6/29/2011 0.04
6/30/2011
Day of YearDaily PrcpMultiday Prcp
7/1/2011
7/2/2011
7/3/2011
7/4/2011 0.19
7/5/2011
7/6/2011
7/7/2011
7/8/2011
7/9/2011
7/10/2011
7/11/2011
7/12/2011
7/13/2011 0.48
7/14/2011
7/15/2011
7/16/2011
7/17/2011
7/18/2011
7/19/2011
7/20/2011
7/21/2011
7/22/2011
7/23/2011
7/24/2011
7/25/2011 0.25
7/26/2011
7/27/2011
7/28/2011
7/29/2011
7/30/2011
7/31/2011
8/1/2011
8/2/2011
8/3/2011
8/4/2011
8/5/2011
8/6/2011
8/7/2011
8/8/2011 T
8/9/2011 0.05
8/10/2011 0.43
8/11/2011
8/12/2011 1.00
8/13/2011 1.24
8/14/2011
8/15/2011
8/16/2011
8/17/2011
8/18/2011
8/19/2011
8/20/2011
8/21/2011
8/22/2011
8/23/2011
8/24/2011
8/25/2011
8/26/2011
8/27/2011
8/28/2011
8/29/2011
8/30/2011
8/31/2011
9/1/2011
9/2/2011
9/3/2011
9/4/2011
9/5/2011
9/6/2011
9/7/2011
9/8/2011 0.02
9/9/2011
9/10/2011
9/11/2011
9/12/2011
9/13/2011
9/14/2011
9/15/2011
9/16/2011 0.05
9/17/2011 0.73
9/18/2011 0.34
9/19/2011
9/20/2011
9/21/2011
9/22/2011 0.51
9/23/2011
9/24/2011
9/25/2011
9/26/2011
9/27/2011
9/28/2011
9/29/2011
9/30/2011



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/12/2010 8:00 AM 0.28 M M M M Moderate rain and thunder.
10/21/2010 8:00 AM 0.01 M M M M Elevated showers and some thunder in the morning
10/22/2010 8:00 AM 0.48 M M M M We had moderate rain with a few nearby lightning strikes.
10/23/2010 8:00 AM 0.51 M M M M A squall line came through just before lunch. We may have had winds up to 30 mph.
10/24/2010 8:00 AM 0.38 M M M M An MCS passes eastward to our south. While it passed by we got moderate anvil rain, strong doug winds gusting around 30mph and occasional lightning. We were nude anvil right up till sunset.
11/13/2010 8:00 AM 0.51 M M M M Strong cold front passed through around 11:45 am followed by heavy rain showers and some thunder.
11/16/2010 8:00 AM 0.20 M M M M An upper low passed to our south giving us a cold rain.
11/25/2010 8:00 AM 0.13 M M M M A retreating dryline came back just in time to allow storms to form this far west just before the arctic front hit. We missed the axis of the heaviest rain a few miles to our north.
12/8/2010 8:00 AM 0.07 T M M M Rain started around 7:30 pm and quickly turned to wet snow with big flakes around 8:00 pm. The big flakes lasted 20 minutes before turning back to drizzle and then ending.
12/17/2010 8:00 AM 0.02 M M M M
12/31/2010 8:00 AM 0.13 M M M M Brief heavy rain with thunder is all we get out of this big storm around 2am.
1/10/2011 8:00 AM T M M M M Flurries fell for one hour while we went through the extreme northern fringe of a wet winter storm system in TX. Then freezing drizzle fell overnight.
1/20/2011 8:00 AM 0.08 0.5 M M M An arctic front passed overnight followed by some freezing drizzle and then light snow. The glaze was too thin to measure.
1/21/2011 8:00 AM 0.53 M M M M
2/1/2011 8:00 AM 1.11 4.0 M 5.0 M We had 7/8" of sleet then 4" of snow. Most of the snow fell in high winds and so our cover was packed. Thunder and lightning accompanied the sleet around 9:30-11pm.
2/2/2011 8:00 AM 0.07 1.7 M M M Almost blizzard conditions continued on and off till about 11 am.
2/5/2011 8:00 AM 0.13 2.0 M M M Light snow fell from 10 am - 7 pm. The sun was dimly visible in the late afternoon but heavier wraparound snow came in at dusk.
2/7/2011 8:00 AM 0.18 M M M M Light rain fell from a passing upper wave and a cold front.
2/9/2011 8:00 AM 0.37 2.3 M 2.3 0.31 This storm failed to meet even the minimum of our expectations.
2/10/2011 8:00 AM 0.05 0.5 0.05 M M .5" of low density fluff fell around lunch. Temp at ob time was -11.5F, the coldest I've seen here.
2/20/2011 8:00 AM 0.01 M M M M Morning drizzle fell out of surging gulf moisture.
2/25/2011 8:00 AM 0.57 M M M M Thunderstorms passed overhead from the SW in the morning.
4/23/2011 8:00 AM 0.05 M M M M I hasn't rained in so long, I forgot my password. Nevertheless, a supercell formed overhead and gave us .02" of rain and .3" dia hail. Points east got it worse with Tecumseh getting baseballs. The next storm south produced tornadoes and flash flooding. Light rain fell just before ob time with a cool front.
4/24/2011 9:00 AM 0.20 M M M M Thunderstorms passed around the area last night but we got mostly missed by the big complexes to the north and south.
4/25/2011 8:00 AM 2.41 M M M M Numerous elevated thunderstorms passed overhead starting 10am and continued till 7 pm. Around 11 am and approximately an hour later we had hail. Detailed obs will be entered soon. Overall a decent rain event to help with the drought but there was no runoff
5/1/2011 8:00 AM 0.28 M M M M
5/2/2011 8:00 AM 0.28 M M M M
5/20/2011 7:30 AM 2.85 M M M M A line of storms died on top of us around 11pm - 12 am. Then a second line of storms came through 5:45 am through ob time.
5/21/2011 8:00 AM 0.85 M M M M thunderstorms
6/11/2011 8:00 AM 0.11 M M M M Mostly missed both days. Most storms formed to the north.
6/15/2011 8:00 AM 1.22 M M M M 7-8 pm severe thunderstorm with half dollar sized hail and 50 mph winds. In town got over 80 mph winds with lots of damage.
6/28/2011 8:00 AM 0.03 M M M M Morning thunderstorms formed almost directly overhead and moved east. Other storms to our west moved to our north. Another thunderstorm to our south kept its distance from us. So we got some close lightning strikes but not much water.
6/29/2011 8:00 AM 0.04 M M M M Some more rain fell yesterday morning with remaining thunderstorms. Then we had a decaying MCS this morning. Any rain that fell before ob time evaporated off the ground within an hour when a heatburst raised our temp to 97 F by 8:30 am.
7/4/2011 8:00 AM 0.19 M M M M Some thunderstorms formed around 1150 when two boundaries merged overhead from the west and north. We had some gusts to ~30mph and occasional lightning.
7/13/2011 8:00 AM 0.48 M M M M Several thunderstorms passed by in the afternoon culminating in a gusty storm 7:15 to 8pm. All of it was courtesy of a tropical upper low.
7/25/2011 8:00 AM 0.25 M M M M Thunderstorms developed at night with a couple colliding outflow boundaries. At first we had quite a bit of rain without lightning and then only a few lightning strikes after the rain stopped. Winds were strong but not enough to break branches.
8/8/2011 8:00 AM T M M M M Light rain drops fell Sunday morning from elevated thunderstorms that missed us just to the north. Rain persisted most of the day to our north and held our temps down to only 96 deg F.
8/9/2011 8:00 AM 0.05 M M M M Thunderstorms developed northwest of us and moved southeast over east Norman by 9 pm. There was frequent lightning and some moderate rain but the core of the storm passed to our east. We lost power from a lucky strike on our main transformer station to our east.
8/10/2011 8:00 AM 0.43 M M M M Wow, an actual mesoscale convective complex of storms last night around 1:30 am! Then we got a tail end line of storms behind the first complex at 4 am. Our rain moistened the top 4.5" of sandy soil. Below that it's dessicated.
8/12/2011 8:00 AM 1.00 M M M M We had another MCS come in at 0900 CDT! That's two in one week where we had none I could remember all spring. We also had another undular bore type gust front.
8/13/2011 8:00 AM 1.24 M M M M A squall line appeared to weaken as it approached from the north but a segment from the west clipped us enough to give us some good rain. We also had occasional lightning.
9/8/2011 8:00 AM 0.02 M M M M Wow, I almost forgot what rain looked like. We had a patch of midlevel moisture come overhead and some rain managed to make ground contact without evaporating first.
9/16/2011 8:00 AM 0.05 M M M M
9/17/2011 8:00 AM 0.73 M M M M Moderate rain fell with no lightning.
9/18/2011 8:00 AM 0.34 M M M M Thunderstorms passed overhead during the night. One developed overhead at 8:30 with close lightning. More storms passed through between 1am and 2 am.
9/22/2011 9:00 AM 0.51 M M M M Thunderstorms began around 3 am but most of them missed us to the north. More general rain came later with some occasional lightning up until observation time.



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
4/22/2011 5:46 PM 3/8" 1/4" Pea Size Rice Hard|Clear Ice|White Ice 2 1min Continuous False After rain Same time as smaller hail vertical 1
6/15/2011 7:49 PM The largest hail came near the end with the microburst of ~50 mph winds. 1 1/2" Ping Pong Ball Size 5/8" 1/4" Pea Size Hard 10 2min shredded leaves Intermittent False After rain After smaller hail 30-40 .5