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MORA Debris Flow Hazard - View Day

Daily Debris Flow Hazard (DFH) for Sunday, January 5, 2020

[ Saturday, January 4, 2020 | Index | Today | Monday, January 6, 2020 ]

DAY 97 OF WATER YEAR 2020, FORECAST LAST UPDATED 01/06/2020 04:00:11 AM
According to the database, there were no geologic events (floods, debris flows, outburst floods, etc) on this day.

THIS DAY'S DEBRIS FLOW HAZARD CLASS:
L
LOW

MODEL USED FOR HAZARD CLASS DETERMINATION:

WET

MODEL VARIABLES AND OUTPUT:
Temperature at Paradise MAXIMUM TEMPERATURE (Tmax): 25.13°F
MINIMUM TEMPERATURE (Tmin): 20.57°F
AVERAGE TEMPERATURE (Tavg): 22.85°F

MAXIMUM TEMPERATURE PERCENTILE (Tmax percentile): 0.204
Maximum Percentile on this day is based on 87 years of historic (1917-2017) records:

DEBRIS FLOW HAZARD MODEL:


Click to zoom in
Degree Days above 32°F
(DD32)
TODAY'S DD32: -7
18-DAY CUMULATIVE DD32: 610

DD32 is calculated as: DD32 = TMAX - 32
18-day Cumulative DD32 is the sum of DD32 for the last 18 days.
Precipitation at Paradise DAY 1: 1.01 in
DAY 1-3 (P3): 2.80 in
DAY 4-15 (P15): 8.22 in
18-DAY TOTAL (P18): 11.02 in

PRECIP THRESHOLD A (PA) EXCEEDED: True
P3 > (-0.67 * P15 + 2.5)

PRECIP THRESHOLD B (PB) EXCEEDED: True
P3 > (-0.67 * P15 + 4.5)
Snow at Paradise DEPTH: 70 in
SWE DAY: 5
CALCULATED SNOW DENSITY: 318.39 kg/m3
CALCULATED SWE: 22.21 in

SWE Day, Calculated Snow Density, and Calculated SWE based on work by Sturm and others (2010)
If Tavg > 32°F, snow melt is factored in at: M (in) = a(Tavg - T32), where a is between 0.0766 - 0.1312 in * °F-1 * day-1 (Currently 0.1039) and T32 = 32°F. This method is from Westerstrom (1982) in Kustas and others (1994) and converted to US customary units.
Seasonal Variables DAYS SINCE JULY 11: -188

July 11 is the average snow melt-out day (where snow depth goes down to 0 in) at Paradise
Calculated Variables D0: 1
D1: 1
D2: 5
D3: 5
D4: 1
D5: 2
HSdry: 17.5

These are primarly for the Dry-weather debris flow hazard model, but calculated every day.
HSdry = (([D0 + D1 + D2] * D3) * D4) / D5
See model (right) to figure out how D0 - D5 are calculated.
Notes

UPDATE HISTORY AND MODEL OUTPUT NOTES:
You can also use this to see how the forecast changes over time. Note that "FORECAST" is the forecasted model whereas "OBSERVED" is the actual observed values for that day.
Show/Hide: Observation | Forecast | Notes | Status

D TYPE WY DOFWY DS0SP T_MAX T_MIN T_AVG SP P1 P3 P15 P18 PA PB DD32 DD32_18 SWE_DAY SNOW_P SWE T_MAX_PERC T_MAX_PERC_YRS D0 D1 D2 D3 D4 D5 HS_DRY FCST_TYPE HAZ_CLASS
2020-01-06 04:00:11OBSERVATION202097-18825.1299420.5722.8499769.7619995833331.012.88.2211.02TT-6.87006610.129945318.38828298128 22.2114032646780.2037354026063187 11551217.5WETL
2020-01-06 00:00:13FORECAST202098-18828.128.128.167.2341064123110.05711.84718.2210.0671TT-3.9613.15316.5878064412121.2854982671090.309933977130878721551220WETL
2020-01-05 12:00:11FORECAST202097-18831.4126.7429.07566.9376310684530.7642.5548.2210.774TT-0.59616.415316.3758852494121.177452285780.449965080152368721551220WETL
2020-01-05 08:00:11FORECAST202097-18831.8822.6927.28567.3794414853590.93212.72218.2210.9421TT-0.12616.885316.6916339776421.3385054204990.470834741027678721551220WETL
2020-01-05 04:00:12FORECAST202097-18831.5423.0827.3168.1645922159011.23083.02088.2211.2408TT-0.46616.545317.2518841664821.6253453139350.455726196889128721551220WETL
2020-01-05 00:00:12FORECAST202097-18829.2425.927.5761.2683090635831.3111.9518.2210.171TT-2.76611.245312.292586719919.1336387214210.356248749874378721551220WETL
2020-01-04 20:00:10FORECAST202097-18827.6724.7926.2359.3689297113251.23662.27668.2210.4966TT-4.33609.675310.9113664711118.4584750624750.293171248352248721551220WETL
2020-01-04 16:00:10FORECAST202097-18830.8223.9527.38559.1095716367041.19492.23498.2210.4549TT-1.18612.825310.7222448228118.3666587894710.423968387688638721551220WETL
2020-01-04 12:00:11FORECAST202097-18830.6523.8627.25560.5965832278341.24172.28178.2210.5017TT-1.35612.655311.8048720817618.8943098819470.416533699819778721551220WETL
2020-01-04 08:00:11FORECAST202097-18830.824.3227.5659.5164429162520.91492.03498.2210.2549TT-1.2612.85311.0188762460818.5107371939770.423092258883598721551220WETL
2020-01-04 04:00:11FORECAST202097-18830.8123.927.35560.3629443950450.89592.31598.2210.5359TT-1.19615.815311.6350406474818.8112086301520.423530276034418721551220WETL
2020-01-04 00:00:13FORECAST202097-18831.1424.1827.6662.0444831897660.97382.18388.2210.4038TT-0.86615.145312.8551019977219.410933116730.438034684484438721551220WETL
2020-01-03 20:00:11FORECAST202097-18831.0125.2928.1562.3197518067170.80962.52968.2210.7496TT-0.99625.015313.0543306847119.5094681902890.432309760764558721551220WETL
2020-01-03 16:00:11FORECAST202097-18827.7324.0925.9163.1194170848870.93882.66888.2210.8888TT-4.27621.735313.6323077331519.7962884431040.295484879729058721551220WETL
2020-01-03 12:00:11FORECAST202097-18830.8824.7327.80562.8287892624470.99112.62118.2210.8411TT-1.12624.885313.422385365919.6919490002870.426599012605538721551220WETL
2020-01-03 08:00:11FORECAST202097-18831.1724.5227.84563.9622554657521.2772.8878.2211.107TT-0.83624.175314.2402197616220.0995132140070.439357709593038721551220WETL
2020-01-03 04:00:12FORECAST202097-18831.1622.526.8364.5787618927441.32613.06618.2211.2861TT-0.84618.165314.6840624755220.3219071420480.438916625208748721551220WETL
2020-01-03 00:00:14FORECAST202097-18829.8122.9526.3862.4792897178411.08363.08367.7610.8436TT-2.19623.815313.1697342558719.5666225574320.380282651122818721551220WETL
2020-01-02 20:00:11FORECAST202097-18829.6123.4626.53562.1412905152811.07243.23248.4411.6724TT-2.39622.615312.9251832441419.4455747215220.37179147542638721551220WETL
2020-01-02 16:00:11FORECAST202097-18830.7722.4226.59562.4854597691211.19033.46038.4411.9003TT-1.23625.775313.1741964937619.5688336557380.421778779723988721551220WETL
2020-01-02 12:00:11FORECAST202097-18831.1422.4926.81564.7019936367441.22313.58318.4412.0231TT-0.86624.145314.7726976355520.3664210794360.438034684484438721551220WETL
2020-01-02 08:00:11FORECAST202097-18830.4823.6927.08566.2145979764311.38823.74828.6412.3882TT-1.52623.485315.8583900258620.9144363130450.409128746963798721551220WETL
2020-01-02 04:00:13FORECAST202097-18827.6823.9425.8166.0336282716111.27023.52028.6812.2002TT-4.32620.685315.7287161182520.8487126748260.293556270364618721551220WETL
2020-01-02 00:00:14FORECAST202097-18827.6823.9325.80561.4352001250361.25923.27928.1111.3892TT-4.32616.685312.4136309864319.1931939414410.293556270364618721551220WETL
2020-01-01 20:00:13FORECAST202097-18828.4523.0325.7457.1934244485840.83062.66068.3511.0106TT-3.55620.455309.3211398758717.691135243840.32387795756478721551220WETL
2020-01-01 16:00:12FORECAST202097-18831.1224.5427.8359.597585155241.23563.15568.3511.5056TT-0.88622.125311.077996722318.5394973995790.437153051408478721551220WETL
2020-01-01 12:00:11FORECAST202097-18831.1424.5527.84561.3946130621361.23563.33568.2311.5656TT-0.86625.145312.3841983541719.178706984680.438034684484438721551220WETL
2020-01-01 08:00:11FORECAST202097-18830.822.9826.8964.0213147459571.13643.49648.7412.2364TT-1.2622.85314.2827685359620.1207960436720.423092258883598721551220WETL
2020-01-01 04:00:13FORECAST202097-18828.2421.4524.84564.8711771263031.08893.49899.1812.6789TT-3.76622.245314.8943386786220.4275664204910.315480313073298721551220WETL
2020-01-01 00:00:13FORECAST202097-18828.2621.4524.85562.5772678607761.08893.30898.9212.2289TT-3.74283.265313.2405846898219.6017399730010.316276087693958721251212.5WETL
2019-12-31 20:00:12FORECAST202097-18825.6821.9923.83567.7292905582671.72443.854411.2915.1444TT-6.32272.685316.9414094187121.4662168084660.221600779916738711251210WETL
2019-12-31 16:00:11FORECAST202097-18828.0922.6225.35564.6089946392321.20913.379111.1714.5491TT-3.91270.095314.7058101254320.3328259993290.309539439227228721251212.5WETL
2019-12-31 12:00:11FORECAST202097-18828.122.6325.36553.4535250295941.20913.449111.1314.5791TT-3.9269.15306.5667682107216.3870744177930.309933977130878721251212.5WETL
2019-12-31 08:00:10FORECAST202097-18832.0625.2528.65552.7235331859391.15893.778911.9515.7289TT0.060000000000002271.065306.0260830592216.1347763459360.47885181028978721251212.5WETL
2019-12-31 04:00:12FORECAST202097-18828.323.9926.14554.4368404832242.14274.642711.8316.4727TT-3.7277.35307.2935003533116.7280872602640.317870187151378721251212.5WETL
2019-12-31 00:00:16FORECAST202097-18827.7124.0125.8653.9550096503371.78923.629211.3514.9792TT-4.299.715306.9376237716116.5608224526490.29471273748428721151210WETL
2019-12-30 20:00:11FORECAST202097-18827.9322.3625.14551.6653795312331.09962.989611.7814.7696TT-4.0714.935305.2405553687815.7703691414530.303256892066738721151210WETL
2019-12-30 16:00:11FORECAST202097-18828.620.224.450.7241135316411.10142.591411.5714.1614TT-3.417.65304.5400235040915.447522727150.329931930058088721151210WETL
2019-12-30 12:00:11FORECAST202097-18828.6220.224.4150.7455101957531.10142.591411.3913.9814TT-3.3817.625304.5559664600515.4548479011760.330742544614588721151210WETL
2019-12-29 20:02:14FORECAST202097-18829.6221.3625.4953.4075067099250.72015.000112.5217.5201TT-2.387.625306.5327132893716.3711479418140.372214595715088721151210WETL
2019-12-29 04:02:15FORECAST202097-18825.2820.9523.11551.5653705343510.10593.475914.2717.7459TT-6.7214.285305.1662037388615.7360083703560.20852219346969871115127.5WETL
2019-12-29 04:00:12FORECAST202097-18825.0420.9522.99554.0162717537490.0674.25714.1718.427TT-6.966.045306.9828956658716.582071516040.2008979934811871115127.5WETL
2019-12-29 00:02:15FORECAST202097-18820.9520.9520.9556.4971241863120.01244.202414.1518.3524TT-11.05-1.055308.8103069373617.4468942610530.097417000666531871115127.5WETL