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MORA Debris Flow Hazard - View Day

Daily Debris Flow Hazard (DFH) for Thursday, February 23, 2023

[ Wednesday, February 22, 2023 | Index | Today | Friday, February 24, 2023 ]

DAY 146 OF WATER YEAR 2023, FORECAST LAST UPDATED 02/24/2023 07:00:14 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): 8.82°F
MINIMUM TEMPERATURE (Tmin): 0.22°F
AVERAGE TEMPERATURE (Tavg): 4.52°F

MAXIMUM TEMPERATURE PERCENTILE (Tmax percentile): 0.003
Maximum Percentile on this day is based on 16 years of historic (1917-2017) records:

DEBRIS FLOW HAZARD MODEL:


Click to zoom in
Degree Days above 32°F
(DD32)
TODAY'S DD32: -23
18-DAY CUMULATIVE DD32: -54

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: 0.03 in
DAY 1-3 (P3): 0.91 in
DAY 4-15 (P15): 6.04 in
18-DAY TOTAL (P18): 6.95 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: 138 in
SWE DAY: 54
CALCULATED SNOW DENSITY: 402.77 kg/m3
CALCULATED SWE: 55.56 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: -138

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: 1
D3: 3
D4: 1
D5: 2
HSdry: 4.5

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
2023-02-24 07:00:14OBSERVATION2023146-1388.819960.217944.51895137.940997083330.0300000000000860.910000000000096.046.9500000000001TT-23.18004-54.1800454402.7693060551 55.5583996718030.002815090785337116 1113124.5WETL
2023-02-24 03:00:23OBSERVATION2023146-1388.819960.217944.51895137.940997083330.0300000000000860.910000000000096.046.9500000000001TT-23.18004-54.1800454402.7693060551 55.5583996718030.002815090785337116 1113124.5WETL
2023-02-23 11:00:01FORECAST2023146-13811.4440.3385.89113900.886.046.92TT-20.556-51.55654403.2934764586256.0577932277480.0066546385398019161113124.5WETL
2023-02-23 07:00:18FORECAST2023146-13811.4440.3385.891139.4665845833300.886.046.92TT-20.556-51.55654403.5239728735356.2781102941690.0066546385398019161113124.5WETL
2023-02-23 03:00:20FORECAST2023146-13811.4440.3385.891139.4665845833300.886.046.92TT-20.556-51.55654403.5239728735356.2781102941690.0066546385398019161113124.5WETL
2023-02-22 23:00:04FORECAST2023146-13811.2821.0226.15213700.756.046.79TT-20.718-51.71854402.3023600146955.1154233220130.0063248051247625161113124.5WETL
2023-02-22 19:00:04FORECAST2023146-13810.148-0.3464.90113700.756.046.79TT-21.852-52.85254402.3023600146955.1154233220130.0043940253053287161113124.5WETL
2023-02-22 15:00:01FORECAST2023146-1389.968-0.7064.63113700.756.046.79TT-22.032-53.03254402.3023600146955.1154233220130.0041415886842123161113124.5WETL
2023-02-22 11:00:05FORECAST2023146-1389.32-0.5624.37913700.756.046.79TT-22.68-53.6854402.3023600146955.1154233220130.0033367988070492161113124.5WETL
2023-02-22 07:00:19FORECAST2023146-1389.428-0.7424.343136.5089133333300.756.046.79TT-22.572-54.57254402.0582270872154.8845316764020.0034603053861925161113124.5WETL
2023-02-22 03:00:12FORECAST2023146-1389.428-0.7424.343136.5089133333300.756.046.79TT-22.572-54.57254402.0582270872154.8845316764020.0034603053861925161113124.5WETL
2023-02-21 23:00:06FORECAST2023146-1389.428-0.7424.34313000.936.046.97TT-22.572-56.57254398.7935329392251.8431592820990.0034603053861925161113124.5WETL
2023-02-21 19:00:07FORECAST2023146-1389.428-0.7424.34313000.936.046.97TT-22.572-56.57254398.7935329392251.8431592820990.0034603053861925161113124.5WETL
2023-02-21 15:00:05FORECAST2023146-13810.5081.1125.8113000.936.046.97TT-21.492-53.49254398.7935329392251.8431592820990.0049405022464543161113124.5WETL
2023-02-21 11:00:07FORECAST2023146-13810.6161.7966.206134.4265794470300.936.046.97TT-21.384-51.38454401.0196507080153.907699935720.005115855011442161113124.5WETL
2023-02-21 07:00:20FORECAST2023146-13810.7241.9766.35135.1033957939801.096.047.13TT-21.276-52.27654401.3578196198954.2248043591140.0052967256690237161114126WETL
2023-02-21 03:00:19FORECAST2023146-13810.7241.9766.35135.1033957939801.096.047.13TT-21.276-52.27654401.3578196198954.2248043591140.0052967256690237161114126WETL
2023-02-20 23:00:02FORECAST2023146-13810.7241.9766.35136.494650002101.096.677.76TT-21.276-53.27654402.0511318342654.8778285226670.0052967256690237161114126WETL
2023-02-20 19:00:07FORECAST2023146-13810.7241.9766.35136.494650002101.096.677.76TT-21.276-53.27654402.0511318342654.8778285226670.0052967256690237161114126WETL
2023-02-20 15:00:07FORECAST2023146-13810.3461.6525.999136.0889606759501.016.677.68TT-21.654-54.65454401.8492151793254.68724204220.0046875063830391161114126WETL
2023-02-20 11:00:09FORECAST2023146-13811.5882.396.989141.639668823701.076.677.74TT-20.412-51.41254404.5939018712957.3065462691390.0069604872911794161114126WETL
2023-02-20 07:00:21FORECAST2023146-13811.9122.5167.214142.1735143741701.076.827.89TT-20.088-50.08854404.8558410655457.5597777391970.0076943782061811161114126WETL
2023-02-20 03:00:22FORECAST2023146-13812.5062.6247.565142.2443272372401.146.747.88TT-19.494-48.49454404.8905597674857.5933852788330.009218019694774161114126WETL
2023-02-19 23:00:02FORECAST2023146-13812.5062.6247.565140.8803692335901.146.777.91TT-19.494-51.49454404.220727939156.9467654039310.009218019694774161114126WETL
2023-02-19 19:00:03FORECAST2023146-13812.5062.7327.619140.9791394893901.126.837.95TT-19.494-51.49454404.2693114127856.9935396449410.009218019694774161114126WETL
2023-02-19 15:00:06FORECAST2023146-13812.5783.0927.835140.0187280796601.046.697.73TT-19.422-51.42254403.7963833949856.5390560061330.0094195470622067161114126WETL
2023-02-19 11:00:08FORECAST2023146-13814.6662.488.573141.4070331532101.046.697.73TT-17.334-50.33454404.4796445874957.1962665119830.01719154243857161114126WETL
2023-02-19 07:00:16FORECAST2023146-13812.4342.1747.304141.2467974079801.056.777.82TT-19.566-49.56654404.4009067142957.1203329422750.0090202724744883161114126WETL
2023-02-19 03:00:15FORECAST2023146-13814.2883.8669.077141.0305485433401.016.847.85TT-17.712-47.71254404.2945938631757.0178883456310.015473862710919161114126WETL
2023-02-18 23:00:03FORECAST2023146-13812.743.5968.168141.3353754562601.216.587.79TT-19.26-53.2654404.4444368381757.1623063317180.0098871103114907161114126WETL
2023-02-18 19:00:09FORECAST2023146-13812.6682.0487.358141.9285162141701.246.687.92TT-19.332-54.33254404.7356732015757.4435335564420.0096768617265184161114126WETL
2023-02-18 15:00:09FORECAST2023146-13811.6062.5887.097141.5133071433301.126.757.87TT-20.394-57.39454404.5318486457657.2466397466680.006999577444943161114126WETL
2023-02-18 11:00:11FORECAST2023146-13812.6682.9127.79143.6910688410801.336.838.16TT-19.332-53.33254405.5985145609858.2808840776210.0096768617265184161114126WETL
2023-02-18 07:00:16FORECAST2023146-13810.148-0.1485144.5973672701901.256.878.12TT-21.852-57.85254406.04068306758.7124137760780.0043940253053287161114126WETL
2023-02-18 03:00:18FORECAST2023146-13810.148-0.1485144.5973672701901.256.878.12TT-21.852-57.85254406.04068306758.7124137760780.0043940253053287161114126WETL
2023-02-17 23:00:06FORECAST2023146-13810.148-0.1485145.5147622401401.256.727.97TT-21.852-61.85254406.4872299585259.1498926210670.0043940253053287161114126WETL
2023-02-17 19:00:10FORECAST2023146-1389.6440.0500000000000014.847144.8867826029801.286.557.83TT-22.356-61.35654406.1816698911558.8503553028340.003719712044573161114126WETL
2023-02-17 15:00:05FORECAST2023146-1388.60.2124.406143.5772940779801.336.327.65TT-23.4-61.454405.5429337281658.2267570571360.0026098682134078161114126WETL
2023-02-17 11:00:03FORECAST2023146-1388.114-1.483.317142.8040017079101.16.137.23TT-23.886-62.88654405.1647418753357.8591464907480.002203589903429161114126WETL
2023-02-17 07:00:16FORECAST2023146-13816.2688.83412.551155.754032447120.035433092.985433095.168.14543309TT-15.732-52.73254411.4012662349264.077406169940.026384025022985161115127.5WETL
2023-02-17 03:00:13FORECAST2023146-1387.556-2.0562.75144.2157719337400.978.149.11TT-24.444-67.44454405.8546328604658.5306391708560.0018084508796831161113124.5WETL
2023-02-16 23:00:04FORECAST2023146-1387.556-2.0562.75149.1837386049300.977.948.91TT-24.444-69.44454408.2627577394960.9061645327370.0018084508796831161113124.5WETL
2023-02-16 19:00:05FORECAST2023146-1387.538-2.0742.732149.4287160272400.977.978.94TT-24.462-69.46254408.3807214153361.0238068513720.001796852401492161113124.5WETL
2023-02-16 15:00:06FORECAST2023146-1387.142-2.22.471150.2865034412500.968.199.15TT-24.858-68.85854408.7931927298161.436099565950.0015582230227661161113124.5WETL
2023-02-16 11:00:03FORECAST2023146-1386.584-3.2981.643151.4169937926901.517.759.26TT-25.416-71.41654409.335423753261.9803393175680.0012708860613692161115127.5WETL
2023-02-16 07:00:15FORECAST2023146-1386.422-3.371.526151.0445612509801.517.769.27TT-25.578-70.57854409.1569612912761.8009337010240.0011970606929023161115127.5WETL
2023-02-16 03:00:12FORECAST2023146-1388.492-2.2543.119151.9795282560101.567.99.46TT-23.508-68.50854409.6046595049862.2515229230320.0025141402201285161115127.5WETL
2023-02-15 23:00:03FORECAST2023146-13811.7143.297.502155.1083277845101.226.247.46TT-20.286-64.28654411.0951405877763.7642798169050.0072382105825344161114126WETL
2023-02-15 19:00:05FORECAST2023146-13811.7323.4167.574155.1923531886201.226.287.5TT-20.268-64.26854411.1350050722563.8050089153790.0072786722970056161114126WETL
2023-02-15 15:00:06FORECAST2023146-13816.3048.85212.578163.146696170740.035433092.975433095.138.10543309TT-15.696-54.69654414.870547275867.6847591265950.026630451670471161115127.5WETL
2023-02-15 11:00:06FORECAST2023146-13816.3048.85212.578163.146696170740.035433092.975433095.138.10543309TT-15.696-54.69654414.870547275867.6847591265950.026630451670471161115127.5WETL
2023-02-15 07:00:14FORECAST2023146-13816.2328.81612.524163.036419935930.035433092.985433095.168.14543309TT-15.768-53.76854414.8192732459467.630649230440.02613950222338161115127.5WETL
2023-02-15 03:00:17FORECAST2023146-13817.8348.85213.343157.8524042995902.395.197.58TT-14.166-52.16654412.39263493965.0971689405640.039013672068325161115127.5WETL
2023-02-14 23:00:09FORECAST2023146-13817.6369.17613.406152.711288336190.031496082.961496084.377.33149608TT-14.364-48.36454409.9543134727262.6046513693960.037186573865018161115127.5WETL
2023-02-14 19:00:07FORECAST2023146-13817.6369.19413.415152.374514355670.031496082.951496084.367.31149608TT-14.364-48.36454409.7934748402662.4420817149080.037186573865018161115127.5WETL
2023-02-14 15:00:08FORECAST2023146-13819.1485.43212.29154.754507076670.362204923.022204924.367.38220492TT-12.852-47.85254410.9271827407663.5928336094490.053057994287469161115127.5WETL
2023-02-14 11:00:09FORECAST2023146-13826.99613.20820.102161.087567542170.429134093.559134094.598.14913409TT-5.004-36.00454413.9107613214466.6758777207970.22850041151286161115127.5WETL
2023-02-14 07:00:23FORECAST2023146-13827.01413.15420.084161.233315601510.429134093.549134094.578.11913409TT-4.986-37.98654413.9788615444866.7471844357550.22910526353117161115127.5WETL
2023-02-14 03:00:19FORECAST2023146-13827.8616.41222.136163.214531274350.582677483.982677484.278.25267748TT-4.14-38.1454414.9020807466967.7180486338250.2585229082591621151210WETL
2023-02-13 23:00:04FORECAST2023146-13824.6224.6224.62158.891342405050.106299273.256299274.737.98629927TT-7.38-41.3854412.881525490865.6032998394760.15683230630645161115127.5WETL
2023-02-13 19:00:09FORECAST2023146-13824.8924.8924.89158.594350684290.106299273.256299274.768.01629927TT-7.11-41.1154412.7419024884965.4585340253610.16414072822776161115127.5WETL
2023-02-13 15:00:08FORECAST2023146-13823.66623.66623.666143.14676795750.03937011.74937014.56.2493701TT-8.334-45.33454405.3324692304658.0220329185740.13274351270021161115127.5WETL
2023-02-13 11:00:08FORECAST2023146-13825.05225.05225.052150.238509074450.059055151.639055154.866.49905515TT-6.948-36.94854408.7701381284661.4130161065750.1686298615329161115127.5WETL
2023-02-13 07:00:19FORECAST2023146-13825.05225.05225.052150.248931778910.059055151.659055154.946.59905515TT-6.948-36.94854408.775145023661.4180288775640.1686298615329161115127.5WETL
2023-02-13 03:00:19FORECAST2023146-13824.06224.06224.062150.967634512740.027559071.757559074.966.71755907TT-7.938-40.93854409.1200784467661.7638904747740.14241524074719161115127.5WETL