MOUNT RAINIER
GEOLOGY & WEATHER
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MORA Debris Flow Hazard - View Day

Daily Debris Flow Hazard (DFH) for Sunday, November 14, 2021

[ Saturday, November 13, 2021 | Index | Today | Monday, November 15, 2021 ]

DAY 45 OF WATER YEAR 2022, FORECAST LAST UPDATED 11/15/2021 07:00:11 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): 44.43°F
MINIMUM TEMPERATURE (Tmin): 40.53°F
AVERAGE TEMPERATURE (Tavg): 42.48°F

MAXIMUM TEMPERATURE PERCENTILE (Tmax percentile): 0.750
Maximum Percentile on this day is based on 89 years of historic (1917-2017) records:

DEBRIS FLOW HAZARD MODEL:


Click to zoom in
Degree Days above 32°F
(DD32)
TODAY'S DD32: 12
18-DAY CUMULATIVE DD32: 119

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: 2.18 in
DAY 1-3 (P3): 6.17 in
DAY 4-15 (P15): 17.05 in
18-DAY TOTAL (P18): 23.22 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: 8 in
SWE DAY: 48
CALCULATED SNOW DENSITY: 354.24 kg/m3
CALCULATED SWE: 2.83 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: 125

July 11 is the average snow melt-out day (where snow depth goes down to 0 in) at Paradise
Calculated Variables D0: 4
D1: 4
D2: 1
D3: 5
D4: 1
D5: 2
HSdry: 22.5

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
2021-11-15 07:00:11OBSERVATION20224512544.4300840.5300242.4800559.4695429411762.17999999999996.1717.0523.22TT12.43008119.4300848354.23677342895 21.0662990087760.7495200804794589 44151222.5WETL
2021-11-15 03:00:08OBSERVATION20224512544.4300840.5300242.4800559.4695429411762.17999999999996.1717.0523.22TT12.43008119.4300848354.23677342895 21.0662990087760.7495200804794589 44151222.5WETL
2021-11-14 11:00:01FORECAST20224512546.7740.9743.8737.1417333333330.48994.479917.0521.5299TT14.77121.7748340.0186257785612.6288811270340.817297850691138944151222.5WETL
2021-11-14 07:00:10FORECAST20224512546.441.2643.8336.7591544166670.70644.696417.0521.7464TT14.4121.448339.7679076395412.489580982750.807413147840738944151222.5WETL
2021-11-14 03:00:05FORECAST20224512545.3440.8543.09536.5031504166671.14675.136717.0522.1867TT13.34120.3448339.6000026209612.3964699771730.777340097268928944151222.5WETL
2021-11-13 23:00:02FORECAST20224512545.4340.8943.1612.6305453333331.64325.603217.0522.6532TT13.43117.4348323.453015675554.08538797769340.779992829372268944153267.5WETH
2021-11-13 19:00:01FORECAST20224512546.7241.2643.9912.5910761.58575.545717.0522.5957TT14.72118.7248323.425500407994.07227505597510.815980861173858944153267.5WETH
2021-11-13 15:00:02FORECAST20224512546.4241.1443.7812.6160041.39755.357517.0522.4075TT14.42118.4248323.442878792644.08055665261950.807955653049758944153267.5WETH
2021-11-13 11:00:02FORECAST20224512542.0840.7741.42512.1635281.49345.453417.0522.5034TT10.08114.0848323.127266901383.93036755851850.669992675634588934153260WETH
2021-11-13 07:00:11FORECAST20224512546.0940.4843.28512.3181326918871.51845.468417.0522.5184TT14.09118.0948323.235147848293.98165344187710.798885273777748944153267.5WETH
2021-11-13 03:00:14FORECAST2022451254640.3343.16512.5956724769891.4825.42217.0522.472TT1411748323.428704893224.07380203649170.796367735093118944153267.5WETH
2021-11-12 23:00:02FORECAST20224512542.340.1341.21523.3220157988881.58363.433617.0520.4836TT10.3110.348330.805702051897.71505580961640.67785605104658934152240WETL
2021-11-12 19:00:03FORECAST20224512542.3638.9740.66523.4116390932861.51183.321817.0520.3718TT10.36111.3648330.866497323897.74612702340650.67998706227318934152240WETL
2021-11-12 15:00:02FORECAST20224512542.0838.3840.2323.561585044441.66393.533917.0520.5839TT10.08110.0848330.968181063967.79813494514220.669992675634588934152240WETL
2021-11-12 11:00:04FORECAST20224512545.6938.4542.0722.8887599906781.46363.293617.0520.3436TT13.69114.6948330.51161106647.56500093983130.787553797471288944152245WETL
2021-11-12 07:00:05FORECAST20224512542.1639.8841.0222.8674356013761.5764.17617.0521.226TT10.16113.1648330.497127863157.55762178785040.672861011557368934152240WETL
2021-11-12 03:00:15FORECAST20224512542.1839.8941.03522.6981307005311.59724.877217.0521.9272TT10.18114.1848330.38211068777.49905632950660.673576512687338934152240WETL
2021-11-11 23:00:02FORECAST20224512542.3839.4540.91530.2490548820651.69415.564113.4419.0041TT10.38111.3848335.4640394096910.1474701390630.680696087237098934151220WETL
2021-11-11 19:00:03FORECAST20224512545.9139.8342.8729.9592213333331.71885.758813.4419.1988TT13.91120.9148335.2707689034910.0444511721760.793831536823348944151222.5WETL
2021-11-11 15:00:02FORECAST20224512546.340.9143.60529.9568706666671.41665.196613.4418.6366TT14.3118.348335.2692008202110.0436160874880.804686628097418944151222.5WETL
2021-11-11 11:00:02FORECAST20224512542.3640.2941.32529.4845506666671.30245.112413.4418.5524TT10.36114.3648334.95393546849.87596628131740.67998706227318934152240WETL
2021-11-11 07:00:16FORECAST20224512545.7939.9242.85529.28893251.60845.718413.419.1184TT13.79116.7948334.82325295629.80661565526450.790421025349728944152245WETL
2021-11-11 03:00:06FORECAST20224512542.539.4340.96529.41898451.25984.649813.6818.3298TT10.5113.548334.910141293459.85271625560490.68493630817678934152240WETL
2021-11-10 23:00:04FORECAST20224512546.3237.742.0125.3748346666671.30664.716613.2117.9266TT14.32124.3248332.194749930278.42938685661540.805233796067588944152245WETL
2021-11-10 19:00:03FORECAST20224512546.3836.3841.3825.4027146666671.10834.778313.2918.0683TT14.38119.3848332.213565234488.43912640604770.806869709004748944152245WETL
2021-11-10 15:00:03FORECAST20224512545.8937.0841.48525.6679573333330.89154.081513.3417.4215TT13.89117.8948332.392502252598.53183656573940.793265409626768944152245WETL
2021-11-10 11:00:04FORECAST20224512546.5536.2841.41525.3610176593470.79123.801213.3917.1912TT14.55119.5548332.185424788128.42456042422910.811459144551918944152245WETL
2021-11-10 07:00:08FORECAST20224512546.5335.6941.1125.7846644175831.36954.419513.1417.5595TT14.53117.5348332.471196567118.57265823199520.810922720249998944152245WETL
2021-11-10 03:00:04FORECAST20224512546.7636.3141.53526.2973078674071.20314.423113.6618.0831TT14.76115.7648332.816590304428.75218033861610.817034923570488944152245WETL
2021-11-09 23:00:05FORECAST20224512546.4634.5340.49526.3212609173011.4564.99612.9817.976TT14.46116.4648332.832717686418.76057680403810.809037860511378944152245WETL
2021-11-09 19:00:02FORECAST20224512546.432.9839.6926.4222227206450.73074.520712.4116.9307TT14.4112.448332.900683615258.7959760063370.807413147840738944152245WETL
2021-11-09 15:00:06FORECAST20224512546.4334.2640.34526.2780672213690.85054.120512.6816.8005TT14.43113.4348332.803635032678.74543629290450.808226555381048944152245WETL
2021-11-09 11:00:02FORECAST20224512543.3831.7237.5530.6630118886270.37373.903712.7716.6737TT11.38109.3848335.7398328924810.2947944874680.715263008002558944151222.5WETL
2021-11-09 07:00:05FORECAST20224512543.4833.838.6429.5761781776340.37373.773712.3216.0937TT11.48117.4848335.015124804979.90846702343410.718619265895478944152245WETL
2021-11-09 03:00:05FORECAST20224512544.332.9738.63530.4634639653270.88064.240612.9217.1606TT12.3113.348335.6069228795210.2237494016550.745397976650378944151222.5WETL
2021-11-08 23:00:02FORECAST20224512545.2133.0739.1434.8425657996550.02883.598812.916.4988TT13.21120.2148338.5082220715711.7944950012530.77347643271218944151222.5WETL
2021-11-08 19:00:03FORECAST20224512544.0232.3838.235.4147732115160.32223.862212.8216.6822TT12.02117.0248338.8849500164612.0015336496290.736406124322798944151222.5WETL
2021-11-08 15:00:03FORECAST20224512544.0432.2338.13535.1504111398710.32224.392212.8117.2022TT12.04116.0448338.7109682721811.9058297923510.737053724404228944151222.5WETL
2021-11-08 11:00:07FORECAST20224512539.2331.9935.6135.2164638219790.23613.366112.6516.0161TT7.23115.2348338.7544497565811.9297338243870.562474204509768934151220WETL
2021-11-08 07:00:10FORECAST20224512539.5531.9235.73534.8437440929170.23612.996112.5315.5261TT7.55108.5548338.5089983949611.7949209132230.574946063459798934151220WETL
2021-11-08 03:00:16FORECAST20224512537.4730.2833.87536.1351792075010.02563.005612.0915.0956TT5.47102.4748339.3584704805212.2627791463970.493098531920418924151217.5WETL
2021-11-07 23:00:04FORECAST20224512538.6527.6833.16512.0531333923280.43814.408111.5315.9381TT6.65114.6548323.050209191013.89376726379890.539718488922098934153260WETH
2021-11-07 19:00:04FORECAST20224512540.230.6935.44511.3195269743470.24014.350111.2115.5601TT8.2115.248322.537587550813.65097292252240.600037343016818934153260WETH
2021-11-07 15:00:05FORECAST20224512540.330.6935.49513.0548259767780.10664.176611.6515.8266TT8.3116.348323.748620423814.22648189985470.603863888341978934153260WETH
2021-11-07 11:00:03FORECAST20224512540.5437.9739.25515.53597820761.00166.191611.517.6916TT8.54112.5448325.470924354515.05650918797920.613006221991968934152240WETL
2021-11-07 07:00:05FORECAST20224512539.9138.739.30516.527249833661.00616.916111.1718.0861TT7.91106.9148326.155991631675.39046155844150.588887186000748934152240WETL
2021-11-07 03:00:16FORECAST20224512539.9139.739.80517.2836850540230.74776.657711.1617.8177TT7.91110.9148326.677604488645.64619283018440.588887186000748934152240WETL