MOUNT RAINIER
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MORA Debris Flow Hazard - View Day

Daily Debris Flow Hazard (DFH) for Sunday, December 12, 2021

[ Saturday, December 11, 2021 | Index | Today | Monday, December 13, 2021 ]

DAY 73 OF WATER YEAR 2022, FORECAST LAST UPDATED 12/13/2021 07:00:06 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): 24.18°F
MINIMUM TEMPERATURE (Tmin): 17.82°F
AVERAGE TEMPERATURE (Tavg): 21.00°F

MAXIMUM TEMPERATURE PERCENTILE (Tmax percentile): 0.171
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: -8
18-DAY CUMULATIVE DD32: 49

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: 0.64 in
DAY 1-3 (P3): 3.27 in
DAY 4-15 (P15): 8.95 in
18-DAY TOTAL (P18): 12.22 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: 68 in
SWE DAY: 20
CALCULATED SNOW DENSITY: 332.40 kg/m3
CALCULATED SWE: 22.46 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: 153

July 11 is the average snow melt-out day (where snow depth goes down to 0 in) at Paradise
Calculated Variables D0: 1
D1: 2
D2: 1
D3: 5
D4: 1
D5: 2
HSdry: 10.0

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
2021-12-13 07:00:06OBSERVATION20227315324.1800817.8199621.0000267.5704029166670.639999999999993.278.9512.22TT-7.8199249.1800820332.4010545844 22.4604731881930.1707751322151816 12151210WETL
2021-12-13 03:00:05OBSERVATION20227315324.1800817.8199621.0000267.5704029166670.639999999999993.278.9512.22TT-7.8199249.1800820332.4010545844 22.4604731881930.1707751322151816 12151210WETL
2021-12-12 11:00:02FORECAST20227315327.5320.6724.159.679816955930.35772.98778.9511.9377TT-4.4752.5320327.0262197233919.5168649328820.278250614067351622151212.5WETL
2021-12-12 07:00:05FORECAST20227315327.3419.123.2260.1586105317740.45083.08088.9512.0308TT-4.6652.3420327.3554387649919.6932483461210.271383514798591622151212.5WETL
2021-12-12 03:00:12FORECAST20227315326.3220.2223.2760.7565713268660.54733.17738.9512.1273TT-5.6851.3220327.7660354787219.9139405130870.236019898011141612151210WETL
2021-12-11 23:00:02FORECAST20227315327.6718.5523.1146.6259872067850.90172.33178.9511.2817TT-4.3354.6720317.8943771687214.8221391629780.28336414646361622151212.5WETL
2021-12-11 19:00:02FORECAST20227315325.521.8423.6746.8134968614190.96212.39218.9511.3421TT-6.552.520318.0277049602714.8879889680020.209536110395451612151210WETL
2021-12-11 15:00:02FORECAST2022731532821.7124.85546.9873123261570.99092.42098.9511.3709TT-45520318.1512388665914.9490716275780.29559241756371622151212.5WETL
2021-12-11 11:00:05FORECAST2022731532821.8224.9151.0630551453991.00312.43318.9511.3831TT-45520321.0323672288716.3928934712660.29559241756371622151212.5WETL
2021-12-11 07:00:05FORECAST20227315324.2721.1822.72553.9264236044010.99413.06418.9512.0141TT-7.7348.2720323.0387084487217.4203222324240.173260651899141612151210WETL
2021-12-11 03:00:04FORECAST20227315324.4521.5422.99556.2682098678891.00583.73588.9512.6858TT-7.5547.4520324.668768380918.2685303968060.178304758244941612151210WETL
2021-12-10 23:00:04FORECAST20227315324.1721.4922.8355.8654619586260.99054.09058.9513.0405TT-7.8351.1720324.3891153651218.1221477842230.170497932253351612151210WETL
2021-12-10 19:00:03FORECAST20227315323.7221.3522.53555.1621853143750.93143.91148.9512.8614TT-8.2850.7220323.900100030117.8670373412050.15841627410781612151210WETL
2021-12-10 15:00:02FORECAST20227315323.7321.2922.5155.5375334673931.02693.89698.9512.8469TT-8.2750.7320324.1612027499118.0031136465540.158678516124691612151210WETL
2021-12-10 11:00:02FORECAST20227315323.9321.1522.5458.241577022581.00453.78458.9512.7345TT-8.0746.9320326.0348730883618.9887851730230.16398293208051612151210WETL
2021-12-10 09:23:04FORECAST20227315323.7721.2922.5357.7376137070581.00673.76678.9512.7167TT-8.2351.7720325.6866447292618.8043696829260.159730321368421612151210WETL
2021-12-10 07:00:09FORECAST20227315328.5621.925.2385.8271389311491.13963.98968.9512.9396TT-3.4456.5620344.4317017170529.5615875155610.316879286684041622151212.5WETL
2021-12-10 03:00:09FORECAST20227315328.6221.7825.286.2869265649131.14834.04838.9512.9983TT-3.3857.6220344.7275445681429.7454803230540.319198097640711622151212.5WETL
2021-12-09 23:00:02FORECAST20227315323.7521.8922.8241.9969575965510.81643.78648.4112.1964TT-8.2553.7520314.5827145233813.2115169224460.159203851314411612151210WETL
2021-12-09 19:00:03FORECAST20227315323.6720.9522.3142.7057995321020.88873.81878.4112.2287TT-8.3353.6720315.0923566104413.4562710155030.157109319798461612151210WETL
2021-12-09 15:00:03FORECAST20227315328.5919.824.19539.0855507362840.83263.70268.4112.1126TT-3.4158.5920312.4798249031312.2134460503160.318037801228721622151212.5WETL
2021-12-09 11:00:03FORECAST20227315328.819.2724.03540.2860807466710.63053.61058.4112.0205TT-3.259.820313.3488441932612.6235968390460.326196759010251622151212.5WETL
2021-12-09 09:37:03FORECAST20227315323.6619.6121.63541.3810375033760.6873.6878.4512.137TT-8.3458.6620314.1391355836612.9994033508660.156848780080431612151210WETL
2021-12-09 09:35:44FORECAST20227315323.6619.6121.63544.0579254200430.6873.6878.3812.067TT-8.3451.6620316.06196514713.9250344885590.156848780080431612151210WETL
2021-12-08 23:00:03FORECAST20227315326.4820.2923.38546.1068107344880.75233.62238.6212.2423TT-5.5253.4820317.52488787614.6400599087880.241394070010941612151210WETL
2021-12-08 19:00:05FORECAST20227315328.6917.9323.3146.6783565994090.75433.64438.6312.2743TT-3.3150.6920317.9316205516114.8405255583360.321912331889631622151212.5WETL
2021-12-08 15:00:02FORECAST20227315328.7217.9323.32546.1046232803460.72573.43578.712.1357TT-3.2853.7220317.5233300701214.6392935156040.323078498868341622151212.5WETL
2021-12-08 11:00:01FORECAST20227315328.5320.2424.38547.3594932759790.71793.27798.7312.0079TT-3.4756.5320318.4155714903115.0800001169620.315722563466371622151212.5WETL
2021-12-08 10:37:50FORECAST20227315328.5320.2424.38547.3594932759790.71793.27798.7312.0079TT-3.4756.5320318.4155714903115.0800001169620.315722563466371622151212.5WETL
2021-12-08 07:00:06FORECAST20227315322.7320.7121.7258.3055884096930.62793.12798.8912.0179TT-9.2756.7320326.0790717534119.0122321466690.133856147536139312151210WETL
2021-12-08 03:00:13FORECAST20227315322.7520.7721.7659.0351537541830.62793.14799.0512.1979TT-9.2556.7520326.5823155978919.2798372147180.134324939936519312151210WETL
2021-12-07 23:00:02FORECAST20227315329.3618.2923.82550.9236946759850.66413.44419.3912.8341TT-2.6469.3620320.9343454969416.3431626211230.348355185954759322151212.5WETL
2021-12-07 19:00:02FORECAST20227315329.1320.0824.60550.1595941706170.62853.33859.4212.7585TT-2.8767.1320320.3962843518916.0709475968640.339186345566579322151212.5WETL
2021-12-07 15:00:03FORECAST20227315328.7920.7924.7950.4698003614240.61333.32339.3512.6733TT-3.2165.7920320.6148499952916.181367472170.32580630604349322151212.5WETL
2021-12-07 12:27:39FORECAST20227315323.8721.1522.5151.0224547454810.58753.43759.2812.7175TT-8.1362.8720321.003813777616.3784025615950.162379693473169312151210WETL
2021-12-07 11:00:03FORECAST20227315327.3520.2323.7967.46154130760.58753.46759.3212.7875TT-4.6567.3520332.3276317221422.419334255080.27174282781439322151212.5WETL
2021-12-07 07:00:15FORECAST20227315324.0219.1521.58568.2767552907650.59623.39629.3612.7562TT-7.9863.0220332.8769684882922.7277593194060.166406929872629312151210WETL
2021-12-07 03:00:09FORECAST20227315327.1718.6722.9268.11411092910.59623.36629.3312.6962TT-4.8366.1720332.767460435522.6661597136990.265311605906699322151212.5WETL
2021-12-06 23:00:02FORECAST20227315323.3718.5520.9648.6219542020750.85774.08778.4112.4977TT-8.6370.3720319.3103450633515.5254929739190.14941650610599312151210WETL
2021-12-06 19:00:03FORECAST20227315328.7917.7323.2648.285483399420.7363.9168.3512.266TT-3.2177.7920319.0721505896715.4065530305150.32580630604349322151212.5WETL
2021-12-06 15:00:03FORECAST20227315328.8317.5223.17548.1235294488670.7364.0068.2512.256TT-3.1773.8320318.9574275246615.3493571564180.327369259249259322151212.5WETL
2021-12-06 11:00:03FORECAST20227315324.1919.621.89555.974998051250.7824.1228.2812.402TT-7.8171.1920324.4652014367618.1619390181210.171048212919619312151210WETL
2021-12-06 07:00:04FORECAST20227315329.4625.927.6858.4873723921370.76324.34328.5512.8932TT-2.5463.4620326.2045510170819.0788470513460.352369819578319322151212.5WETL
2021-12-06 03:00:06FORECAST20227315329.6325.6527.6459.6701891035810.76324.24328.7813.0232TT-2.3770.6320327.0195954931819.5133211036550.359232363741099322151212.5WETL
2021-12-05 23:00:04FORECAST20227315329.525.2127.35556.9654575648790.57964.74968.7713.5196TT-2.571.520325.1522351538618.5224458537830.353980317748089322151212.5WETL
2021-12-05 19:00:06FORECAST20227315329.0226.1227.5755.0352854249570.47324.36328.9113.2732TT-2.9881.0220323.8117685803217.8210731077780.334834260342469322151212.5WETL
2021-12-05 15:00:06FORECAST20227315329.2425.1227.1857.3680592860850.42844.31848.9113.2284TT-2.7678.2420325.4310067402318.6693452882040.343559979631519322151212.5WETL
2021-12-05 11:00:03FORECAST20227315329.8927.8428.86564.459007866471.78425.13428.9514.0842TT-2.1172.8920330.294518484821.2904569652640.369815710849929322151212.5WETL
2021-12-05 07:00:18FORECAST20227315329.7428.9429.3462.3315765703571.44834.79839.1113.9083TT-2.2671.7420328.844551254820.4973993262830.363697311866249322151212.5WETL
2021-12-05 03:00:12FORECAST20227315331.4430.4430.9454.1015040965560.77124.20129.1313.3312TT-0.5675.4420323.1609133136917.4834914754870.434705415459469322151212.5WETL