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MORA Debris Flow Hazard - View Day

Daily Debris Flow Hazard (DFH) for Wednesday, October 6, 2021

[ Tuesday, October 5, 2021 | Index | Today | Thursday, October 7, 2021 ]

DAY 6 OF WATER YEAR 2022, FORECAST LAST UPDATED 10/07/2021 04:00:05 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:
M
MEDIUM

MODEL USED FOR HAZARD CLASS DETERMINATION:

WET

MODEL VARIABLES AND OUTPUT:
Temperature at Paradise MAXIMUM TEMPERATURE (Tmax): 36.90°F
MINIMUM TEMPERATURE (Tmin): 30.63°F
AVERAGE TEMPERATURE (Tavg): 33.76°F

MAXIMUM TEMPERATURE PERCENTILE (Tmax percentile): 0.066
Maximum Percentile on this day is based on 92 years of historic (1917-2017) records:

DEBRIS FLOW HAZARD MODEL:


Click to zoom in
Degree Days above 32°F
(DD32)
TODAY'S DD32: 5
18-DAY CUMULATIVE DD32: 340

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: 0.11 in
DAY 1-3 (P3): 0.11 in
DAY 4-15 (P15): 4.45 in
18-DAY TOTAL (P18): 4.56 in

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

PRECIP THRESHOLD B (PB) EXCEEDED: False
P3 > (-0.67 * P15 + 4.5)
Snow at Paradise DEPTH: 0 in
SWE DAY: 88
CALCULATED SNOW DENSITY: 354.47 kg/m3
CALCULATED SWE: 0.00 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: 86

July 11 is the average snow melt-out day (where snow depth goes down to 0 in) at Paradise
Calculated Variables D0: 1
D1: 4
D2: 2
D3: 2
D4: 5
D5: 2
HSdry: 35.0

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
2021-10-07 04:00:05OBSERVATION202268636.8999630.6300233.7649900.110000000000010.110000000000014.454.56TF4.89996339.8999688354.46750114127 00.06621994911075192 14225235WETM
2021-10-07 00:00:01FORECAST202268632.6332.6332.6300.00020.00024.454.4502TF0.63335.6387353.5406978345700.0290846917314639214215217.5WETM
2021-10-06 12:00:02FORECAST202268640.4332.5436.48500.08020.08024.454.5302TF8.43343.4387353.5406978345700.118440666636839214215217.5WETM
2021-10-06 08:00:02FORECAST202268636.6832.1734.42500.08690.08694.454.5369TF4.68339.6887353.5406978345700.0636777872924339214215217.5WETM
2021-10-06 04:00:05FORECAST202268638.7632.1735.46500.15680.15684.454.6068TF6.76341.7687353.5406978345700.09094377360159214225235WETM
2021-10-06 00:00:02FORECAST202268640.9730.3335.6500.17830.17834.454.6283TF8.97343.9788354.4675011412700.128472907597359214225235WETM
2021-10-05 20:00:01FORECAST202268640.8429.8635.3500.16760.42764.454.8776TF8.84353.8488354.4675011412700.126005616163089214225235WETM
2021-10-05 16:00:02FORECAST202268640.8931.8136.3500.12610.38614.454.8361TF8.89353.8988354.4675011412700.126950647646799214225235WETM
2021-10-05 12:00:02FORECAST202268640.3430.5435.4400.10450.36454.454.8145TF8.34353.3488354.4675011412700.116823823068919214225235WETM
2021-10-05 08:00:02FORECAST202268640.1431.0935.61500.12020.40024.454.8502TF8.14355.1488354.4675011412700.113286837438039214225235WETM
2021-10-05 04:00:08FORECAST202268639.4330.4534.9400.12720.39724.454.8472TF7.43353.4388354.4675011412700.101347129504089214225235WETM
2021-10-05 00:00:02FORECAST202268639.6530.735.17500.14890.43894.454.8889TF7.65343.6588354.4675011412700.104944770501319214225235WETM
2021-10-04 20:00:03FORECAST202268639.1230.7434.9300.16010.45014.454.9001TF7.12356.1288354.4675011412700.0964309695534279214225235WETM
2021-10-04 16:00:03FORECAST202268634.7428.9431.8400.1680.4184.454.868TF2.74351.7488354.4675011412700.0444092944341089214225235WETL
2021-10-04 12:00:02FORECAST202268639.5130.9435.22500.15590.37594.454.8259TF7.51358.5188354.4675011412700.102644856548969214225235WETM
2021-10-04 08:00:03FORECAST202268640.1430.6835.4100.1280.3584.454.808TF8.14359.1488354.4675011412700.113286837438039214225235WETM
2021-10-04 04:00:07FORECAST202268639.7530.4335.0900.12860.32864.454.7786TF7.75356.7588354.4675011412700.106610179874979214225235WETM
2021-10-04 00:00:02FORECAST202268640.1730.5835.37500.16040.46044.454.9104TF8.17355.1788354.4675011412700.113812474989989214225235WETM
2021-10-03 20:00:02FORECAST202268641.6429.435.5200.15020.45024.464.9102TF9.64366.6488354.4675011412700.141717881496759214225235WETM
2021-10-03 16:00:02FORECAST202268642.0930.8636.47500.17390.46394.464.9239TF10.09365.0988354.4675011412700.15111450911869214225235WETM
2021-10-03 12:00:03FORECAST202268642.2228.2235.2200.08440.35444.464.8144TF10.22361.2288354.4675011412700.153904349830359214225235WETM
2021-10-03 08:00:04FORECAST202268636.6229.232.9100.06120.22124.454.6712TF4.62357.6288354.4675011412700.0629976500682939214225235WETM
2021-10-03 04:00:07FORECAST202268642.429.9536.17500.05340.20344.454.6534TF10.4360.488354.4675011412700.157822979302929214225235WETM
2021-10-03 00:00:04FORECAST202268643.1530.3636.75500.04250.18254.454.6325TF11.15349.1588354.4675011412700.174847601879319214225235WETM
2021-10-02 20:00:03FORECAST20226864329.7836.3900.02390.11394.454.5639TF1136088354.4675011412700.171352846017949214225235WETM
2021-10-02 16:00:03FORECAST202268643.0229.7636.3900.02960.07964.454.5296TF11.02358.0288354.4675011412700.171816222544599214215217.5WETM
2021-10-02 12:00:03FORECAST202268642.3129.3635.83500.01320.09324.454.5432TF10.31356.3188354.4675011412700.155855566817029214225235WETM
2021-10-02 08:00:03FORECAST202268636.5427.3731.95500.03810.12814.454.5781TF4.54348.5488354.4675011412700.0620995892593539214225235WETL
2021-10-02 04:00:07FORECAST202268636.4727.3731.9200.03810.13814.454.5881TF4.47349.4788354.4675011412700.0613219798715489214225235WETL
2021-10-02 00:00:04FORECAST202268635.3827.5431.4600.11990.34994.454.7999TF3.38344.3888354.4675011412700.0501670437387559214225235WETL
2021-10-01 20:00:03FORECAST202268640.2629.1234.6900.12820.46824.454.9182TF8.26359.2688354.4675011412700.115399776734899214225235WETM
2021-10-01 16:00:03FORECAST202268640.1629.0934.62500.1320.4924.454.942TF8.16361.1688354.4675011412700.113637070298279214235252.5WETM
2021-10-01 12:00:04FORECAST202268641.827.334.5500.01680.20684.454.6568TF9.8361.888354.4675011412700.145012642019649214225235WETM
2021-10-01 10:03:08FORECAST202268641.827.334.5500.01680.03684.454.4868TF9.8359.888354.4675011412700.145012642019649214215217.5WETM
2021-10-01 08:00:03FORECAST202268640.7928.4534.6200.06860.08864.454.5386TF8.79363.7988354.4675011412700.12693191879579114215217.5WETM
2021-10-01 04:00:04FORECAST202268640.7828.4334.60500.06860.08864.454.5386TF8.78362.7888354.4675011412700.126741473616869114215217.5WETM
2021-10-01 00:00:04FORECAST202268644.834.5139.65500.11360.12363.964.0836TF12.8371.888354.4675011412700.219474465933749114225235WETM
2021-09-30 20:00:04FORECAST202268645.6136.3540.9800.090.094.234.32TF13.61385.6188354.4675011412700.242007490785629114215217.5WETMH
2021-09-30 16:00:03FORECAST202268645.6436.2940.96500.090.094.284.37TF13.64383.6488354.4675011412700.242865433993269114215217.5WETMH
2021-09-30 14:50:15FORECAST202268648.9638.1243.5400.07320.07324.284.3532TF16.96388.9688354.4675011412700.347010173552399124215220WETMH
2021-09-30 14:45:45FORECAST202268648.9638.1243.5400.07320.07324.284.3532TF16.96388.9688354.4675011412700.347010173552399124215220WETMH
2021-09-30 14:44:56FORECAST202268648.9638.1243.5400.07320.07324.284.3532TF16.96388.9688354.4675011412700.347010173552399124215220WETMH
2021-09-30 14:43:20FORECAST202268648.9638.1243.5400.07320.07324.514.5832TF16.96390.9688354.4675011412700.347010173552399124215220WETMH
2021-09-30 14:40:27FORECAST202268648.9638.1243.5400.07320.07324.514.5832TF16.96390.9688354.4675011412700.347010173552399124215220WETMH
2021-09-30 12:00:04FORECAST202268651.139.945.500.20520.20524.514.7152TF19.1394.188354.4675011412700.421657042098459124225240WETMH
2021-09-30 08:00:03FORECAST202268651.6240.446.0100.21640.21644.664.8764TF19.62387.6288354.4675011412700.440346253815879124225240WETMH
2021-09-30 04:00:07FORECAST202268651.6140.4246.01500.21640.21644.754.9664TF19.61384.6188354.4675011412700.439985450653649124225240WETMH
2021-09-30 00:00:04FORECAST202268642.2731.8437.05500.07590.24594.34.5459TF10.27375.2788354.4675011412700.157326230551799114225235WETM
2021-09-29 20:00:03FORECAST202268642.2434.438.3200.07190.24194.264.5019TF10.24379.2488354.4675011412700.156666295375889114225235WETM
2021-09-29 16:00:02FORECAST202268642.2933.6537.9700.11870.29874.234.5287TF10.29380.2988354.4675011412700.157767198448129114225235WETM
2021-09-29 12:00:03FORECAST202268639.6534.1136.8800.00550.15554.264.4155TF7.65382.6588354.4675011412700.106486157978019114225235WETM
2021-09-29 08:00:04FORECAST202268635.4134.3134.8600.00550.13554.384.5155TF3.41376.4188354.4675011412700.0511057174028989114225235WETM
2021-09-29 04:00:08FORECAST202268635.3234.6534.98500.00550.13554.354.4855TF3.32385.3288354.4675011412700.0502445738908569114225235WETM