MOUNT RAINIER
GEOLOGY & WEATHER
Hello guest! [ Log In ]
MORA Debris Flow Hazard - View Day

Daily Debris Flow Hazard (DFH) for Tuesday, February 25, 2020

[ Monday, February 24, 2020 | Index | Today | Wednesday, February 26, 2020 ]

DAY 148 OF WATER YEAR 2020, FORECAST LAST UPDATED 02/26/2020 04:00:03 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): 35.63°F
MINIMUM TEMPERATURE (Tmin): 19.74°F
AVERAGE TEMPERATURE (Tavg): 27.69°F

MAXIMUM TEMPERATURE PERCENTILE (Tmax percentile): 0.594
Maximum Percentile on this day is based on 91 years of historic (1917-2017) records:

DEBRIS FLOW HAZARD MODEL:


Click to zoom in
Degree Days above 32°F
(DD32)
TODAY'S DD32: 4
18-DAY CUMULATIVE DD32: -25

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): 1.27 in
DAY 4-15 (P15): 3.29 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: 184 in
SWE DAY: 56
CALCULATED SNOW DENSITY: 425.47 kg/m3
CALCULATED SWE: 78.14 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: -137

July 11 is the average snow melt-out day (where snow depth goes down to 0 in) at Paradise
Calculated Variables D0: 3
D1: 1
D2: 1
D3: 4
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
2020-02-26 04:00:02OBSERVATION2020148-13735.6300619.7400227.68504183.649567083330.0299999999999731.273.294.56TF3.63006-25.3699456425.4737184802 78.1380642042240.5941094581921591 31141210WETL
2020-02-26 00:00:02FORECAST2020149-13731.731.731.71860.00191.24193.294.5319TF-0.3-29.356426.5000538453979.3290100152430.42619214760915912114128WETL
2020-02-25 12:00:01FORECAST2020148-13743.0332.1137.57185.727486666670.07871.31873.294.6087TF11.03-17.9756426.38137249879.1907406755370.850146192016919151141214WETL
2020-02-25 08:00:02FORECAST2020148-13741.4527.334.375185.706738358520.03961.27963.294.5696TF9.45-19.5556426.3723331076279.1802153077290.80686690802239141141212WETL
2020-02-25 04:00:03FORECAST2020148-13737.2325.2531.24185.633242993820.03831.27833.294.5683TF5.23-23.7756426.3403096380479.1429342970980.659400140694039131141210WETL
2020-02-25 00:00:03FORECAST2020148-13741.7324.1432.935180.717093039610.10481.19483.294.4848TF9.73-18.2756424.1846090733976.6574094638880.815046044278529141141212WETL
2020-02-24 20:00:03FORECAST2020148-13741.0325.833.415180.730916065060.04341.16343.294.4534TF9.03-11.9756424.1907081978976.664375278890.794192708339929141141212WETL
2020-02-24 16:00:02FORECAST2020148-13740.8525.733.275180.73701803520.05331.17333.294.4633TF8.85-12.1556424.1934004980676.6674502762310.788613525171449141141212WETL
2020-02-24 12:00:02FORECAST2020148-13740.7224.1932.455180.768650389910.11931.23933.294.5293TF8.72-12.2856424.2073565992776.6833913379230.784529696976019141141212WETL
2020-02-24 08:00:03FORECAST2020148-13740.4423.4331.935180.863126548080.06791.20793.294.4979TF8.44-13.5656424.2490325252776.7310064575180.775580281985979141141212WETL
2020-02-24 04:00:04FORECAST2020148-13740.1623.9132.035180.569389156710.04631.22633.294.5163TF8.16-15.8456424.1194244146576.5829853960480.766423990249219141141212WETL
2020-02-23 23:59:22FORECAST2020148-13739.9924.5832.285181.383253840730.06071.22073.294.5107TF7.99-20.0156424.4782953929176.9932544031330.760765450214199141141212WETL
2020-02-23 20:00:02FORECAST2020148-13739.2625.2632.26177.674724102270.05151.27153.294.5615TF7.26-21.7456422.8370028615375.1274478236540.735638943896849141141212WETL
2020-02-23 16:00:02FORECAST2020148-13739.2125.6332.42177.524765060110.08421.28423.294.5742TF7.21-20.7956422.7703093710975.0521998454950.733870144305659141141212WETL
2020-02-23 11:59:23FORECAST2020148-13739.3226.1732.745181.233983839160.091.313.294.6TF7.32-21.6856424.412530814976.9179737508450.737753585535919141141212WETL
2020-02-23 08:00:03FORECAST2020148-13739.6723.6231.645182.54318937050.1241.8643.295.154TF7.67-14.3356424.9884847665477.578753455020.749914203627099141151215WETL
2020-02-23 04:00:03FORECAST2020148-13739.6625.0832.37182.000093905820.13291.91293.295.2029TF7.66-12.3456424.7497952250877.3045026174450.749570951275489141151215WETL
2020-02-23 00:00:02FORECAST2020148-13739.5125.1932.35184.076976175760.11472.08473.285.3647TF7.51-18.4956425.660806172578.3543540767690.744392389672969141151215WETL
2020-02-22 20:00:02FORECAST2020148-13740.6225.232.91184.429335942260.07812.02813.315.3381TF8.62-10.3856425.8148902218678.5327574379460.781357442358389141151215WETL
2020-02-22 16:00:02FORECAST2020148-13740.4224.4732.445184.060510374690.04351.99353.315.3035TF8.42-9.5856425.6536024388578.3460193077210.77493308011579141151215WETL
2020-02-22 12:00:02FORECAST2020148-13739.722.9231.31183.586203717360.05641.87643.315.1864TF7.7-9.356425.445965452678.1060096843080.750942463507649141151215WETL
2020-02-22 08:00:02FORECAST2020148-13735.1725.3130.24184.826500552940.0012.0613.345.401TF3.17-12.8356425.9884018217578.7339455848520.57474609386769131151212.5WETL
2020-02-22 04:00:04FORECAST2020148-13740.3226.1733.245184.964218071430.00122.01123.355.3612TF8.32-11.6856426.0485264115778.8037325482020.771681280931289141151215WETL
2020-02-22 00:00:03FORECAST2020148-13740.3323.9832.155188.159058656290.00162.13163.365.4916TF8.33-15.6756427.4374400240980.4262263493870.772007642367759141151215WETL
2020-02-21 20:00:03FORECAST2020148-13742.7225.434.06188.144390902250.00122.30123.355.6512TT10.72-1.2856427.4310891364180.4187619182560.842207668300039141151215WETL
2020-02-21 16:00:01FORECAST2020148-13742.6325.8934.26191.821657577530.00112.39113.345.7311TT10.63-2.3756429.015899843482.2945410350770.839852257481499141151215WETL
2020-02-21 12:00:03FORECAST2020148-13742.6325.8934.26190.763741060730.00112.19113.365.5511TF10.63-2.3756428.5614797703281.7539911555080.839852257481499141151215WETL
2020-02-21 07:57:22FORECAST2020148-13741.9824.3933.185189.991172617230.00241.74243.395.1324TF9.98-8.0256428.2288565033981.3597025956160.82216443863789141151215WETL
2020-02-21 04:00:02FORECAST2020148-13742.225.6333.915188.869683100870.00241.58243.384.9624TF10.2-5.856427.7448450592180.7880333343620.828283967213579141151215WETL
2020-02-21 00:00:02FORECAST2020148-13742.225.6333.915190.805255983620.00241.56243.384.9424TF10.2-12.856428.5793352209481.7751897661230.828283967213579141151215WETL
2020-02-20 19:59:26FORECAST2020148-13744.152836.075188.031259874480.02261.26263.394.6526TF12.158.1556427.3820973771480.361194217620.87658380345839151141214WETL
2020-02-20 16:00:02FORECAST2020148-13743.827.9635.88187.555778294770.01511.31513.374.6851TF11.88.856427.1760345396180.119333626950.868697373637089151141214WETL
2020-02-20 11:57:11FORECAST2020148-13743.827.9635.88187.327970209990.01511.26513.414.6751TF11.89.856427.077219512680.0035086542210.868697373637089151141214WETL
2020-02-20 08:00:02FORECAST2020148-13741.1823.7532.465188.287610389590.0461.4363.334.766TF9.186.1856427.4930906122180.4916524894330.798774720613179141141212WETL
2020-02-20 04:00:04FORECAST2020148-13743.4526.1334.79186.708809117920.01650.90653.354.2565TF11.452.4556426.8083604337579.6888806981560.860470700185429151131210.5WETL
2020-02-20 00:00:03FORECAST2020148-13743.4526.1434.795190.404265065870.01650.90653.414.3165TF11.452.4556428.4067914025981.5704802662380.860470700185429151131210.5WETL
2020-02-19 20:00:02FORECAST2020148-13739.0621.3330.195194.333838542350.00081.34083.344.6808TF7.064.0656430.0901082202183.5810616495290.728528081341899141141212WETL
2020-02-19 16:00:02FORECAST2020148-13733.0122.0327.52197.010799658390.00081.65083.344.9908TF1.01-1.9956431.2272580348184.9564269399320.482182276893859121151210WETL
2020-02-19 11:59:26FORECAST2020148-13741.625.733.65196.157264489160.01881.51883.374.8888TF9.61.656430.8655230000384.5174023543760.811275642184579141151215WETL
2020-02-19 08:00:03FORECAST2020148-13741.625.733.65196.58632849490.01881.51883.344.8588TF9.6-4.456431.0474617852984.7380379194160.811275642184579141151215WETL
2020-02-19 04:00:03FORECAST2020148-13741.1424.132.62198.698165213680.01851.67853.365.0385TF9.142.1456431.9400735359185.8257000938460.797558857988199141151215WETL
2020-02-19 00:00:03FORECAST2020148-13741.1424.132.62200.51305361320.01851.67853.375.0485TF9.144.1456432.7033576973986.7626715605890.797558857988199141151215WETL
2020-02-18 20:00:02FORECAST2020148-13735.6217.3326.475205.473234543630.02072.10073.355.4507TF3.62-0.3856434.7715909462689.3339250794050.59368831528159131151212.5WETL
2020-02-18 16:00:03FORECAST2020148-13734.2115.1324.67203.825212034380.00571.98573.345.3257TF2.212.2156434.087307952388.4779375848110.533809386318889131151212.5WETL
2020-02-18 12:00:02FORECAST2020148-13726.6615.1320.895204.253547157840.00271.98273.345.3227TF-5.34-7.3456434.2654345298188.7002554107540.23265691230305911115127.5WETL
2020-02-18 08:01:25FORECAST2020148-13714.1311.6112.87204.1655493832601.813.385.19TF-17.87-24.8756434.228855768988.6545728961240.018486948110314911115127.5WETL
2020-02-18 04:00:05FORECAST2020148-13711.9911.3111.65204.741334975201.473.765.23TF-20.01-33.0156434.4680491128188.9535683794270.010211657259878911114126WETL