Heavy precipitation in southwest flow October 28 2005

Broad southwest flow brought widespread precipitation to most of Utah on October 28 2005 (Fig. 1).

Two significant embedded short wave troughs moved up from the south and enhanced the forced

the majority of this precipitation (Figs. 2, 3,4,5 and 6). A surface trough across the Great Salt Lake was

a focus for heavier moist convection early morning on October 28^th and a weak cold front over far

southern Utah focused thunderstorms during the afternoon hours (Figs. 7 and 8). The most significant

precipitation was orographically forced from Ben Lomond Peak in the northern Wasatch Range south to

Mount Timpanogos. Precipitation amounts on favored slopes in the Wasatch Range received 2 to 3

inches during a 24-h period. The most persistent band of precipitation extended from Mud Springs

across the southern Wasatch Front and into Mount Timpanogos (see precipitation totals). The

thunderstorms in southern Utah produced locally heavy rain in a short duration and caused significant

rises to the Paria and Price Rivers (see hydrographs). Snow levels in northern Utah were about 8000 feet

and new snowfall ranged from 6 to 18 inches above 9000 feet.

Fig. 1. KMTX base reflectivity hourly loop from 0102 UTC 28 October to 1901 UTC 28 October.

Fig. 2. GOES-10 water vapor loop from 0230 UTC 28 October to 0330 UTC 29 October 2005.

Fig. 3. GOES-10 infrared imagery loop from 0230 UTC 28 October to to 0230 UTC 29

October.

Fig. 4. MSAS analysis and 3-h pressure change at 1400 UTC 28 October 2005.

OCT 29

Fig. 5. NAM 500-mb geopotential height, wind, vorticity, and temperature analysis at 0000

UTC 29 October 2005.

Fig. 6. Mesowest for northern Utah at 1600 UTC 28 October 2005.

Fig. 7. MSAS analysis and 3-h pressure change at 2100 UTC 28 October 2005.

Fig. 8. Composite reflectivity mosaic loop from 1400 28 October to 0212 UTC 29 October 2005.

GPS precipitable water plot for KSLC from 26 October to 30 October 2005.

Sundance Mid mountain (7500 ft) 3.48 inches!

28 Oct 8:00 pm 35 5.49 0.08 3.48-58.22OK

28 Oct 7:00 pm 36 5.47 0.06 3.46-58.09OK

28 Oct 6:00 pm 36 5.46 0.06 3.45-58.09OK

28 Oct 5:00 pm 37 5.45 0.07 3.44-58.09OK

28 Oct 4:00 pm 38 5.42 0.10 .41-58.02OK

28 Oct 3:00 pm 39 5.42 0.27 3.42-57.96OK

28 Oct 2:00 pm 39 5.41 0.37 3.40-58.10OK

28 Oct 1:00 pm 38 5.41 0.50 3.40-57.97OK

28 Oct 12:00 pm 37 5.40 0.76 3.38-57.97OK

28 Oct 11:00 am 35 5.38 0.96 3.36-57.84OK

28Oct 10:00 am 33 5.32 1.21 3.30-57.84OK

28 Oct 9:00 am 33 5.15 1.40 3.13-57.77OK

28 Oct 8:00 am 33 5.04 1.66 3.02-57.84OK

28 Oct 7:00 am 32 4.91 1.83 2.87-57.96OK

28 Oct 6:00 am 32 4.64 1.85 2.60-58.41OK

28 Oct 5:00 am 34 4.42 1.99 2.38-58.60OK

28 Oct 4:00 am 35 4.11 2.05 2.07-58.60OK

28 Oct 3:00 am36 3.75 1.74 .71-58.73OK

28 Oct 2:00 am36 3.38 1.37 1.34-58.73OK

28 Oct 1:00 am38 3.08 1.07 1.04-58.60OK

28 Oct 12:00 am39 2.79 0.78 0.75-58.54OK

27 Oct 11:00 pm41 2.43 0.42 0.39-58.60OK

27 Oct 10:00 pm43 2.06 0.05 0.02-58.60OK

27 Oct 9:00 pm47 2.01 0.01-58.79OK

27 Oct 8:00 pm47 2.01 -58.86OK

27 Oct 7:00 pm47 2.01 -58.73OK

 
 PRECIPITATION SNOW




 
 SUNDANCE 7500 FT 3.48 M 

 SNOWBASIN MID BOWL 7400 FT 2.24 M

 FARMINGTON CANYON 8000 FT 2.00 2

 TIMPANOGOS DIVIDE 8200 FT 1.90 5

 MUD SPRINGS 5900 FT 1.70

 CEDAR HILLS 1.55

 NORTHEAST OREM 1.52

 PLEASANT GROVE 5200 FT 1.51

 PINE CREEK 8800 FT  1.50 2

 SOUTH OREM 1.46

 ALTA CENTRAL 1.40 4
 LAYTON 1.39
 DEER CREEK DAM 1.30

 NORTH OGDEN 1.29

 GRAND STAIRCASE 7000 FT  1.28

 HIGHLAND 1.27

 LAYTON BENCH 1.25

 OREM 1.25




 BLACK CEDAR FILLMORE 1.26

 CHEPETA UINTA 10,300 FT 1.20 9

 KANAB 1.20

 ALTA COLLINS 9600 FT 1.18 9

 EAST LAYTON 1.15

 PAYSON 1.12

 SEELEY CREEK 10,000 FT 1.10 7

 NORTH OGDEN 1.06

 FARMINGTON BENCH 1.05

 HORSE HOLLOW 6000 FT 1.00

 NORTHEAST OGDEN BENCH 0.98

 NORTH SALT LAKE 0.97

 BUES CANYON 0.96

 EAST OF COVE FORT 0.95

 SPRINGVILLE 0.94

 PROVO AIRPORT  0.94

 COTTONWOODS HEIGHTS 0.93

 BUCK FLAT 0.92

 SANDY 0.90

 EAST SPRINGVILLE 8400 FT 0.89

 DEER SPRINGS POINT 0.88

 WILLOW GULCH 0.87

 FARMINGTON BENCH  0.86

 SPANISH FORK CANYON 0.78

 PRICE AIRPORT 0.77

 SOUTH OGDEN 0.77

 HORSE RIDGE 8500 FT 0.73

 UPPER AVENUES SLC 0.72

 CENTERVILLE 0.72

 OGDEN AIRPORT 0.72

 YUBA STATE PARK 0.72

 TELEGRAPH FLAT 0.72

 LAVA POINT 7900 FT 0.71

 FIVE POINTS LAKE UINTA 10,900 0.70 6

 COTTONWOODS HEIGHTS 0.69
 JENSEN SPRING  0.65

 UPPER MILLCREEK 0.63




 FISHLAKE 7200 FT 0.63

 SPRING CITY 0.61

 MILFORD 0.63

 HOLLADAY 0.60

 JOES VALLEY 8700 FT 0.59 M

 VERNON 0.58

 NORWAY UINTAS 8300 FT 0.57 M 

 OLYMPUS COVE 0.53

 CLAYTON SPRINGS 10,000 FT 0.50 3

 SEVIER RES 0.47

 AGUA CANYON 0.47

 UINTAH 0.46

 RICHFIELD AIRPORT 0.45

 DELTA 0.45

 TULE VALLEY 0.40

 FIVE MILE WASATCH PLATEAU 0.38

 MENDON 0.37

 ENTERPRISE  0.36

 BEAVER 0.32

 SALT LAKE AIRPORT 0.32

 TAYLORSVILLE 0.32

 MOON LAKE 8200 FT 0.31

 ZION CANYON 0.31

 BLACKTAIL 0.28

 HUNTINGTON  0.26

 HANNA 0.26

 LOGAN AIRPORT 0.20

 DUGWAY DURAND 0.20

 SCOFIELD 0.16

 BRYCE CANYON AIRPORT 0.18

 CEDAR MOUNTAIN 7000 FT 0.08

 SALT FLATS 0.07

 CEDAR AIRPORT 0.07
 WENDOVER 0.05

 ZION NATIONAL PARK 0.05