Veronica Dolan and Christina Persch Fun Facts Salt Lake City hosted the 2002 Winter Olympics Home of Rainbow Bridge which is the worlds largest natural bridge 290 feet above the floor of Bridge Canyon and 270 feet long ID: 584626
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Utah Verification
Veronica Dolan and Christina PerschSlide2
Fun Facts
Salt Lake City hosted the 2002 Winter Olympics
Home of Rainbow Bridge, which is the world’s largest natural bridge (290 feet above the floor of Bridge Canyon and 270 feet long)
Jello capital of the worldSlide3
Synoptic SEtup (3/28 @ 12Z)Slide4
Synoptic SEtup (3/28 @ 18Z)Slide5
Synoptic SEtup (3/29 @ 00Z)Slide6
Synoptic SEtup (3/29 @ 06Z)Slide7
Synoptic SEtup (3/29 @ 12Z)Slide8
Forecast challenges
Data sparse areas, particularly the southeast
Snowfall amounts
Precipitation analysis in constant state of fluctuation while going through verificationWind chill analysisSevere wind analysisSlide9
Categories Not Considered
11. Icestorm
14. Blowing Dust
16. Smoke19. Extreme Chill
21. Nuisance Flood22. Flash Flood
23. Stream Flood
24. River Flood
26. Thunderstorm
27. Severe ThunderstormSlide10
Verification Procedure
METAR Data
CooP/CoCoRahs
Mesonet!/MesowestPublic Information Statement (snow/some precip amounts/some wind)Total QPF/Snowfall AnalysisSlide11
Total QPfSlide12
24 hour snowfall analysisSlide13
Flurries
CoCoRaHS, public information sheet
Filled in gaps with 24 hour snowfall amountsSlide14
Snow Shower
CoCoRaHS, public information sheet
Filled in gaps with 24 hour snowfall amountsSlide15
Snow Squall
CoCoRaHS, public information sheet
Filled in gaps with 24 hour snowfall amountsSlide16
Light Snow
CoCoRaHS, public information sheet
Filled in gaps with 24 hour snowfall amountsSlide17
moderate snow
CoCoRaHS, public information sheet
Filled in gaps with 24 hour snowfall amountsSlide18
heavy Snow
CoCoRaHS, public information sheet
Filled in gaps with 24 hour snowfall amountsSlide19Slide20
Very heavy snow?Slide21
Very Heavy snowSlide22
Blizzard
Mesonet for wind, METARS for visibility
Took elevation into accountSlide23
High winds
Mesonet
MesowestSlide24
Severe winds
Mesonet
MesowestSlide25
Blowing and drifting snow
METARS, looked over verifications for snowSlide26
Fog
Took elevation into account, although some ASOS stations did verifySlide27
Wind Chill
Mesonet
Looking at mountains, but temps and corresponding wind speeds weren’t enough to drop it like it’s cooollldSlide28
Freeze/Frost
METARS and mesonet/mesowestSlide29
Lightning
PSU E-Wall (US Lightning Hourly)Slide30Slide31Slide32
Temp >= 60
°F
Mesonet/MesowestSlide33
Temp <= 40
°F
Mesonet/MesowestSlide34
P>=0.25"
CoCoRaHS, QPF Analysis, MesowestSlide35
Lessons Learned
“We really wanted to verify a lot of zones but the data just didn't support it”
Gaps in data can cause difficulties
QPF/Snowfall Analysis were a good starting point for for snow and rainCooP/CocoRahs was also a good starting point however, mesonet was a major source for data and the public information sheet backed up those verifications