NWS - NWSChat-Dual Pol-Warning-Adivsory.PPT · Sierra Warning/Advisory Criteria • High Wind...
Transcript of NWS - NWSChat-Dual Pol-Warning-Adivsory.PPT · Sierra Warning/Advisory Criteria • High Wind...
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I-80 CoalitionI-80 Coalition
– National Weather Service - Reno– Rhett Milne (WCM)
– National Weather Service - Reno– Rhett Milne (WCM)
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Discussion TopicsDiscussion Topics
• NWSChat Update• NWSChat UpdateNWSChat Update• Dual Pol Doppler• Travel Route Forecasts
NWSChat Update• Dual Pol Doppler• Travel Route Forecasts• Travel Route Forecasts• Watch vs Warning vs Advisory
iNWS i d
• Travel Route Forecasts• Watch vs Warning vs Advisory
iNWS i d• iNWS reminder• iNWS reminder
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Dual Pol Doppler RadarDual Pol Doppler Radar
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Watch/Warning/AdvisoryWatch/Warning/Advisory
• Watch• Watch– It could happen (24-72 hours in advance)– Winter Storm, High Wind, Fire Weather– It could happen (24-72 hours in advance)– Winter Storm, High Wind, Fire Weather
• Warning– It is going to happen (0-24 hours)
• Warning– It is going to happen (0-24 hours)– Dangerous conditions
• Whiteouts, Wind Damage, Wildfire growth• Advisory
– Dangerous conditions• Whiteouts, Wind Damage, Wildfire growth
• AdvisoryAdvisory– It is going to happen (0-24 hours)– Conditions not overly dangerous
Advisory– It is going to happen (0-24 hours)– Conditions not overly dangerous
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y g• Slick Roads, Gusty Winds
y g• Slick Roads, Gusty Winds
weather.gov/reno
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Warning vs AdvisoryWarning vs Advisory
• Warning Trouble will come find you!• Warning Trouble will come find you!Warning Trouble will come find you!
• Advisory You have to find trouble
Warning Trouble will come find you!
• Advisory You have to find trouble• Advisory You have to find trouble.
W t h A W i Ad i ill
• Advisory You have to find trouble.
W t h A W i Ad i ill• Watch A Warning or Advisory will very likely be issued.
• Watch A Warning or Advisory will very likely be issued.
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On Your Marks:On Your Marks:
• Special Weather Statement/Outlook = Get Ready• Special Weather Statement/Outlook = Get ReadySpecial Weather Statement/Outlook Get Ready– (48 hrs – 6 days)
Special Weather Statement/Outlook Get Ready– (48 hrs – 6 days)
• Watch = Get Set – (24-72 hours)
• Watch = Get Set – (24-72 hours)
• Warning or Advisory = Go • Warning or Advisory = Go – (Occuring or will occur within the next 24 hours) – (Occuring or will occur within the next 24 hours)
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Sierra Warning/Advisory Criteria
Sierra Warning/Advisory CriteriaCriteriaCriteria
• Sierra Heavy Snow/Winter Storm Warning-• Sierra Heavy Snow/Winter Storm Warning-y g
5000-7000’: 8” in 12 hrs or 12” in 24 hrs
y g
5000-7000’: 8” in 12 hrs or 12” in 24 hrsAbove 7000’: 12” in 12 hrs or 18” in 24 hrsAbove 7000’: 12” in 12 hrs or 18” in 24 hrs
• Snow Advisory (1/2 of warning criteria)-• Snow Advisory (1/2 of warning criteria)-
5000-7000’: 4” in 12 hrs or 6” in 24 hrsAbove 7000’: 6” in 12 hrs or 9” in 24 hrs5000-7000’: 4” in 12 hrs or 6” in 24 hrsAbove 7000’: 6” in 12 hrs or 9” in 24 hrs
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Sierra Warning/Advisory Criteria
Sierra Warning/Advisory CriteriaCriteriaCriteria
• High Wind Warning- Below 7000’: Gusts >58 MPH• High Wind Warning- Below 7000’: Gusts >58 MPH
• Wind Advisory- Below 7000’: Gusts 45-57 MPH• Wind Advisory- Below 7000’: Gusts 45-57 MPH
• Winter Storm Warning- Heavy snow and high wind(Heavy Snow Warning and High Wind Warning)
• Winter Storm Warning- Heavy snow and high wind(Heavy Snow Warning and High Wind Warning)
• Winter Weather Advisory- Multiple Precipitation Types(Snow, sleet, rain, and Freezing rain)
• Winter Weather Advisory- Multiple Precipitation Types(Snow, sleet, rain, and Freezing rain)
• Blizzard Warning- Most Extreme Storms(not issued for the Sierra)
• Blizzard Warning- Most Extreme Storms(not issued for the Sierra)
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(not issued for the Sierra)(not issued for the Sierra)
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Criteria…That’s So 1990sCriteria…That’s So 1990s
• Impact Driven Warnings and Advisories• Impact Driven Warnings and AdvisoriesImpact Driven Warnings and Advisories– Six inches of snow accumulating, but 35F and
just sluch on roads. Worth a Winter Storm
Impact Driven Warnings and Advisories– Six inches of snow accumulating, but 35F and
just sluch on roads. Worth a Winter Storm Warning? Warning?
– Six inches of snow accumulating, but 27F and accumulating on roads Worth a Winter Storm
– Six inches of snow accumulating, but 27F and accumulating on roads Worth a Winter Stormaccumulating on roads. Worth a Winter Storm Warning? accumulating on roads. Worth a Winter Storm Warning?
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