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Chinook

Meteorologist
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Everything posted by Chinook

  1. 18z cross-section of this storm (HWRF)
  2. storm cross-section for tonight (00z)
  3. western Caribbean composite radar
  4. Here is some info you didn't want to hear: #3 Hottest summer at Denver, #3 Fort Collins, #1 Cheyenne
  5. I hope this doesn't sound dumb, but Super Typhoon Haiyan set a record, I believe with satellite-estimated 195mph winds, (with 1-minute winds, JTWC-American style) and it directly affected Tacloban city, with a storm surge that came in almost as fast as a tsunami. So, yeah, I can't think of anything more devastating. according to Wikipedia: Syper Typhoon Noru--I don't believe I've ever heard of a storm that went from 50mph to 155mph in official (satellite) analysis in roughly 24 hours (correct?) I watched a 16-hour loop on Tropical Tidbits yesterday and that showed pretty much the entire development cycle.
  6. Observations now with post-tropical Hurricane Fiona
  7. peak wind gust 84 at St Paul Island
  8. Hours ago, Sydney airport had to estimate the sea-level pressure to be 949.5mb edit: also 940.0 mb (Grand Etang, on the Cape Breton penninsula)
  9. 44 knots gusting to 65 knots now at Sydney East Point (CWEP): 010 degrees, 56 knots gusting to 71 knots
  10. Sydney 967.2 mb, increased temperature to 66F (19C)
  11. oh yeah, some times I completely forget that there are two ways for me to see Canadian radar data
  12. Sable Island now back running, measures 69kt southeast wind gusts, so the lowest pressure must be close or past there
  13. first wind gusts over 50 kts in Nova Scotia
  14. Almost all stations in Nova Scotia are showing wind gusts over 30 knots
  15. Sable Island Nova Scotia has wind sensors, pressure sensors not working
  16. another storm cross section ( compare to my post from before)
  17. Now I'm starting to see much more influence of the colder air, out to the west of the hurricane, on the cross section
  18. Hurricane strength wind gusts directly measured this morning
  19. E-W cross section of Hurricane Fiona, winds (colorized), isotherms of 0C, -12C, -18C, (blue, purple) isentropic surfaces (black), The thing that looks like a hill at the middle of the picture is a little confusing. The sea-level pressures of the storm are below 1000mb, with a strong gradient down to a recon-measured 937mb, I believe. 1000mb is the bottom of the image, so it must show the 937mb pressure as a hill shape. You can see the 0C, -12C, and -18C isotherms bump up in the middle, as well as the isentropic surfaces bump down. That means that the core of the hurricane is the location where the latent heat release has warmed the atmosphere the most. And then there's the 128kt wind in the eyewall, reducing to 20kt in the eye. It does show asymmetry.
  20. There will be a combo of a monsoon moisture band and a cold front moisture band. Models and NWS-WPC agree that there could be over 2" of QPF in the form of rain (or snow) west of the Continental Divide in the next several days. Chances for rainfall over 0.4" of rain at Denver look good. Wednesday will be the day when the temperatures drop to the 50s and 60's for the cities.
  21. sort of a three-supercell complex. storms dropped 2.50" hail west of Walcott IA
  22. You can run a radar loop with this web site, even many days after the storm is done https://mrms.nssl.noaa.gov/qvs/product_viewer/
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