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Casper ter Kuile

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Shelf clouds near Grand Island, Nebraska

Casper and Roy stormchasing USA - day 13: Thursday 29 may 2008

  1. from Independence, Topeka (Kansas) to Nebraska City, Lincoln, York, Aurora, Grand Island, Hastings (Nebraska)
  2. Our route from Independence (Kansas) to Grand Island (Nebraska)
  3. Images of our very succesfull stormchase near York > Grand Island > Hastings (all along Interstate 80)
  4. SPC Convective Outlook for 29 may 2008
  5. Location of the jet on 30 may 2008 at 00:00 UTC
  6. MSL Pressure and Surface Wind on 30 may 2008 at 00:00 UTC
  7. Surface Moisture and Mixing Ratio on 29 may 2008 at 21:00 UTC
  8. Surface Map on 30 may 2008 at 00:00 UTC
  9. GOES Visible image on 29 may 2008 at 20:32 UTC
  10. NWS Composite Reflectivity on 29 may 2008 at 23:40 UTC
  11. SPC Storm Reports of 29 may 2008
  12. Archive of the Severe Thunderstorm Event: May 29, 2008

Stormchase including wallcloud and mammatus near York, Grand Island and Hastings along Interstate 80 (Nebraska)

Today is een big chaseday! SPC Convective Outlook forecast a HIGH probability of severe weather in eastern Nebraska and western Iowa. Yesterday we decided to move to the north knowing we had to go as far as Nebraska. Tomorrow we have to return to Oklahoma to be in time to catch our plane to Chicago.
So we are now in Independence in the very south-eastern corner of Kansas and have to drive a big distance. Roy and I decide to start very early, that is getting up at 06:00, do our homework: investigating the situation. This homework starts at the SPC Outlook but we never stick with that. We always perform our own research based on models and on actual weatherdata such as the surfacemap. Most of the time Roy and I are in fairly good agreement and we both are quite happy with this.
As said: driving in the US is very comfortable, one knows fairly well when to arrive at a certain location. This is contrary with the Netherlands where we nearly always are plaqued by traffic jams... Around 15 o'clock we are near York along the Interstate 80 in Nebraska and sky is starting to change appearance... The first mammatus appear which is a sign for an anvil comming our way!
We move further to Grand Island where we have an intersection with highway 34. This is a strategic location because tornado's have to pass the 34 from the south-west to the north-east and the only thing we have to do is beiing at the correct location and time along this highway 34! When things turn out to become very bad and dangerous there is always an escape route along Interstate 80. So we move from a location north of Interstate 80 slowly to other locations south of Interstate 80. Here one recognises the advantages of the US roadsystem. One half of the roads is from west to east, the other half is from north to south. To chase after tornado's one should not use the Interstate as it is not possible to easily turn around, it is primarily used to move fast to the east or west or used as an escape route.
Super 8, Grand Island, NebraskaEl-Tapatio Mexican Restaurant, Grand Island, Nebraska

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View Larger Map


Map: from Independence, Topeka (Kansas) to Nebraska City, Lincoln, York, Aurora, Grand Island, Hastings (Nebraska)

Route from Independence, Topeka (Kansas) to Nebraska City, Lincoln, York, Aurora, Grand Island, Hastings (Nebraska)


Location of the jet on 30 may 2008 at 00:00 UTC

Location of the jet on 30 may 2008 at 00:00 UTC


MSL Pressure and Surface Wind on 30 may 2008 at 00:00 UTC

MSL Pressure and Surface Wind on 30 may 2008 at 00:00 UTC


Surface Moisture and Mixing Ratio on 29 may 2008 at 21:00 UTC

Surface Moisture and Mixing Ratio on 29 may 2008 at 21:00 UTC


Surface Map on 30 may 2008 at 00:00 UTC

Surface Map on 30 may 2008 at 00:00 UTC


GOES Visible image on 29 may 2008 at 20:32 UTC

GOES Visible image on 29 may 2008 at 20:32 UTC


NWS Composite Reflectivity on 29 may 2008 at 23:40 UTC

NWS Composite Reflectivity on 29 may 2008 at 23:40 UTC


This site is under heavy construction... please have some patience... thank you!

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