On the morning of 12 May, while discussing the previous day's forecast at the CI desk, we noticed some interesting westward-propagating wave-like features in the observed GOES-13 data over southern Texas. The waves appeared to originate from an MCS in southeast Texas. We then viewed the simulated 6.95 micrometer band from the 11 May model run, and were interested to see that the 30-36 hour forecast also showed similar waves propagating westward. The images above show the simulated and observed WV band at 0600 UTC on 12 May, but the waves are difficult to locate without viewing an entire loop. A few hours later, a storm initiates (in both the observed and the simulated imagery) along the Rio Grande River and might be related to the westward-moving feature. A more thorough analysis of this case is needed.
Thursday, May 12, 2011
Gravity Waves in the Simulated Water Vapor Imagery
On the morning of 12 May, while discussing the previous day's forecast at the CI desk, we noticed some interesting westward-propagating wave-like features in the observed GOES-13 data over southern Texas. The waves appeared to originate from an MCS in southeast Texas. We then viewed the simulated 6.95 micrometer band from the 11 May model run, and were interested to see that the 30-36 hour forecast also showed similar waves propagating westward. The images above show the simulated and observed WV band at 0600 UTC on 12 May, but the waves are difficult to locate without viewing an entire loop. A few hours later, a storm initiates (in both the observed and the simulated imagery) along the Rio Grande River and might be related to the westward-moving feature. A more thorough analysis of this case is needed.
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