Storm Highway by Dan Robinson
Weather, photography and the open roadClick for an important message
Home | Blog Index | Blog Archives | Christianity & Faith Essays

                   Thursday, April 29, 2010 - 6:30PM CDT

Friday 4/30 Midwest expedition day updates

By DAN ROBINSON
Editor/Photographer
25 Years of Storm Observing
Important Message
Dan's RSS/XML feed
Dan's YouTube Video Channel

Update 7:30AM Friday, (Posted via Office from New Baden, IL):
The latest short-term RUC model has storms breaking out early, with a CAPE max and coincident convection around St. Louis/southern IL by evening. This corresponds well with what other models were hinting at last night. If this holds true, storms in this area will be farther removed from the strongest upper support - but even so, they will still be in a region of 40-50 knots of flow at 500mb - more than sufficient. 850s are veered areawide, but the surface should be ranging from due south to slightly backed, enough to provide low-level shear for supercells.

So pending further data, target is right here at home.

*       *       *       *       *

Update 12:17AM Friday, (Posted via Office from New Baden, IL):
The 00z models (NAM, GFS, 4KM WRF) don't paint a terribly clear picture of what to expect tomorrow. It's clear that a northern bias will be needed due to fast NE storm motions. A starting point in southern Iowa early in the day may be in the cards - but this will again be a day where morning data will play an important role in positioning.

*       *       *       *       *

Update 6:30PM Thursday, (Posted via Office from New Baden, IL):
Shifting out of Plains chase mode for a while, as two or three days of observing close to home around the lower Midwest look to be shaping up starting tomorrow in central Missouri/Iowa. The threat moves into southeast Missouri/southern Illinois on Saturday, then possibly back into the St. Louis area one or two days thereafter as 'cold core' setups. Each day should be close enough to start and end the expeditions here at home.

I'm not ready to choose a target for Friday just yet, as the details are still yet to be worked out. I might have some better ideas later tonight after the 00z model runs.

*       *       *       *       *

Post a Comment
Please note that IP addresses are logged. Abuse will be reported to ISPs or corporate network management

The following comments were posted before this site switched to a new comment system on August 27, 2016:

25 Years of Storm Observing
Important Message
Dan's RSS/XML feed
Dan's YouTube Video Channel

This web site is made possible by support from CIS Internet.
CIS Results-Oriented Internet Marketing

GO: Home | Weather Observing | Photography | Extreme Weather Library | Stock Footage | Blog

Featured Weather Library Article:

Lightning and trees
Trees are nature's lightning rod - take a closer look here.
More Library Articles

All content © Dan Robinson. All usage requires a paid license - please contact Dan for inquiries.

Web Site Design and Internet Marketing by CIS Internet