8/18-19/07 DISC: OK (Erin)

[Lance Maxwell]

Does anybody have a link of a level 2 or 3 loop starting at about midnight?

 

[Wesley Luginbyhl]

08/19/2007 REPORTS: OK

I woke up this mourning to a flooded apartment and some good size tree limbs down. After looking at all the large tree limbs down around my apartment complex and then seeing the lack of tree limbs down through the rest of Norman, I am thinking a small tornado may have hit my complex. What ever hit here had some punch to it. Too bad I slept through it. I had to walk out in that water in the first pic below to get the drain unclogged, because it was threatening to flood my apartment again. First 4 pics are from right around my complex, and the 5th is from 3 blocks north of my apartment.

 

[Jack Beven]

Jeff and all,

I'd like to repeat the request that I made in the Weather and Chasing section here. If anyone has personal weather station data on Erin over Oklahoma here that you are willing to share, could you please contact me at [email protected]? It will be a big help in our post-analysis of Erin.

Jack Beven
National Hurricane Center

I've uploaded some radar and sat images at http://www.tornadocentral.com/now/Erin/

Saved IR image at http://www.tornadocentral.com/now/Erin/erin_over_OK_ir.jpg

I NEVER thought I'd see an eye of a tropical cyclone near OKC!

EDIT: It looks like we'll get a good sample of the central pressure associated with Erin in the next hour as the eye passes over KPWA in northwestern Oklahoma City. Actually, as I type this, the center is sitting over Piedmont. Rocky -- anything interesting? Are the skies clear? Can you see a stadium effect? LOL I kid, of course. It'd be cool to be in the eye for those who never thought they'd see the eye of a tropical cyclone in Oklahoma City! KPWA is just getting into the eye, and the latest pressure reading had 29.70" Hg. I'd expect the min pressure to be ~29.67", though I'm crossing my fingers that they do a SPECI ob since the eye may be beyond the site by the 1252z ob time.

As expected, KOKC reporting a local minimum in precip, at 3.25" in the 6-12z period. Compare this to 4.86" in Minco, 7.05" in El Reno, 4.08" in Norman, 3.91" in western Oklahoma City, and ~5" at a couple of the KOCO's "neighborhood network" stations in OKC (Oklahoma City Community College in SW OKC, Crossroads Mall in SE OKC, Quail Springs Mall in NW OKC, Mathis Brothers at I40 and I44, etc). I figure that if it's going to be super wet this year, we might as well try to break the annual precip record. As such, it's kind of disappointing that the official ob site is the lowest among those in the immediate area. We'll probably end up at 4" at OKC when all is said and done (4" from 6z onward). I'm not sure why KOKC (Will Rogers airport) is a good 1.75" lower than other nearby stations... Oh well. Flooding is severe enough right now (media report from El Reno Fire chief of 10 feet of water over I40 in El Reno).

EDIT: Wow, good guess on min pressure. KPWA did a SPECI report and measured 29.67 inHg as the eye passed just to the north of that airport. OKCN mesonet site (Oklahoma City North) should also sample the eye, probably a little closer to the center too. For meteograms, go to http://www.mesonet.org/public/meteograms.html and click on "Choose From Map" on the left menu (or scroll for the station). Pressure at that station has dropped ~3mb in the past hour.

 

[jladue]

Jeff and all,

I'd like to repeat the request that I made in the Weather and Chasing section here. If anyone has personal weather station data on Erin over Oklahoma here that you are willing to share, could you please contact me at [email protected]? It will be a big help in our post-analysis of Erin.

Jack Beven
National Hurricane Center

Jack, Did you capture any meteograms from the OK mesonet? Here is one from Watonga, El Reno, and Ft. Cobb

regards,

Jim