Storm Review

Aug 082013
 

Roaring River Gage Reading at 5:30 a.m.

Roaring River Gage Reading at 5:30 a.m.

The area of heavy flooding rain has shifted south as of the early hours of this Thursday morning.

Flash flood emergencies are in effect for Hollister, Roaring River State Park and other areas of McDonald, Barry and southern Stone Counties. Additional flash flood concerns exists in portions of northern Arkansas including Boone and Carroll Counties.

Just over 6.5″ of rain has been logged at the Branson Airport overnight (still raining).  Much of this fell in a two hour period.  This rush of water flowed north along Turkey Creek into Hollister. The water rose rapidly there, several RV’s were reportedly washed away and the situation is still unfolding.

Meanwhile, the river gage on the Roaring River in the park of the same name in Barry County swelled to 8.31 feet as of 5:30 a,m. and is guaranteed to rise much more as another round of very heavy rain is about to impact that area as of this writing (6:30 am).

Radar and Flash Flood Warnings at 6:30 a.m.

Radar and Flash Flood Warnings at 6:30 a.m.

The heavy rain will continue all day!  Please stay safe. I’ll have more timely updates on Twitter and Facebook throughout the day.

 

Improbable Twister

 Posted by at 9:48 pm on July 21, 2013  Storm Review  No Responses »
Jul 212013
 

Taken from Video Posted on Dan Difranco's Facebook Page

Taken from Video Posted on Dan Difranco’s Facebook Page

Much to the surprise of *everyone*, a small tornado touched down in Springfield this Sunday evening, July 21st!

I first noticed a storm report of wind damage plot on my radar software earlier this evening. The National Weather Service said they would investigate.

Turns out that the damage had a track.  This was verified by video posted on Dan Difranco’s Facebook Page, showing a condensation funnel.

Here’s a link to that video:

https://www.facebook.com/dan.difranco.3/media_set?set=vb.511714911&type=2

Here’s another showing a lowering (trees block lowest portion) on the Instagram page of Joshackworth:

http://instagram.com/p/cDGxZOTKnS/

Estimated Tornado Track From Sunday, July 21st, 2013

Estimated Tornado Track From Sunday, July 21st, 2013

Here’ s the report from the Springfield National Weather Service:

“NWS storm survey indicated that an EF-0 tornado touched down near the intersection of east Cairo Street and south Pickwick Avenue. the tornado traveled east along east  Cairo street and lifted at the intersection of east Cairo street and Glenstone Avenue. Estimated wind speeds with this tornado were around 60 mph. this tornado damaged multiple trees and caused minor damage to roofs.”

Susan Jurgensmeyer, who lives 2 blocks east of Glenstone and Cairo describes it: “I heard the wind, the walnut tree in the neighbors yard was really swaying, and the wind sounded really loud and just came on real fast. It was over in a few seconds, it seemed like.”

This tornado was undetectable on radar.  It  occurred under the updraft of a developing storm.  Radar shows no evidence of rotation that can be distinguished from “background noise”   The echo itself does have a sort of broad “hook” on it which is visible post-storm but would have defied detection in real-time.

Hires radar at About the Time of the Twister

Hires radar at About the Time of the Twister

Here’s my radar review. I’ll have more detail on Monday when I receive the high-resolution data:

 

 

Jun 162013
 
The Extreme Rain in South Springfield, June 15th, 2013

A very small area of southern Springfield received 9″+ of rain in only a few hours during the late morning hours of Saturday, June 15, 2013. This caused extreme flash flooding. The rain storm caused the Springfield National Weather Service office to issue its first Flash Flood Emergency for the city. This is a special […]

Jun 042013
 
The Various Shades of Severe Storm Field Observation (Storm Chasers!)

Tornado intercepting, media reporting, storm gawking, storm chasing, storm tours, storm research and storm spotting ; all of these activities involve being in the field or on the road and close to severe thunderstorms and tornadoes.  But what are the differences?  And what is considered “close”? Let me start with storm spotting. Storm spotters form the backbone of […]

Jun 022013
 
Storm Chase Review, Oklahoma, May 31st, 2013, Part One

My guests on this chase tour were Bryan Snider from Phoenix, AZ  and Jeff Bowers from Springfield.  Jeff and I left Springfield around 9 a.m.  Bryan flew into Tulsa the day before and we picked him up along the way.  My thanks to both of them for the support, documentation and navigation help during this […]

Texas Tornadoes of May 15, 2013

 Posted by at 3:50 pm on May 16, 2013  Storm Review  No Responses »
May 162013
 
Texas Tornadoes of May 15, 2013

We are all hearing about the devastation which occurred last night in northern Texas as several supercell thunderstorms produced multiple tornadoes. At last count, six people have been killed. The communities of Granbury and Cleburne were particularly hard hit. The Granbury-Cleburne storm was tracking to the southeast.  A thunderstorm in general will move along a path […]