Hermine brings life-threatening flooding to central Texas

By: Dr. Rob Carver, 9:03 AM GMT on September 08, 2010

The remnants of Tropical Storm Hermine are producing significant amounts of rain, causing dangerous flooding in central Texas. As of 300 AM CDT, radar data (Fig. 1) estimates that over 15 inches of rain as fallen over Travis and Williamson county. This is a result of storms from Hermine passing over the same area, this is known as training. Fig. 1 Storm-total precipitation from the New Braunfels NEXRAD at 300AM. To make matters worse, the rain is falling directl...

Late Night Thoughts on Earl and Fiona

By: Dr. Rob Carver, 9:28 AM GMT on August 31, 2010

I'm going on evening blog duty Tuesday night to help Jeff M. with Earl as he makes his approach towards the East Coast. For me at least, it's really hard to discuss a meteorological situation cold. I need to develop situational awareness and get a feel for how the models are doing. So, time to practice. EarlSo far, Earl's behaving like your arch-typical Cape Verde hurricane. He's big, strong (Cat 4), and headed for the US after doing some damage to the Caribbea...

The Great Russian Heat Wave of July 2010

By: Dr. Rob Carver, 10:53 PM GMT on August 05, 2010

The July 2010 heat wave for western Russia, including Moscow, is one of the most impressive heat waves I've ever seen. I thought it would be instructive to look at the meterological conditions to understand what creates heat waves and droughts. Fig. 1 Meteorological history of July 2010 for Sheremetyevo International Airport, Moscow, Russia. Theory of Drought The most immediate cause for drought/heat waves are upper-le...

Updated: 5:13 PM GMT on March 13, 2012

Severe Weather in the Northern Plains

By: Dr. Rob Carver, 6:30 AM GMT on June 19, 2010

There's been notable severe weather in the northern Plains and Midwest over the past two days. I'll start by discussing the severe storms that went through the Midwest.June 18As of 930 PM PDT, there were 2 tornado reports, 51 hail reports, and 317 reports of damaging straight-line winds. The strongest wind report I saw was 90 mph at La Porte, Indiana, and the airport weather station at Haines, MI reported a wind gust of 79 mph. Here is a plot of the storm reports...

Tornadoes in northern Oklahoma, May 19, 2010

By: Dr. Rob Carver, 9:41 AM GMT on May 20, 2010

It was a busy day for the Storm Prediction Center and NWS Forecast offices in Texas and Oklahoma on May 19. There were 25 tornado reports, 8 reports of damaging winds, and 23 hail reports (The largest reported was 3.25 inches). Preliminary news reports suggest there was one injury associated with the severe weather when a tractor-trailer rig was blown over by winds. Of the NWS offices responsible for Oklahoma, Norman issued 24 tornado warnings, Amarillo 16, and T...

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About rcarver

Rob is the Research and Development Scientist for Weather Underground. He has a Ph.D. in meteorology from Penn State University.

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