Author Archives: Jonathan Blaes @ WFO RAH

Increasing Threat for HSLC Severe Weather on Tuesday Morning across Portions of Virginia and North Carolina

Posted on January 23, 2018 by Jonathan Blaes @ WFO RAH

A quick look at some of the forecast products on the NC State HLSC web page suggests an increasing threat for severe weather on Tuesday morning. While the overall thermodynamic environment appears marginal, recent forecast trends suggest boundary layer moisture and … Continue reading →

Posted in Uncategorized | Leave a comment

Winter 2017 Mid-Atlantic and Southeast Sub-regional SOO and Northwest Flow Project Virtual Workshop

Posted on December 16, 2017 by Jonathan Blaes @ WFO RAH

On December 13, a winter weather oriented sub-regional SOO and Northwest Flow Project virtual workshop was held. The workshop was organized following the Spring 2017 CSTAR Workshop and Mid-Atlantic and Southeast Sub-regional SOO meeting held in Raleigh where participants suggested … Continue reading →

Posted in Uncategorized | Leave a comment

Collaborative Effort to Account for the Impact of the August 21st Solar Eclipse on Operational Forecasts in the Mid Atlantic and Southeast

Posted on August 18, 2017 by Jonathan Blaes @ WFO RAH

Meteorologists recognize that solar eclipses in the past have had a notable impact on the sensible weather in the regions in which they occur. These impacts can include a decrease in surface temperature, reduction and changes to surface winds, lowering … Continue reading →

Posted in CIMMSE, NWP | Leave a comment

The Utility of Non-NWS Upper Air Observations – NC State Soundings Support Severe Weather Operations at NWS Raleigh on May 4th and 5th, 2017

Posted on May 8, 2017 by Jonathan Blaes @ WFO RAH

There are several non-NWS organizations that take upper-air observations and share them with NWS forecasters. These organizations largely consist of universities, military installations or research laboratories. The motivation for taking these observations include research efforts as well as educational and … Continue reading →

Posted in CSTAR, Winter Weather | Leave a comment

2017 CSTAR Workshop and Mid-Atlantic and Southeast Sub-regional SOO Meeting Held in Raleigh

Posted on May 1, 2017 by Jonathan Blaes @ WFO RAH

On April 26th through 28th over 20 meteorologists from the National Weather Service (NWS) as well as faculty and students from N.C. State University (NCSU) gathered in Raleigh to get updates on various collaborative research activities, share operational and training … Continue reading →

Posted in CIMMSE, CSTAR | Leave a comment

Hurricane Matthew Gust Factors

Posted on April 12, 2017 by Jonathan Blaes @ WFO RAH

To evaluate the performance of CSTAR related research to operations activities, the sustained winds, wind gusts, and gust factors for Hurricane Matthew (2016) were examined across coastal and eastern Georgia, South Carolina, North Carolina, and Virginia. The image above or … Continue reading →

Posted in CSTAR, TC Inland and Marine Winds, Uncategorized | Leave a comment

Precipitation Pattern across the North Carolina during Hurricane Matthew – Part 2 of 2: Classic Pattern for Enhanced Tropical Cyclone Rainfall across the Carolinas during Matthew

Posted on November 8, 2016 by Jonathan Blaes @ WFO RAH

Hurricane Matthew dumped a swath of 8 to 18 inches of rain across inland portions of eastern North Carolina during the period of 07 October through 09 October 2016. Several locations reported incredible rain amounts including 18.38 inches in Elizabethtown … Continue reading →

Posted in CIMMSE, Hydrology, TC and Boundary QPF | 1 Comment

Precipitation Pattern across the North Carolina during Hurricane Matthew – Part 1 of 2: Left of Track Precipitation Distribution

Posted on November 7, 2016 by Jonathan Blaes @ WFO RAH

Hurricane Matthew dumped a swath of 8 to 18 inches of rain across inland portions of eastern North Carolina during the period of 07 October through 09 October 2016. Several locations reported incredible rain amounts including 18.38 inches in Elizabethtown … Continue reading →

Posted in CIMMSE, Hydrology | Leave a comment

Tropical Storm Hermine Follow Up with Lessons Learned, Wind Gusts and Gust Factors

Posted on October 4, 2016 by Jonathan Blaes @ WFO RAH

To evaluate the performance of CSTAR related research to operations activities, members of the CSTAR Tropical Cyclone (TC) wind team recently discussed experiences with Tropical Storm Hermine (September 2016).  In addition, the sustained winds, wind gusts, and gust factors for … Continue reading →

Posted in CSTAR, TC Inland and Marine Winds, Uncategorized | Leave a comment

Forecasts of Winds and Wind Gusts Associated with Tropical Cyclone Hermine Using CSTAR Research

Posted on September 2, 2016 by Jonathan Blaes @ WFO RAH

The approach of Tropical Cyclone (TC) Hermine provides WFOs in the Carolinas and Virginia with another opportunity to use and evaluate a technique to forecast tropical cyclone winds and wind gusts. A Collaborative Science, Technology, and Applied Research (CSTAR) project … Continue reading →

Posted in CSTAR, TC Inland and Marine Winds, Uncategorized | Leave a comment