Category Archives: TC and Boundary QPF

Posts in this section relate to research coordinated by Brian Etherton on QPF and ensemble prediction of landfalling TCs.

Cold Air Damming and Tropical Cyclones – How often do they occur together?

Posted on May 7, 2013 by

When we started the Tropical Cyclone, Boundary Interaction and QPF project, it was known that cold air damming (CAD) can occur during the passage of tropical cyclone and can have an impact on rainfall distribution by enhancing mesoscale lift.  What … Continue reading →

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Eastern Region Virtual Workshop Presentation by Jordan Dale

Posted on March 14, 2013 by

NWS Eastern Region recently held a virtual conference to provide employees with an opportunity to showcase research and activities they have participated in.  As a participant in the CSTAR Tropical Cyclone QPF and Boundary Interaction project,  NC State student Jordan … Continue reading →

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2012 CSTAR Virtual Workshop

Posted on November 26, 2012 by

On 16 November 2012, a total of 45 meteorologists from the National Weather Service (NWS) as well as faculty and students from NC State University (NCSU) gathered via a virtual workshop to continue implementation of an ongoing Collaborative Science, Technology, … Continue reading →

Posted in CSTAR, General Information, High Shear Low Cape Severe Wx, TC and Boundary QPF, TC Improved Initial Conditions, TC Inland Winds | Leave a comment

Notes from the 10/3 CSTAR TC QPF conference call

Posted on October 15, 2012 by

6 participants Barrett Smith (RAH) Gary Lackmann (RAH) Jordan Dale (NCSU) Jim Hudgins (RNK) Jonathan Blaes (RAH) Eric Seymour (AKQ) Most of the call covered the following topics:  Jordan has run numerous WRF simulations with different initialization data and start … Continue reading →

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Notes from 7/11/2012 CSTAR TC Boundary/QPF conference call

Posted on July 31, 2012 by

Jordan Dale shared his initial findings from two WRF simulations of TC Ernesto initialized at 06Z and 12Z 8/30/06 using 1̊ resolution GFS forecast data. The 12Z simulation was run on a 36-km grid with nested 12 and 4-km domains. … Continue reading →

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Notes from CSTAR QPF group call – June 13, 2012

Posted on June 15, 2012 by

Notes from 6/13/2012 CSTAR TC Boundary/QPF conference call 6 participants Barrett Smith (RAH) Gary Lackmann (NCSU) Jordan Dale (NCSU) Frank Alsheimer (CHS) Jonathan Blaes (RAH) Jim Hudgins (RNK) Notes: Jordan Dale presented his most recent analysis of TS Ernesto.  20km … Continue reading →

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Follow up to TD Beryl

Posted on June 12, 2012 by

As a follow up to Jordan’s event summary for TD Beryl (http://cimmse.wordpress.com/2012/06/05/td-beryl-event-summary/), here is a radar loop from KRAX showing the interaction of TD Beryl with convective outflow from storms over western Virginia on the evening of May 29th (Fig. … Continue reading →

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TD Beryl Event Summary

Posted on June 5, 2012 by

Beryl originated as a tropical disturbance in the Caribbean which tracked northeastward off the Southeast US coast on May 25 (Fig. 1). The system was initially classified a subtropical storm on 00Z May 26 as its motion became west-southwesterly along … Continue reading →

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Boundary impacts with TD Beryl

Posted on May 29, 2012 by

Tropical Depression Beryl is beginning to move northeast out of Georgia today, and is forecast to track across eastern SC toward the NC coast tonight and Wednesday.  A cold front and a line of prefrontal convection are currently approaching the … Continue reading →

Posted in TC and Boundary QPF | 2 Comments

TC Boundary/QPF Hurricane Ernesto Case Study Update

Posted on May 9, 2012 by

Manual surface analyses of pressure and temperature have been completed every six hours from 0000Z 8/31 to 2300Z 9/01 using METAR observations from SC, NC, VA, and (a few) offshore. These analyses were then compared to MSAS 2-D surface frontogenesis … Continue reading →

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