Racecast Weather - Your Source for Race Weather Information
  • Racecasts
  • Radar
  • 2021 Schedule
  • Links
  • Bios
  • Contact

Wednesday update for the ABC Supply 500

8/14/2019

Comments

 
By: Stephen McCoy
Picture
The updated forecast for the ABC Supply 500 remains mostly consistent with the initial forecast, though with some warmer temperatures both days and a slight increase in precipitation chances on Saturday.

The atmospheric set-up for Saturday is similar to the previous forecast, with winds from the south to southeast now throughout the day, which will result in warmer air temperatures. Dew point temperatures are also anticipated to be warmer: mid-60's during the morning increasing to the upper 60's to low 70's in the afternoon. The low levels aren't anticipated to be as saturated as in the previous forecast, however with warmer temperatures, the chances for convective precipitation have increased. Mixed-layer CAPE values indicated by the GFS are now upwards of 1000 J/kg for Saturday. The NAM shows MLCAPE values well under what the GFS is predicting, though surface CAPE values are similar. Regardless, conditions will be similar to those seen today: hit-or-miss showers with a few thunderstorms possible. The models seem to indicate two standout times for precipitation: mid-morning and late afternoon. Impacts remain low as the uncertainty of where/when rainfall occurs is still high, however if showers do occur they will likely stop any on-track sessions. Much like in the previous forecast, fog is possible during the morning.

Sunday's set-up has changed since Monday, as the aforementioned surface low pressure system is now expected to weaken as it approaches Quebec. However a high pressure system sitting over the central Atlantic will cause winds from the south to southwest, resulting in warmer air temperatures for the day; dew point temperatures near 70F will continue from Saturday. Precipitation chances remain the same, though showers and/or storms will be initiated by convection as opposed to the cold front mentioned in the initial forecast. CAPE values are expected to be higher than those for Saturday and may lead to stronger storms. Impacts remain the same due to the models suggesting the highest chance for precipitation being in the early to mid afternoon. Should rainfall occur on Saturday, fog may be possible again on Sunday morning.
Comments

    Social Feeds


    Instagram

    Instagram

    Partners

    Picture
    Picture
    Picture
    Picture
    Picture
    Picture

    Authors

    Doug Schneider, Scott Martin, and Stephen McCoy are race fans and meteorologists dedicated to providing accurate forecasts and timely weather updates at racing venues around the world. We forecast for IndyCar, Indy Lights, Pro Mazda, USF2000, IMSA, Blancpain World Challenge America, and World Endurance Championship, as well as major SCCA and NASA events.


    Categories

    All
    F1
    IGTC
    IMSA
    Indycar
    Le Mans
    MRTI
    NASA
    Outlooks
    Photos
    PWC
    Racecasts
    SCCA
    Trans Am
    TUSC
    Verification
    Weather Education
    WEC


    Archives

    December 2020
    November 2020
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    March 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014



Powered by Create your own unique website with customizable templates.