Jump to content
Will it snow? 7 day forecast Weather Radar Will it be cold?
Snow?
Local
Radar
Cold?

ItIsGee

Members
 View Profile  See their activity

  • Posts

    653

  • Joined

  • Last visited

 Content Type 

Posts posted by ItIsGee

    V8 Radar

    in News & Announcements

    Posted

    17 hours ago, Paul said:

    We've updated the radar with some new features today. 

    The future (predictive) radar has had a big upgrade - it now uses optical flow to predict the direction of the rainfall for improved accuracy. You can also include the predictive radar in animations by selecting it from the animations setting menu:

    predictive.png

    There is now also the option to switch on clickable map data - so clicking the map will bring up info about the precip in that location. 

    clickable.png

    And also selectable from the overlay menu is an option to view rain gauge data - switching it on will select markers for the gauges, clicking one will show the recorded rainfall. At the moment this is England only, as it's using the Environment Agency API, we'll hopefully be able to plugin Wales and Scotland soon. 

    This new version of the radar will soon become the default radar in Netweather Extra, but in the meantime you can get to it here:

    https://www.netweather.tv/extra/radar/

    Brilliant little addition!

     

    The new radar has been amazing during the stroms this summer, really good zoom and smoothing detail!

     

    Bravo NW!

    • Like 1

    Storms and convective discussion - 18th June 2020 onwards

    in Storms & Severe Weather

    Posted

    3 minutes ago, Nick F said:

    THUNDERSTORM OUTLOOK - FRIDAY 26 JUNE 2020

    stormmap_260620.thumb.png.293002639b304a6711f4c94f637cb846.png

    Issued 2020-06-26 07:19:00
    Valid: 26/06/2020 0600 - 27/06/2020 0600

    Forecast Details

    Upper trough axis to the  W and SW of Britain Friday morning will become increasingly negatively-tilted (NW-SE aligned) and sharpen as it shifts E into western Britain by late evening. Ahead of the trough, a warm/moist plume characterised by high wet bulb potential temperatures (theta-w) of 16-18C will continue to advect north across much of Britain, the plume eventually pushed away eastwards by the approaching upper trough by early Saturday.

    The high theta-w plume has destablised overnight in places with elevated thunderstorms breaking out and still ongoing this morning, particularly across Ireland and far west of mainland UK – due to strips of positive vorticity /drier air overrunning western side of plume, while a shortwave trough has brought an area of t-storms across the far SE which will clear by breakfast time.

    A very warm and moist surface airmass will reside across much of Britain, with dew points reaching 16-20C. Surface heating of this humid airmass into the high 20s or low 30s (SE England) by this afternoon capped beneath an EML (elevated mixed layer) will produce a ‘loaded gun’ pool of strong potential instability with CAPE values forecast to reach 1000-1900 j/kg this afternoon across inland Britain. Long strip/trough of positive vorticity /dry air aloft (noted on WV imagery) will continue to move E/NE across mainland UK, lift and overrunning of dry air in the mid-levels from this feature along with surface breeze convergence will likely destabilise and release the large reservoir of CAPE and support the development of scattered thunderstorms this afternoon across parts of the Midlands, NE Wales, northern England and into southern Scotland. Further south airmass likely to remain on the whole capped by the EML, but isolated t-storms can’t be ruled out.

    Given the large CAPE values forecast across much of Britain, particularly across central, northern and eastern England, isolated large hail (3-5cm diameter) is possible with stronger storms, along with frequent C-G lightning and torrential downpours with rainfall rates of 30-50mm per hour leading to localised flooding. Therefore, have issued a severe storm area covering NE Wales, Midlands and N England.

    Elsewhere, thunderstorms are likely to develop, mostly elevated, across the north of Ireland/N. Ireland, southern and western Scotland, hail (isolated 2-3cm), frequent C-G lightning and torrential rain leading to flash-flooding. Isolated elevated thunderstorms breaking out across N France/English Channel/Channel Islands, as another trough/strip of positive vorticity swings in from the SW, could clip SE England this evening.

    This evening/tonight – surface low moving in across S Ireland under base of upper trough moving in the SW/W will pull an occluded frontal zone across SW Britain, bringing showers, which could be locally heavy enough to produce isolated lightning.

    Issued by: Nick Finnis

    thunder.jpg

     

    Cameras are charged........

×
×
  • Create New...