[Storms and Convective discussion - 25th July 2021 onwards]

2 minutes ago, Mapantz said:

AOB refers to At or Below in METAR forecasts. -20°C at or below, around 5KM up.

Many thanks for that.

[Storms and Convective discussion - 25th July 2021 onwards]

What does AOB (AOB -20C at 500 hPa) in the storm forecast mean.

[Hurricane Florence]

Should have a grandstand view of Florence tomorrow from 40,000ft as I'm flying to the Dominican Republic.  Today's flights have skirted round her to the west.  Should imagine they will go round to the east of her tomorrow.

[Atlantic hurricane season/invest thread]

First daylight image of the day of TS Florence, TD9 and TS Helene.

[Wednesday evening into Thursday Storm]

Latest Hires GOES image shows the developing low off the NE coast of the States

[Storm Doris - Atlantic Storm 4]

M6 buoy to the west of Ireland is in the firing line and pressure is falling rapidly there now.

http://www.ndbc.noaa.gov/station_page.php?station=62095&unit=M&tz=STN

[Storm Doris - Atlantic Storm 4]

18 minutes ago, Jo Farrow said:

The Met Office are now mentioning the risk of Storm Force winds. The Fsxx this morning showed a more active inner cold front. Don't worry too much if you are on the edge of an Amber or YEllow warning area. This low is going to deliver very windy weather across a large part of the UK. A gust of 60mph could cause a tree to fall and disruption. The main core area which could see damaging gusts over 80mph runs from Merseyside, N.Wales through N,mids, S.Yorks across Lincs into East Anglia. It is still be analysed as a setup that could produce a sting jet over the UK, which is when the exceptionally strong winds occur. Very difficult to forecast exactly where, often closer to time a red-warning is issued, is it looks to be at mornign rush hour, not overnight. It's been windy enough for northern and eastern parts today from the low near to SCotland, hopefully people won't think Doris has already started. This does look nasty for Thursday morning, lunchtime for eastern areas. Never mind the potential snow fall S.Scotland into Norhtern England.

 

Living in the Wirral area this is not good news.  I've seen many severe NW gales over the years and the funnelling effect between the Clwyd Hills and the Pennines/Peak District as deep depressions pass to the east can give very damaging gusts through the Wirral, Merseyside and the Cheshire Gap.

[Hail on Radar]

Cheers Paul, thanks for the reply.

[Hail on Radar]

What size does hail have to be to show up on the precipitation type radar?  I've never seen hail shown on radar images even during a hailstorm that left a covering that was close on an inch in depth. 

[New - 500 Metre Rainfall Radar - First Look!]

Some of today's frames are showing the radar from yesterday.

[Could 3ft of snow ever fall to low levels (below 150m) in Britain?]

The deepest levels of undrifted snow recorded in the UK includes one very close to you Carl.
65 inches at Ruthin and 83 inches in County Durham, both in March 1947.

[Atlantic Storms February 2014]

Looks like GFS 6Z has completely binned Fri/Sat storm for the moment

06Z GFS ensembles show some very worrying charts though for Fri/Sat, especially coming so soon after Wednesday's storm

[Coldest and Snowiest winter on record (2013/2014)]

I want to see the prolonged cold of 1962/3 combined with the massive snowfalls of 1946/47.

I was only 13 years of age then and even I, as a snow and cold lover, got fed up with it.  No central heating, outside loo frozen numerous times, side roads like skating rinks for 3 months.  Not sure we would cope if we had another prolonged winter like that, the strain on energy supplies and the transport system would be far greater now.  Anyway back to March 2013 here is a selection of pics taken around Eryrys in North Wales on 24th March.  It's about 350m ASL.

Have included a Google Earth image of Eryrys without the snow. Enjoy  

[Model Output Discussion 5/12/2012 18Z onwards - the one after THAT ECM]

I would urge caution for tonight, a signifficant number of the GFS ensembles erode high pressure from the south around day 10 which usher in milder uppers. About 3 or 4 members show a clean evolution from an easterly to a Greenland high and NE'ly winds.....this is the scenario you want to see gain support if you're a cold lover.

Very cold air is building to the north at the end of that run and advancing south and as you say this could end up with a classic battle ground scenario across the UK

[Radar V6 Issues]

Hi Paul, any chance of putting a slight delay at the end of the animation

[Radar V5 New Version Online]

Yep, another beta not too far off.

Have new additional colours been added to the NW new scale Paul?

When will the new beta be out.

Regards,

Rob