Handry Outlook- UK Weather Forecast

RadarLoop UK has just been updated to include: - Better Radar oading algorithm🗺️ - Better Thunderstorms Nowcasting algorithm🌩️ - New Satellite Imagery layer 🛰️ - New Isobar layer🌀 - New Wind Direction layer🌬️ ... and so much more for you to discover!!! handry-outlook.github.io/RadarLoop/UK.h…

@UKWX_ Can confirm this is accurate

PETRICHOR SMELL INDEX OUTLOOK VALID: Today, 1st April [UPDATE 1] Good morning, scent seekers! Today’s Petrichor Smell Index is delivering some truly outstanding conditions across the British Isles, thanks to just the right mix of soil moisture, boundary layer humidity, and convective initiation signals. That unmistakable earthy rain-on-dry-ground aroma is set to be strong in many places which is perfect timing for a serious outdoor sniff! England is the clear winner today, with widespread high to severe petrichor levels (7-10) across the south, central regions and much of the north. London in particular is looking like the hot spot for that smell! Scotland is looking more restrained apart from Aberdeen, while Ireland shows a classic west-east divide. Overall confidence in the forecast is high (we're talking proper dog like air-sniffing levels in the right spots).

Yesterday's HOCO verification on handry-outlook.github.io/HOCO-V2.0/inde…

Hail and graupel showers with the occasional thunder are possible across parts of England and Wales on Tuesday and Wednesday. Here are the latest HOCO runs: handry-outlook.github.io/HOCO-V2.0/inde…

An update to the HOCO graphics on handry-outlook.github.io/HOCO-V2.0/inde… is avaliable now while the AUTO HOCO run will be fixed later tonight

The lightning activity index (or LAI) is a new addition to the thunderstorm outlooks, and the LAI in forecasts will be derived from the LAI.v1 model composing of ECMWF, GFS, ICON and UKV outputs. The model produces a dynamic run-by-run 48 hour forecast in 3-hour intervals, plus a 24-hour forecast composing all four, 0, 6, 12, 18z forecasts. Additionally on the homepage you can view the LAI forecast for today and tomorrow. The LAI forecast will be kept to T+48 hours due to the data loads. I'm hoping to see how it verifies in future thunderstorm risks and potentially alter the calculation of the LAI a tad for better verification in the future, but thus far it looks quite OK even when only very isolated strikes are possible (LAI 0.5-1).

Past 24 hours radar imagery on RadarLoop: handry-outlook.github.io/RadarLoop/UK.h…

Tomorrow's HOCO is still suggesting a risk of isolated thunderstorms across parts of eastern England handry-outlook.github.io/HOCO-V2.0/inde…

HOCO V2.0 suggests a risk of thunderstorms across London on Monday afternoon. handry-outlook.github.io/HOCO-V2.0/inde…

@BritishIslesMet Not much tbh, hoco 2.0 is ran on cloud instead of locally

@Handry_Outlook How much RAM, or other pc specifications do you think are needed to automate your own forecasts, based on high res models?

THE WAIT IS OVER. 🛰️ HOCO 2.0 is now avaliable . - New Ensemble Engine - Multi-Map Comparison Layouts - Custom Scenario Builder Check it out now: handry-outlook.github.io/HOCO-V2.0/inde…

@MetJam_ Yep

@Handry_Outlook 6th July? Fairly certain I see an 06 in the pic

HOCO V2 alpha registration is now OPEN! 🚀 Secure your spot for early access later this month. All accounts will be reviewed, and selected testers will be notified soon. Register here: handry-outlook.github.io/HOCO-V2.0/inde…

@MetJam_ Close, but not really... This is for 13th June :

@Handry_Outlook 13th June

@MetJam_ Guess the date (2025)

@Handry_Outlook Herne Bay masterclass on picture 2

@ThermoConveyor Check DM

@Handry_Outlook Lightning data source? Atd.net, blitzortung or other?

Coming this month👀👀👀

The HOCO API is currently working and is expected to be publicly available before April

HOCO thunderstorm forecast is getting an upgrade before April HOCO: Run automatically every 3 hours ADV-HOCO: No consistent runtime, will be triggered and modified manually before issued Both products will have a 0-72 hours time range These will be integrated into RadarLoop

An update on improving the lightning nowcast algorithm and UI is now available on RadarLoop. *Screenshot below shows how the nowcast algorithm performs in a thunderstorm outbreak during 06 July, 2025 handry-outlook.github.io/RadarLoop/UK.h…

Heavy showers and isolated thunderstorms are developing across parts of Ireland and Northern Ireland. handry-outlook.github.io/RadarLoop/UK.h…