Having stated nan yesterdays Look Ahead video that I thought that the hurricane down in the Atlantic will be setting the scene for autumn, we should review the analogues in more detail. Below is September. Notice the lower heights focused to the west of Ireland and the higher heights over southern
Month Ahead & Seasonal
September 2021 – Preliminary Guidance
+++ THIS FORECAST IS FOR PRIVATE CLIENTS ONLY AND MAY NOT BE DISTRIBUTED OR COPIED IN ANY WAY WITHOUT PRIOR PERMISSION. +++ SEPTEMBER 2021 - PRELIMINARY GUIDANCE =========================== Issued: Wednesday 18th August 2021 Contact: simon@weatherweb.net HEADLINES ========== + Unsettled early + Windy and wet for a time + Drier and warmer later FACTORS AFFECTING SEPTEMBER 2021 PRELIMINARY GUIDANCE ===================================================== + High pressure
August 2021 – Weather Guidance
+++ THIS FORECAST IS FOR PRIVATE CLIENTS ONLY AND MAY NOT BE DISTRIBUTED OR COPIED IN ANY WAY WITHOUT PRIOR PERMISSION. +++ AUGUST 2021 - FINAL GUIDANCE =========================== Issued: Saturday 31st July 2021 Contact: simon@weatherweb.net HEADLINES ========== + Improving after mid-month + Unsettled start + Chance of brief hot spell end FACTORS AFFECTING AUGUST 2021 FINAL GUIDANCE ============================================== + Jet stream develops
August 2021 – Preliminary Guidance
+++ THIS FORECAST IS FOR PRIVATE CLIENTS ONLY AND MAY NOT BE DISTRIBUTED OR COPIED IN ANY WAY WITHOUT PRIOR PERMISSION. +++ AUGUST 2021 - PRELIMINARY GUIDANCE ================================== Issued: Wednesday 21st July 2021 Contact: simon@weatherweb.net HEADLINES ========== + Better second half + Unsettled start start + May be warmer end FACTORS AFFECTING AUGUST 2021 PRELIMINARY GUIDANCE ==================================================== + Westerly flow develops + More
Hot off the pressure, ECMWF seasonal update for August, September & October
July 2021 – Preliminary Guidance
+++ THIS FORECAST IS FOR PRIVATE CLIENTS ONLY AND MAY NOT BE DISTRIBUTED OR COPIED IN ANY WAY WITHOUT PRIOR PERMISSION. +++ JULY 2021 - PRELIMINARY GUIDANCE =========================== Issued: Wednesday 23rd June 2021 Contact: simon@weatherweb.net HEADLINES ========== + Better first half + Unsettled second half + Very low confidence forecast FACTORS AFFECTING JULY 2021 PRELIMINARY GUIDANCE =============================================== + Slack pressure flows + Dominance
Rest of summer analogues, not the best reading
Video: Wednesday’s Look Ahead – Rain latest PLUS summer outlook from JMA
June 2021 – Final Weather Guidance
+++ THIS FORECAST IS FOR PRIVATE CLIENTS ONLY AND MAY NOT BE DISTRIBUTED OR COPIED IN ANY WAY WITHOUT PRIOR PERMISSION. +++ JUNE 2021 - FINAL GUIDANCE =========================== Issued: Monday 31st May 2021 Contact: simon@weatherweb.net HEADLINES ========== + A mixed month + Dry and warm middle + Unsettled end FACTORS AFFECTING JUNE 2021 FINAL GUIDANCE =========================================== + Thundery trough may move north
June 2021 – Preliminary Guidance
+++ THIS FORECAST IS FOR PRIVATE CLIENTS ONLY AND MAY NOT BE DISTRIBUTED OR COPIED IN ANY WAY WITHOUT PRIOR PERMISSION. +++ JUNE 2021 - PRELIMINARY GUIDANCE =========================== Issued: Wednesday 19th May 2021 Contact: simon@weatherweb.net HEADLINES ========== + A mixed month + Brief drier periods + Potential for unsettled end FACTORS AFFECTING JUNE 2021 PRELIMINARY GUIDANCE ================================================= + Westerly flow dominates + Ridges