![]() The resultant upper level flow over the northern tier of the country featured an active jet with a mean shallow low pressure trough over the Great Lakes states. (a persistent heat dome) which was coupled with persistent high latitude jet stream blocking over Greenland, a negative North Atlantic Oscillation pattern. That was the case this July with strong high pressure ridging over the Southwest U.S. THE PATTERN Summer jet stream patterns are typically slow to develop, evolve and ultimately breakdown due to upper level winds being weaker in the warm season versus the winter. (Note: Bennington, VT's rainfall total on the graphic below is incomplete as data for the 18th, 29th, and 31st was listed as missing.) Conversely, there were areas east of Albany in terrain favored areas in Washington, Rensselaer, Rutland, Bennington and Berkshires counties where rainfall amounts surpassed 12.0" for the month with our WeatherNet 6 spotter in Speigletown, Rensselaer County reporting a July monthly total of 14.60". In fact, rainfall, for example, at Glens Falls was pretty close to the July average for that site. So, some of the excessive rain that fell at Albany was in fact due to chance with the airport climate site hit with some of the bigger downpours more frequently through the month than some other locations. ![]() The variation in amounts can be attributed to the convective nature of all the rainfall which is smaller in scale than large synoptic scale or tropical rain shields which tend to distribute precipitation more evenly over large areas. The 10.70" of rain in July 2023 also landed the month as the 3rd wettest overall at Albany of any month on record, with precipitation records at Albany dating back to 1826.Ībove to much above average rainfall was also measured at the four other local climate sites with the departures from the 1991-2020 thirty year average varying from place to place. And as was also the case in July 2009, there were no tropical systems contributing to the excessive amounts of rainfall this July with the rain instead coming from frequent rounds of torrential downpours and thunderstorms, typical summertime convection, just an unusually high amount of it. A total of 10.70" of rain was recorded at Albany making July 2023 the wettest on record to date, far surpassing the previous wettest July on record in 2009 when 9.91" was measured. In fact 24 hour rainfall records were set at Albany on the 2nd, 10th, and 18th. Rainfall was measured at Albany on 19 separate days with excessive rainfall recorded on the 2nd, 10th, 16th and 18th when greater than 1.00" was measured within 24 hours on each of those days. July's weather headline was "Water Everywhere." When it rained, and it rained a lot, it poured.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |