Weather It Is (No Cooperation!)

Good Morning:

Well, certainly the next few days will be nice -- as winds switch to the southwest and milder air flows our way. Skies should be mostly clear with just a slight tinge of dust.

However, on Tuesday, a storm in the southern Jet Stream should phase with the northern Jet Stream and this will set the stage for a return of winter.  Now, I don't mean the normal topsy-turvy weather of past years (a warm pre-indenependence day/Yom Zikoron) followed by a bit of chill and wind.  I mean some real winter chill and strong winds (with the changeover from mild weather to colder weather beginning Tuesday night). At the moment, this storm looks to be relatively colder in the lower atmosphere than upper atmosphere, so any rain that falls would be more of the lighter variety.  For example, temperatures at 850 mb may reach  1 or 2 C by Friday morning, but at 500 mb only -17 C (compared to +6/-24 C during our booming thunderstorms of yesterday.

The cold weather should last into Shabbat, when temperatures should moderate a bit.  They may fall off on Sunday and then a Sharav low will threaten us from the south with more extreme heat and dust early the week after next.

Barry Lynn