This week, we're coming out of a cooler pattern that brought us nice conditions over the weekend into one more typical of early summer. A warm front is moving through the region today, bringing an end to the cool weather and placing us back in a "warm sector" that will mean increased humidity, southerly breezes, and temperatures well into the 80s. As high pressure builds over the southeast U.S. (see upper-level forecast map below), upper 80s to near 90 temps and dewpoints in the mid 60s will be common. The high dewpoints, mix of clouds, and steady southerly wind will also mean warm overnight lows near 70 in the metropolitan area.
500mb chart valid Wednesday evening (5/12/10) - click for larger image
These conditions will last for a few days before another cold front approaches the area on Friday. Unfortunately, but not atypically, the strength of the high pressure over the southeast will keep that front from moving through quickly, which will result in daily chances of thunderstorms, primarily of the afternoon and early evening variety, Friday through the weekend. Early signs point to a upper-level trough that will move into the Mississippi Valley early next week which would finally push the front away from the region (see upper-level map below and note the differences from the map above). Depending on cloud cover and precipitation, high temps this weekend should be in the mid 80s with overnight lows remaining in the 60s. The average high temperature for this time of year is near 80 with lows typically dropping to near 60.
500mb chart valid Monday evening (5/17/10) - click for larger image
For the latest forecast conditions on a daily basis visit MemphisWeather.net and the MWN Forecast - the most accurate for the Memphis area.
Get the latest weather conditions and much more by checking out MemphisWeather.net on Facebook and Twitter!