Areas of Excessive Rainfall; Watching for Tropical Cyclone Development in the Atlantic

Heavy to excessive rainfall Wednesday may bring areas of flash and urban flooding over portions of the Ohio and Tennessee Valleys. In Arizona and New Mexico, heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding Thursday into Saturday. Two tropical waves in the Atlantic are being monitored for tropical cyclone formation within the next few days. Read More >

June was a flip-flop month in terms of rainfall, and in general, temperatures were pretty consistently above average throughout, though not necessarily breaking any major daily records. The only places with temperatures around average were adjacent to Lake Superior’s shorelines. Rainfall was below average everywhere, but what was most striking was the drastic change from very sparse rainfall for the first â…” to ¾ of the month, then quite rainy weather to end the month. For example, at Duluth, the rainfall was only 0.28” below average, but it’s notable that almost all of this rain fell between June 22 and June 30. Despite the recent rains, widespread abnormally dry conditions to severe drought persist across the Northland. This coverage has increased substantially since the beginning of June and is indicative of the flash drought that has been occurring since early May. With the recent rains, some rivers and streams have returned to near normal levels, but several are still running below normal.

For the rest of July and through summer, the CPC suggests that temperatures may remain above normal and rain chances are generally equal for above, below, or around average. This is somewhat consistent with patterns that are normally observed in the summer during an El Niño, which is currently occurring.