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Showing posts from May, 2012

Warm days in May

Warm days in May May 18th (last Friday) brought a warm day to the state with many observers reporting daytime highs in the 90s F, the warmest May 18th since 1998. Madison topped the list with a record-setting 97 degrees F. Other climate stations setting new temperature records on May 18th included: 95 degrees F at Browns Valley; 93 degrees F at Moorhead; 92 degrees F at Park Rapids; and 94 degrees F at Wheaton.

May 22-23 brought more record high temperatures to the region just ahead of heavy thunderstorms. Fargo, ND set a record on the 22nd with 93 degrees F. Then more record highs were set on Wednesday, May 23rd, including 92 degrees F at Amboy, 89 degrees F at MSP and Austin, and 87 degrees F at Lakefield (tied 2010). Strong south winds ushered in very moist air across the state on the 23rd. Between 8:00 pm and 9:00 pm the dewpoint at MSP Airport rose from 51 degrees F to a sticky 65 degrees F.

Heavy rains on May 23-24 Strong winds, hail, and very heavy thundersto…

Very dry air this week

Very dry air this week Following a wet first ten days of the month, May turned quite dry this week, with low dewpoints and high evaporation rates (0.25 to 0.35 inches on May 14). Montevideo (Chippewa County) reported some record-setting low daily humidity readings over May 12-16. Afternoon air temperature and relative humidity are noted for each day:
May 12 70 degrees F with RH of 7%
May 13 75 degrees F with RH of 11%
May 14 88 degrees F with RH of 4%
May 15 72 degrees F with RH of 12%
May 16 73 degrees F with RH of 14%

These humidity readings at Montevideo were the equivalent of those at Tucson, Arizona this week. Many Minnesota citizens were using moisturizing creams and chapstick.

Cold morning on May 16th After a very warm Monday this week (afternoon temperatures ranged from 86 F to 90 F in western Minnesota), Minnesota reported the coldest temperature in the 48 contiguous states on Wednesday morning (May 16) with a reading of 24 degrees F at Embarrass, the first time…

Record rainfalls for some to start early May

Record rainfalls for some to start early May According to the NOAA National Climatic Data Center over the first 7 days of May, Minnesota weather observers reported 62 new daily rainfall records, an exceptionally large quantity of records for such a short period of time. Some examples of the record amounts of rainfall include:

May 1st: 1.73 inches at St Cloud Airport
May 2nd: 2.05 inches at Windom and 2.10 inches at Elk River
May 3rd: 2.21 inches at Zumbrota and Wabasha
May 4th: 1.70 inches at Amboy
May 5th: 2.41 inches at Winnebago and 2.33 inches at Sherburn
May 6th: 2.78 inches at Marshall, 2.86 inches at Hawley, 3.06 inches at Redwood Falls, 3.50 inches at Hastings, and 3.62 inches at Pipestone

The 3.62 inches of rainfall reported at Pipestone on May 6th was a new state record for the date, beating the 3.48 inches that fell at Minnesota on May 6, 1983.

Many observers now report over 4 inches of rainfall for the month, and some have already totaled over 5 inches. Th…

Wet Start to May for Some

Wet Start to May for Some Strong thunderstorms crossed the state overnight from May 1st to 2nd producing numerous reports of heavy rainfall, hail, strong winds, and even tornadoes. NOAA Storm Prediction Center received reports of brief tornado touchdowns in Pope and Stearns Counties between 9:00 and 10:00 pm Tuesday night. No serious damage reports from tornadoes were evident. There were numerous reports of strong winds and large hail (1-2 inches in diameter) from many western and southern counties. Sauk Rapids reported wind gusts to 64 mph while Wabasha reported winds up to 74 mph. Many observers reported rainfall from 0.75 inches to 1.50 inches, and some reported new record rainfall amounts for May 2nd. Among the new record amounts were 2.20 inches at St Francis; 2.10 inches at Elk River; 2.05 inches at Rush City, Slayton, and Windom; and 1.63 inches at Rice. The campus of St Cloud State University reported a rainfall of 3.11 inches.

May 3rd brought more heavy th…