Dew Point: 82-84 (shattering old record of 81) Heat index: 118; all-time record is 119
July 20, 2011 — 2:37pm
Unbelievable. The heat index at MSP reached 118 at 4 pm Tuesday, just one degree away from the all-time heat index record of 119, set in 1966. It felt like 120 at Eden Prairie, 121 at Moorhead.
* Dew Point hit 82 on the hour (which may be the official reading at MSP). But in-between hours the DP rose as high as 84 F. According to a contact at MSP International, "MN Climate Office will have to review and determine if 84 F. stands. In the meantime it's 82F, since it was on an hourly METAR."
Most Humid Day On Record In The Twin Cities. It's official: the dew point hit an astounding 84 at 3:21 and 3:27 pm, to set an all-time record for the most water ever observed in the skies over MSP. We'll have to see if the 84 number stands (it took place between hours), on the hour the dew point was 82. The MN Climate Office will have to verify, as early as Wednesday, whether the new record is 82 or 84. We've had 3 days/row with dew points at or above 80. Some meteorologists theorize that standing water on the Missouri (and "sweaty corn) over southern Minnesota) may be injecting more water into the air. Dew point values are 10 degrees higher at MSP than along the Gulf Coast! Take a bow, you are living through historic heat (and humidity). Wednesday may bring a high of 100 degrees in the Twin Cities. Factor in a dew point of 76-80 and it could easily feel like 115. Mercifully a cooler front knocks the dew point to near 60 by Thursday, meaning HALF as much water in the air as today. Relief is about 36 hours away.
* Heat index reaches 118. All-time record for heat index at MSP is 119, set in 1966!
82 Dew Point at MSP at 2:29 Tuesday Afternoon. A friend of mine, who is an official weather observer at MSP International - forwarded this screen shot to me - proof that the dew point really did hit 82 in the Twin Cities. Whew...
* Severe storm reports from the local NWS office for the storm that rumbled through around midday can be found here.
Nagging Severe Risk. SPC has much of Minnesota and Wisconsin in a "slight risk" today. The immediate threat has passed - but strong/severe storms may redevelop later today, especially north and east of the metro area.
Doppler Rainfall Estimates. Some 3"+ rainfall reports were calculated, using Doppler radar algorithms - the supercell storm that dived southeast into the metro dropped some 1-1.5" rainfall amounts locally.
Paul Douglas is a nationally respected meteorologist with 35 years of television and radio experience. A serial entrepreneur, Douglas is Senior Meteorologist and Founder of Media Logic Group. Douglas and a team of meteorologists, engineers and developers provide weather services for various media at Broadcast Weather, high-tech alerting and briefing services for companies via Alerts Broadcaster and weather data, apps and API’s from Aeris Weather. His speaking engagements take him around the Midwest with a message of continuous experimentation and reinvention, no matter what business you’re in. He is the public face of “SAVE”, Suicide Awareness, Voices of Education, based in Bloomington. Send Paul a question.
Monday felt like a typical day....in mid-July. A minor reality check sets in today as winds blow from the north; chasing downpours into Iowa and Wisconsin, treating us to a cooling trend into Thursday. We warm up a little next weekend with scattered T-storms by Sunday and early Labor Day. Hey, it's a holiday - keep expectations low. No storms with names....
Well, at least it was better than Saturday. After a foggy (thundery) start the sun came out and temperatures reached the mid-80s. Up north severe storms erupted, even a few large and violent (PDS) tornadoes in Polk County. Yes, a bit odd for late August. Expect sticky sun today with another round of irritable storms later in the day. We cool off and dry out by midweek - more storms may be brewing next weekend, but not as formidable as what residents of Florida and the Carolinas are tracking.
I'm happy to report that today will be even nicer than yesterday! That's a pretty low bar, granted, but we should top 80F today with some sunshine, higher humidity and a few stray T-storms. 80s will be the rule this week, with warmer than average weather spilling into Labor Day weekend. The risk of a Gulf Coast hurricane seems to be increasing again - water temperatures in the Gulf are very warm, which may fuel a big storm within a few days.
Thursday was a breath of fresh air and today will be another fine day with blue sky, light winds and no rain (amazing). Showers and T-storms return late tonight into Saturday as the atmosphere tries to warm up again - Sunday should be sunnier, warmer and drier. Summer comes rushing back next week with more 80s, even a few 90s possible by the end of next week. Hermine impacting Florida and the Gulf Coast? Still a definite maybe, but the storm is a sloppy mess; it's unclear if and when conditions will be ripe for strengthening.