September in early August. That’s what Sunday felt like. The Sunday high at Minneapolis-St. Paul International Airport was 73 degrees, which was 10 degrees shy of our average August 2 high of 83. It’ll be a few days before we see highs in the 80s.
Temperature trends
Highs will be in the 70s on Monday across most of Minnesota and western Wisconsin:
Monday forecast highs
National Weather Service
A few spots in northeastern Minnesota may only reach the 60s.
Dew points will be in the comfortable upper 40s and lower 50s:
Monday 1 p.m. forecast dew points
National Weather Service
Winds will be fairly light on Monday.
Twin Cities metro area highs are projected to reach the mid 70s on Tuesday, followed by upper 70s Wednesday, around 80 on Thursday and mid 80s Friday. Dew points will start to ramp up late Thursday into Friday. We could see scattered showers and thunderstorms Wednesday evening and on Thursday and Friday.
Some forecast models show metro area highs in the upper 80s next weekend. It looks like a humid weekend, too. Warmer-than-normal temps could continue into the first part of the following week. The NWS Climate Prediction Center shows a tendency for above-normal temperatures in Minnesota and Wisconsin from August 8 through August 12:
Temperature outlook August 8 through August 12
NWS Climate Prediction Center
Tropical Storm Isaias update
Tropical Storm Isaias may pick up strength before it makes landfall:
As of 4 p.m. CDT Sunday, Tropical Storm Isaias was centered 65 miles southeast of Cape Canaveral, Florida. Maximum sustained winds were 70 mph and Isaias was moving to the north-northwest at 9 mph.
The NWS National Hurricane Center has this projected track for Isaias over the next few days, along with the cone of uncertainty for the track:
Isaias forecast track
NWS National Hurricane Center
A combination of tropical storm warnings, storm surge warnings and hurricane watches have been issued for Isaias. Here’s the NHC Sunday afternoon advisory on Isaias:
Tropical Storm Isaias Advisory Number 23 NWS National Hurricane Center Miami FL AL092020 500 PM EDT Sun Aug 02 2020 ...ISAIAS STRENGTHENS SLIGHTLY WHILE MOVING NORTH-NORTHWESTWARD JUST OFFSHORE THE EAST-CENTRAL FLORIDA COAST... ...HURRICANE WATCH AND STORM SURGE WARNING ISSUED FOR PORTIONS OF THE CAROLINAS... SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...27.8N 79.8W ABOUT 65 MI...105 KM SE OF CAPE CANAVERAL FLORIDA ABOUT 410 MI...660 KM S OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: A Storm Surge Warning is in effect from Edisto Beach South Carolina to Cape Fear North Carolina. A Storm Surge Watch is in effect from Cape Fear to Duck North Carolina, including Pamlico and Albemarle Sounds. A Hurricane Watch is in effect from South Santee River South Carolina to Surf City North Carolina. The Tropical Storm Warning has been extended northward to Ocracoke Inlet North Carolina. The Tropical Storm Watch has been extended northward to Watch Hill Rhode Island, including the Chesapeake Bay, the Tidal Potomac River, Delaware Bay, Long Island and Long Island Sound. The Tropical Storm Warning has been discontinued south of Sebastian Inlet Florida. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Edisto Beach South Carolina to Cape Fear North Carolina A Storm Surge Watch is in effect for... * Cape Fear to Duck North Carolina * Pamlico and Albemarle Sounds A Hurricane Watch is in effect for... * South Santee River South Carolina to Surf City North Carolina A Tropical Storm Warning is in effect for... * Sebastian Inlet Florida to Ocracoke Inlet North Carolina A Tropical Storm Watch is in effect for... * Ocracoke Inlet North Carolina to Watch Hill Rhode Island * Pamlico and Albemarle Sounds * Chesapeake Bay * Tidal Potomac River * Delaware Bay * Long Island and Long Island Sound Interests elsewhere along the northeast coast of the United States should monitor the progress of Isaias. Additional watches or warnings may be required tonight or early Monday. A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, generally within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 500 PM EDT (2100 UTC), the center of Tropical Storm Isaias was located by an Air Force Reserve reconnaissance aircraft and NOAA Doppler weather radars near latitude 27.8 North, longitude 79.8 West. Isaias is moving toward the north-northwest near 9 mph (15 km/h), and this general motion is expected to continue through tonight. A turn toward the north and north-northeast along with an increase in forward speed is anticipated on Monday and Tuesday. On the forecast track, the center of Isaias will pass just to the east of the Florida east coast through tonight. The center of Isaias will move offshore of the coast of Georgia and southern South Carolina on Monday, move inland over eastern North Carolina Monday night and move along the coast of the mid-Atlantic states on Tuesday. Data from the aircraft and the Melbourne, Florida, Doppler radar indicate that maximum sustained winds have increased to near 70 mph (110 km/h) with higher gusts. Some fluctuations in strength will be possible during the next 36 hours, but Isaias is expected to be a strong tropical storm when it reaches the coast of northern South Carolina and southern North Carolina Monday night. Slow weakening is forecast after Isaias makes landfall in the Carolinas and moves across the U.S. mid-Atlantic region late Monday and Tuesday. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. A weather station at Sebastian Inlet, Florida, recently measured a wind gust of 49 mph (80 km/h). The minimum central pressure based on reports from the reconnaissance aircraft is estimated to be 994 mb (29.36 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Isaias can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Edisto Beach SC to Cape Fear NC...2-4 ft Sebastian Inlet FL to Edisto Beach SC...1-3 ft North of Cape Fear NC to Kiptopeke VA including Pamlico Sound, Albemarle Sound, Neuse River, Pamlico River, Chesapeake Bay, and the Tidal Potomac River...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Hurricane conditions are be possible in the watch area in South and North Carolina Monday night and early Tuesday. Tropical storm conditions will spread northward within the Tropical Storm Warning area from Florida to North Carolina through Monday night. Tropical storm conditions are possible in the Tropical Storm Watch area beginning on Tuesday. RAINFALL: The following rainfall accumulations are expected along and near the track of Isaias: Northwest Bahamas: Additional 1 to 3 inches, isolated storm totals 12 inches. Eastern Florida: Additional 1 to 3 inches, isolated storm totals 4 inches. Coastal Georgia: 1 to 2 inches. Carolinas and the Mid-Atlantic: 3 to 6 inches, isolated maximum totals 8 inches. Southeast New York and much of New England: 2 to 4 inches, isolated maximum totals 6 inches. Heavy rainfall from Isaias will continue to result in potentially life-threatening flash flooding in the Northwestern Bahamas through tonight. Flash and urban flooding, some of which may be significant in the eastern Carolinas and the Mid-Atlantic, is expected through midweek along and near the path of Isaias across the East Coast of the United States. Widespread minor to isolated moderate river flooding is possible across portions of the Carolinas and the Mid-Atlantic. SURF: Swells generated by Isaias are affecting portions of the Bahamas and the southeast coast of the United States and will spread northward along the U.S. east coast during the next couple of days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A few tornadoes will be possible over coastal South Carolina during the afternoon and evening on Monday, and across eastern North Carolina Monday evening and overnight.
The National Hurricane Center typically issues updates every few hours.
In addition to damage from strong winds and the storm surge, some areas will see heavy rain from Isaias over the next few days:
Potential rainfall over the next few days
National Weather Service
Programming note
You can hear my live weather updates on MPR News at 7:35 a.m., 9:35 a.m. and 4:35 p.m. each Saturday and Sunday.
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