Skies will be mostly clear this evening before becoming mostly cloudy overnight. Scattered showers and thunderstorms will develop overnight, mainly south and west of Madison as a warm front develops over Iowa and Illinois. Temperatures will fall to the upper 60s by late evening; overnight low temperatures will fall to near 60 degrees by morning.
Wednesday will be mostly cloudy and more humid with occasional showers and thunderstorms likely. As the warm front moves toward southern Wisconsin, some thunderstorms may be severe, with hail, high winds, and heavy rainfall. High temperatures will be near 80 degrees, but may range from the lower to middle 80 near the Illinois state line south of the warm front to the lower to middle 70s well north of Madison. Showers and thunderstorms will continue into Wednesday evening; some thunderstorms may be severe. A cold front will move through Wisconsin on Wednesday night, ending the chances for thunderstorms and severe weather.
Mostly cloudy skies early on Thursday will become partly sunny for the remainder of the day with pleasant high temperatures in the upper 70s. High pressure will return on Friday with mostly sunny skies and warmer weather. High temperatures will reach the lower to middle 80s.
Saturday will be partly sunny, breezy, very warm, and more humid ahead of an approaching storm system, with high temperatures in the upper 80s and heat index values in the lower to the middle 90s. While there will be a slight chance of a shower or thunderstorm on Saturday, showers and thunderstorms will become likely later Saturday night as the storm system enters Wisconsin. Sunday will be variably cloudy, breezy, very warm, and humid day with scattered showers and thunderstorms. High temperatures will again reach the upper 80s, with heat index values in the lower to the middle 90s.
After the passage of a cold front, Monday will be partly sunny and warm, but should turn less humid with high temperatures in the middle 80s. Tuesday will be partly sunny and cooler; high temperatures will be in the middle to the upper 70s.
TONIGHT:
Mostly clear this evening, then becoming mostly cloudy overnight with showers and thunderstorms developing, mainly south and west of Madison.
Low: 60
Wind: Becoming Light and Variable
WEDNESDAY:
Mostly cloudy and more humid with occasional showers and thunderstorms; some thunderstorms may be severe with high winds, hail, and heavy rainfall.
High: 79
Wind: S/SE 8-15 MPH
WEDNESDAY NIGHT:
Mostly cloudy with showers and thunderstorms, mainly in the evening; a few thunderstorms may be severe early.
Low: 62
Wind: N 8-15 MPH
THURSDAY:
Mostly cloudy early, then becoming partly sunny.
High: 77
Wind: N/NE 8-15 MPH
FRIDAY:
Mostly sunny and warmer.
Low: 57
High: 84
SATURDAY:
Partly sunny, breezy, very warm, and more humid with a slight chance of showers and thunderstorms (becoming mostly cloudy with showers and thunderstorms likely at night).
Low: 65
High: 88; Heat Index: 90 to 95
SUNDAY:
Variable cloudiness, very warm, and humid with scattered showers and thunderstorms.
Low: 71
High: 87; Heat Index: 90 to 95
MONDAY:
Partly sunny and warm, but less humid.
Low: 64
High: 84
TUESDAY:
Partly sunny and cooler.
Low: 56
High: 76
NOTES:
A FLASH FLOOD WATCH has been issued from 10 PM until 10 AM Wednesday morning for eastern and parts of northeastern Iowa, and northwestern Illinois. In Iowa, this includes the counties of CLAYTON, DELAWARE, and DUBUQUE. In Illinois, this includes the counties of JO DAVIESS and STEPHENSON.
A FLASH FLOOD WATCH has been issued from 7 AM Wednesday morning until 1 AM early Thursday morning for north-central and northeastern Illinois, including the counties of WINNEBAGO, BOONE, and McHENRY (this includes the Rockford and Chicago metropolitan areas).
The Storm Predication Center says that there is a SLIGHT RISK of severe thunderstorms for tonight for southwestern Minnesota, most of Iowa and parts of northwestern and west-central Illinois, and a MARGINAL RISK of severe thunderstorms for the rest of the southwestern third of Minnesota, the rest of Iowa, the rest of western and southern Illinois, and extreme southwestern Wisconsin (south and west of a La Crosse to Darlington line). A warm front to the south and west of Wisconsin will cause thunderstorms to develop across southern Minnesota and eastern Iowa overnight, moving into southwestern Wisconsin and western Illinois toward morning. Hail will be the main threat north of the warm front, with high winds possible nearer the warm front in Iowa and Illinois. Heavy rainfall is also possible.
There is a MODERATE RISK of severe thunderstorms for Wednesday and Wednesday night across much of the northern third of Illinois, and for southeastern Wisconsin (east and south of a Darlington to Madison to Milwaukee line). There is an ENHANCED RISK of severe thunderstorms for extreme eastern Iowa, the rest of the northern half of Illinois, and the rest of the southern quarter of Wisconsin (south of a Prairie du Chien to Wisconsin Dells to Sheboygan line); a SLIGHT RISK of severe thunderstorms for southeastern Minnesota, the rest of the northeastern third of Iowa, the rest of the northeastern two-thirds of Illinois, and the rest of the southern third of Wisconsin (south of a Minneapolis to Oshkosh to Manitowoc line), and a MARGINAL RISK of severe thunderstorms for the rest of the southern half of Minnesota, most of the rest of Iowa, most of the rest of Illinois, and rest of the southern half of Wisconsin (south of a Hayward to Green Bay line). A significant severe weather outbreak is possible on Wednesday over the central Midwest. Thunderstorms near and north of a warm front from Iowa into northern Illinois on Wednesday morning may be severe, with hail, high winds, and heavy rainfall as the main threats. After these thunderstorms weaken and move into Lake Michigan and Indiana, clouds should clear and the warm front may move northward toward the Wisconsin/Illinois state line. Hot and humid air south of the warm front will be overrun by drier air from the southwest along a cold front advancing through Iowa into Illinois as low pressure moves through southern Wisconsin. Severe thunderstorms will rapidly develop in the afternoon near the warm and cold fronts, with hail, damaging winds, heavy rainfall, and tornadoes all possible. Widespread wind damage is possible with the thunderstorms as they move through northeastern Illinois ahead of the cold front on Wednesday evening. The severe weather threat will end with the passage of the cold front Wednesday night.
Download our weather app
Interactive radar
Radar images (Mobile radar images)
ليست هناك تعليقات:
إرسال تعليق