This is the first day of summer, yet cooler weather is expected for much of Iowa after unseasonable highs in the 90s the past two days. The arriving cool front brings the risk of severe weather across much of Iowa, according to meteorologist Darren Snively at the National Weather Service. For starters, the storms should bring much-needed moisture. Snively says, “We’re looking at wide-spread rains in the range of a quarter to a half-inch, with locally heavier amounts in the stronger thunderstorms.” He says Iowans may need to stick by their radios later today for updates on possible rough weather moving in.
“There is a risk for some severe storms,” Snively says. “The main threats are large hail, strong winds, probably the heavier rain, and minor street flooding would be the biggest threat out of these.” The forecast calls for nicer weather for Thursday and Friday with sunny to mostly-sunny skies and highs mainly in the 80s statewide. For details, visit: weather.gov.
Wed., June 20 2012 – NWS Des Moines (issued 4:58-a.m.)
A SLIGHT RISK OF SEVERE STORMS IS FORECAST FOR THIS AFTERNOON INTO TONIGHT AS A LINE OF THUNDERSTORMS LOOKS TO DEVELOP ALONG AND AHEAD OF A SHARP COLD FRONT. THE GREATEST SEVERE THREAT WITH THIS LINE OF THUNDERSTORMS WILL BE DAMAGING WINDS AND LARGE HAIL…WHILE A LOWER THREAT OF A TORNADO EXIST. LOCALLY HEAVY RAIN WILL ALSO ACCOMPANY THESE STORMS.
SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND TONIGHT.
Here’s the (Podcast) Freese-Notis forecast for Atlantic the KJAN listening area, and today’s weather data for Atlantic….
Today: Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 87. Windy, with a south southwest wind between 15 and 21 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight: Showers and thunderstorms likely before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 58. Breezy, with a north northwest wind 13 to 16 mph decreasing to between 5 and 8 mph. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday: Sunny, with a high near 83. West northwest wind between 6 and 13 mph.
Thursday Night: Mostly clear, with a low around 57. North northwest wind between 3 and 7 mph.
Friday: Mostly sunny, with a high near 85. Calm wind.
Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.
Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night: Partly cloudy, with a low around 68.
Sunday: Sunny, with a high near 87.
COUNTIES IN IOWA: POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE; IN NEBRASKA: SARPY-LANCASTER-CASS- OTOE-SALINE-JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON-
DAY ONE…TODAY AND TONIGHT: SOUTH WINDS WILL GUST TO 40 TO 45 MPH AT TIMES THIS AFTERNOON. HEAT INDEX VALUES WILL TOP OUT AROUND 100 TODAY.
DAYS TWO THROUGH SEVEN…WEDNESDAY THROUGH MONDAY:
THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY AND WEDNESDAY NIGHT. STORMS MAY BE STRONG TO SEVERE WITH LARGE HAIL…DAMAGING WINDS…AND LOCALLY HEAVY RAIN. THE NEXT CHANCE FOR THUNDERSTORMS WILL BE FRIDAY THROUGH SATURDAY..
The Freese-Notis (Podcast) forecast for Atlantic & the KJAN listening area & weather data for Atlantic…
259 AM CDT TUE JUN 19 2012
TODAY…SUNNY…BREEZY. HIGH IN THE LOWER 90S. SOUTH WIND 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.
TONIGHT…PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY CLOUDY. BREEZY. LOW IN THE LOWER 70S. SOUTH WIND 15 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY…MOSTLY CLOUDY. A CHANCE OF THUNDERSTORMS IN THE MORNING…THEN THUNDERSTORMS LIKELY IN THE AFTERNOON. BREEZY. NOT AS WARM. HIGH IN THE LOWER 80S. SOUTHWEST WIND 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH. CHANCE OF THUNDERSTORMS 70 PERCENT.
WEDNESDAY NIGHT…MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT…THEN PARTLY CLOUDY WITH A SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. COOLER. LOW IN THE LOWER 60S. NORTHWEST WIND 5 TO 10 MPH. CHANCE OF THUNDERSTORMS 50 PERCENT.
THURSDAY…MOSTLY SUNNY. HIGH IN THE MID 80S. NORTHWEST WIND NEAR 5 MPH.
THURSDAY NIGHT AND FRIDAY…PARTLY CLOUDY. LOW IN THE LOWER 60S. HIGH IN THE MID 80S.
FRIDAY NIGHT AND SATURDAY…PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS. LOW AROUND 70. HIGH IN THE UPPER 80S.
Hot and humid conditions with near record temperatures will be in place over much of Iowa today. Heat Indices will reach 95 to 105 degrees in the afternoon. Though these conditions are not considered life threatening to most, the uncomfortable weather will require that special attention be paid by persons who live in metropolitan areas where Heat Island effects are most common, and to persons who are more susceptible to heat related health problems, especially the elderly or those who have preexisting health problems.
If you plan on working or being outdoors today, make sure that you drink plenty of water, wear loose fitting and light colored clothes, rest when you feel the need to take a break, and seek shade from time to time to cool off. Also remember to check on the elderly and make sure that pets have adequate sources of water and shelter to prevent heat stress.
For more Heat Safety tips and rules: http://www.crh.noaa.gov/dmx/?n=preparesummersafety
Iowans who want to keep close tabs on weather warnings may now be able to get them on their cellular phones, beginning today (Monday). The nation’s emergency alert system is starting a new program this week. Al Kenyan, a project manager with FEMA, says people need to check with their cell phone carrier to see if it’s an option to receive these potentially-life-saving alerts. “It’s similar to a text message but it’s not a text message,” Kenyan says. “You need to have probably a newer handset or a handset that has the capability to receive these messages.”
Kenyan says it’s part of a larger effort to modernize the emergency warning system. The wireless weather alerts will let you know about things like severe thunderstorms or tornado warnings. He says Iowans should take those warnings seriously.”When (people) get an alert, whether it’s from wireless emergency alerts or from the radio station they’re listening to or a television station, take action on it,” Kenyan says. “We’ve had cases where people have been alerted to a tornado warning and they said, ‘Well, that’s interesting,’ and they didn’t take action and they get hurt. That’s a very bad thing.”
The new program is through a partnership between FEMA, the FCC, the National Weather Service and cellphone carriers.