BOONE-STORY-MARSHALL-TAMA-DALLAS-POLK-JASPER-POWESHIEK-MADISON-WARREN-MARION-MAHASKA COUNTIES, INCLUDING THE CITIES OF: BOONE; AMES; MARSHALLTOWN; TAMA; TOLEDO; TRAER; DYSART; GLADBROOK; PERRY; WAUKEE; ADEL; DES MOINES; NEWTON; GRINNELL; WINTERSET; EARLHAM; INDIANOLA; NORWALK; CARLISLE; PELLA; KNOXVILLE and OSKALOOSA…

…OZONE LEVELS MAY BE ELEVATED TODAY…

THE IOWA DEPARTMENT OF NATURAL RESOURCES ADVISES THAT CLEAR SKIES AND VERY WARM TEMPERATURES TODAY MAY BE ASSOCIATED WITH OZONE LEVELS THAT ARE UNHEALTHY FOR SENSITIVE GROUPS SUCH AS CHILDREN…THE ELDERLY AND THOSE WITH ASTHMA OR OTHER RESPIRATORY PROBLEMS. MEMBERS OF THESE GROUPS SHOULD LIMIT OUTDOOR EXERTION DURING THE AFTERNOON AND EARLY EVENING.

IOWANS MAY KEEP TRACK OF EVOLVING AIR QUALITY CONDITIONS ON THE WEB AT WWW.AIRNOW.GOV.

AREA COUNTIES: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-PAGE–

TODAY AND TONIGHT: THE HEAT INDEX WILL REACH THE 99 TO 104 RANGE THIS AFTERNOON. THERE IS A CHANCE FOR THUNDERSTORMS IN NORTHEAST NEBRASKA BY EARLY EVENING…SPREADING INTO EAST CENTRAL NEBRASKA AND WEST CENTRAL IOWA NEAR MIDNIGHT…AND INTO SOUTHEAST NEBRASKA AND SOUTHWEST IOWA LATE TONIGHT AS A COLD FRONT MOVES SOUTH THROUGH THE AREA.

THERE IS A SMALL CHANCE FOR SEVERE THUNDERSTORMS IN NORTHEAST
NEBRASKA THIS EVENING…WITH DAMAGING WINDS THE PRIMARY THREAT. A FEW STRONG STORMS ARE POSSIBLE ALONG AND NORTH OF INTERSTATE
80…BUT THE INTENSITY OF STORMS SHOULD BE DECREASING TOWARD AND
AFTER MIDNIGHT.

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY OR TONIGHT.

MONDAY THROUGH SATURDAY: THERE REMAINS A CHANCE FOR THUNDERSTORMS ACROSS ALL OF THE OUTLOOK AREA MONDAY THROUGH TUESDAY NIGHT. SEVERE STORMS ARE POSSIBLE MONDAY IN SOUTHEAST NEBRASKA AND SOUTHWEST IOWA JUST NORTH OF A COLD FRONT THAT WILL STALL OVER NORTHERN KANSAS AND NORTHERN MISSOURI. AS THAT FRONT MOVES BACK NORTH ON TUESDAY…SEVERE STORMS ARE POSSIBLE OVER MOST OF EASTERN NEBRASKA AND SOUTHWEST IOWA.

AREA COUNTIES: SAC-CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD
502 AM CDT SUN JUN 19 2016

TODAY AND TONIGHT: HOT AND HUMID WEATHER IS EXPECTED TODAY AS HEAT INDEX VALUES LOOK TO RISE INTO THE UPPER 90S TO NEAR 100 THIS AFTERNOON. A MARGINAL RISK FOR SEVERE STORMS IS FORECAST LATE TONIGHT INTO EARLY MONDAY MORNING OVER WESTERN TO NORTHERN IOWA. THE MAIN THREAT WILL BE ISOLATED SEVERE STORMS WITH LARGE HAIL AND DAMAGING WINDS.

SPOTTER INFORMATION STATEMENT:  SPOTTER ACTIVATION MAYBE NEEDED AT TIMES LATE TONIGHT THROUGH EARLY WEDNESDAY.

MONDAY THROUGH SATURDAY: PERIODIC THUNDERSTORM CHANCES CONTINUE MONDAY THROUGH WEDNESDAY. LOCALLY HEAVY RAIN AND ISOLATED SEVERE STORMS ARE POSSIBLE OVER SOUTHERN PORTIONS OF IOWA MONDAY NIGHT. A SLIGHT RISK FOR SEVERE STORMS IS FORECAST FOR TUESDAY AFTERNOON AND EVENING OVER MUCH OF IOWA. LARGE HAIL AND DAMAGING WINDS LOOK TO BE THE MAIN THREAT. IN ADDITION, HEAVY RAIN IS POSSIBLE AND MAY CAUSE SOME LOCALIZED FLASH FLOODING AND EVEN RIVER FLOODING.

Today: Mostly Cloudy becoming Partly Cloudy in the afternoon. High 91. SE @ 10-15.

Tonight: Mostly Clear. Low 64. SE @ 5.

Sunday: Hot and humid. Mostly Sunny. High 95. S @ 15-20.

Sunday Night: Partly Cloudy. Moderate chance of showers and thunderstorms. Low 70.

Monday: Partly Sunny. Moderate chance of showers and thunderstorms.  High 91.

Tuesday: Mix of sun and clouds. Isolated Lingering showers.  High 86.

Wednesday: Mix of sun and clouds. High 92.

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MONONA-HARRISON-POTTAWATTAMIE-MILLS-FREMONT COUNTIES IN IA…HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING…

THE NATIONAL WEATHER SERVICE IN OMAHA/VALLEY HAS ISSUED A HEAT ADVISORY…WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING.

* TEMPERATURE…TEMPERATURES THIS AFTERNOON WILL PEAK AT 93 TO 100 DEGREES. HEAT INDEX VALUES WILL PEAK AT 105 TO 110 DEGREES.

* IMPACTS…HEAT AND HUMIDITY WILL MAKE HEAT-RELATED ILLNESSES SUCH AS HEAT EXHAUSTION AND HEAT STROKE MORE LIKELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. DRINK PLENTY OF FLUIDS… STAY IN AN AIR-CONDITIONED ROOM… STAY OUT OF THE SUN AND CHECK UP ON RELATIVES AND NEIGHBORS.

TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE… RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER.

TO REDUCE RISK DURING OUTDOOR WORK… THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY SO CALL 911.

Today: Partly cloudy. High near 90. SE @ 10-15 mph.
Tonight: P/Cldy w/isolated showers possible. Low around 66. SE @ 5-10.
Tomorrow: P/Cldy w/isolated morning showers possible. High 90. SE @ 10-20.

Sunday: P/Cldy. High near 95.

Monday: P/Cldy w/scattered shwrs & tstrms. High near 90.

Thursday’s High in Atlantic was 94. Our 24-hour Low thru 7-a.m. today was 66. Last year on this date, our High in Atlantic was 85 and the low was 60. The All-time Record High in Atlantic on this date was 102 in 1918. The Record Low was 40 in 1974.

Early This Morning: Clear. East wind near 10 mph.
Today: Sunny. High around 90. Southeast wind 5 to 15 mph.
Tonight: Mostly clear. Low in the upper 60s. East wind near 10 mph.
Saturday: Sunny. High around 90. Southeast wind 5 to 10 mph.
Saturday Night: Mostly clear. Low in the upper 60s. Southeast wind 5 to 10 mph.
Sunday: Sunny. High in the mid 90s. South wind 5 to 15 mph with gusts to around 25 mph.
Sunday Night: Partly cloudy. Low in the lower 70s.
Monday: Partly sunny with a 30 percent chance of thunderstorms. High in the upper 80s.

KANSAS CITY, Mo. (AP) – A sweltering heat wave is expanding as temperatures in the Midwest and South approach near record-setting levels in the waning days of spring. The National Weather Service says the number of states under heat advisories nearly doubled Thursday to 12. The affected states are Missouri, Kansas, Texas, Oklahoma, Arkansas, Mississippi, Iowa, Nebraska, Illinois, Louisiana, Kentucky and Tennessee. A Heat Advisory remains in effect from 1-p.m until 7-p.m. today for southwest Iowa (counties along and south of I-80)

Temperatures are forecast in the 90s across much of those states, but the humidity is expected to make them feel much hotter. Heat indexes are expected to hit 115 degrees in central Oklahoma and northeastern Arkansas.

The weather service in Little Rock said on Twitter: “It’s DISGUSTING out there!” In central Kansas’ Salina, the thermometer hit 106 degrees on Wednesday, tying the record for that date. Some relief is expected this weekend as the humidity decreases.

**HEAT ADVISORY from I-80 south, 1-to 7-p.m.**

Today: Clear to P/Cldy, hot & humid. High near 94. Heat Index as high as 102. E/SE @ 5-10 mph.
Tonight: P/Cldy w/isolated thundershowers. Low around 70. SE @ 5-10.
Tomorrow: P/Cldy w/isolated morning showers. High 89. E/SE @ 10-15.

Saturday: P/Cldy. High near 90.

Sunday: P/Cldy. High 95.

Wednesday’s High in Atlantic was 95. Our 24-hour Low thru 7-a.m. today was 64. Last year on this date, our High in Atlantic was 79 and the low was 58. The All-time Record High in Atlantic on this date was 103 in 1946. The Record Low was 42 in 1974.

346 AM CDT THU JUN 16 2016

HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM for counties along and south of Interstate 80 in southwest Iowa.

EARLY THIS MORNING…PARTLY CLOUDY. NORTHEAST WIND 5 TO 10 MPH.

TODAY…SUNNY. HOT AND HUMID. HIGH IN THE MID 90S. EAST WIND 5 TO 10 MPH. HIGHEST HEAT INDEX READINGS 101 TO 106 IN THE AFTERNOON.

TONIGHT…PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS OVERNIGHT. LOW IN THE UPPER 60S. EAST WIND 5 TO 10 MPH. HIGHEST HEAT INDEX READINGS 101 TO 106 THROUGH MIDNIGHT.

FRIDAY…MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE MORNING. HIGH IN THE LOWER 90S. SOUTHEAST WIND 5 TO 15 MPH.

SATURDAY…MOSTLY SUNNY. HIGH IN THE LOWER 90S. SOUTHEAST WIND 5 TO 15 MPH.

SUNDAY…SUNNY. HIGH IN THE MID 90S.