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Why Iowans don't receive wind chill warnings

A new set of cold weather alerts debuted this season.

Why Iowans don't receive wind chill warnings

A new set of cold weather alerts debuted this season.

JUST A LITTLE BIT. BEN. ALL RIGHT. ANNE. THANKS. SO MUCH. DURING THE BREAK, YOU AND I WERE TALKING ABOUT HOW WE’RE NOT READY FOR THE COLD AND FOR THE SNOW. WE DO KNOW, THOUGH, TEMPS ARE EVENTUALLY GOING TO DROP. AND WHEN THEY DO, YOU WON’T BE HEARING THE TERM WIND CHILL WARNING ANYMORE. YES, THIS IS NEW. THE NATIONAL WEATHER SERVICE HAS A NEW TERM FOR IT. ZANE SATRE JOINS US NOW AND ZANE, IT’S GOING TO BE CALLED AN EXTREME COLD WATCH OR WARNING. YEAH, IT’S GOING TO BE 80 DEGREES TOMORROW. SO LET’S TALK ABOUT EXTREME COLD INSTEAD HERE. YES, WE DO WANT TO EVENTUALLY GET YOU PREPARED FOR WINTER. SO OVER THE YEARS WE’VE BEEN USED TO SEEING WIND CHILL WATCHES, WARNINGS, ADVISORIES. WELL THAT’S GOING TO CHANGE HERE. THE WEATHER SERVICE FOR YEARS HAS BEEN TRYING TO KIND OF CONDENSE DOWN THE NUMBER OF DIFFERENT PRODUCTS THEY ISSUE IN THE PAST, THERE HAS BEEN EXTREME COLD WATCHES AND WARNINGS, NOT NECESSARILY HERE IN IOWA, THOUGH, BECAUSE WE’RE USED TO HAVING COLD WITH AT LEAST SOME WIND TOO, BUT NOT ANYMORE. THIS IS GOING TO COVER ALL DIFFERENT TYPES OF COLD SITUATIONS ACROSS THE COUNTRY FROM HERE ON OUT. SO IN THE PAST WE’VE HAD WIND CHILL WATCHES AND WARNINGS OR WIND CHILL ADVISORIES. NOW WHAT WE’RE GOING TO HAVE IS EITHER COLD WEATHER ADVISORIES OR EXTREME COLD WATCHES OR WARNINGS. NOW IS THE MEANING GOING TO CHANGE? NOT NECESSARILY. NOT FOR US, NOT HERE IN IOWA. IT’S GOING TO BE BASICALLY THE SAME SORT OF THRESHOLDS. SO IF YOU’RE GOING TO SEE WIND CHILLS OR JUST TEMPERATURES WHATEVER AT NEGATIVE 20 TO -29, THAT’S GOING TO NOW BE A COLD WEATHER ADVISORY. IF WE’RE GOING TO BE COLDER THAN NEGATIVE 30, THAT’S GOING TO BE AN EXTREME COLD WATCH OR WARNING, WHICH IS THE SAME CRITERIA WE HAD PREVIOUSLY FOR ALL THE STUFF THAT JUST WAS LABELED BY WIND CHILL. WE’RE NOT CHANGING ANY OF THAT. THE WEATHER SERVICE ISN’T CHANGING ANY OF THAT UNLESS YOU’RE UP IN FAR NORTHERN IOWA COUNTIES, NORTH OF HIGHWAY 20. BASICALLY, THE THRESHOLD IS JUST GOING TO BE A LITTLE BIT COLDER, ABOUT FIVE DEGREES COLDER TO GET TO THOSE ADVISORIES OR WATCHES OR WARNINGS. SO IF YOU’RE A SCHOOL SUPERINTENDENT, YOU RUN SOME SORT OF BUSINESS GROUP OR SOMETHING LIKE THAT, AND YOU KEEP AN EYE ON THESE THINGS FOR CLOSURES OR SOMETHING DURING THE WINTER, THIS IS GOING TO BE A DIFFERENCE. AS WE HEAD INTO THE NEW SEASON. ALL RIGHT. AND THANK YOU, ZANE. AND IF YOU HAVE TO SAY IT ON AIR, LIKE WE DO, WE’RE GOING TO TRY TO REMEMBE
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Why Iowans don't receive wind chill warnings

A new set of cold weather alerts debuted this season.

Frigid winds have returned this winter, but the alerts Iowans receive about cold weather have changed.Starting this season, the National Weather Service will no longer issue wind chill warnings, watches or advisories. The agency will instead issue "extreme cold" watches or warnings and "cold weather advisories."Why the change?For years, the NWS has been trying to simplify the various weather alerts it issues. Remember sleet advisories? Blowing snow advisories? Freezing rain advisories? Those were all eventually lumped into the weather weather advisory.The same concept applies here. No more separate alerts for cold and calm vs. cold and windy.Will the temperature criteria be different?For most of Iowa, no. Until now, wind chill advisories were issued if feels-like temperatures were forecast to drop between -20 degrees and -29 degrees. Cold weather advisories will now be issued at that range. If feels-like temperatures will fall below -30 degrees, an extreme cold warning will now go out instead of a wind chill warning. The only exception is northern Iowa. Counties north of Highway 20 now have slightly colder thresholds than the rest of the state for cold weather advisories and extreme cold warnings. Cold weather advisories will be issued at -25 degrees. Extreme cold warnings will be issued at -35 degrees. The National Weather Service uses different warning criteria in various parts of the country. One of those dividing lines now happens to cross through Iowa.

Frigid winds have returned this winter, but the alerts Iowans receive about cold weather have changed.

Starting this season, the National Weather Service will no longer issue wind chill warnings, watches or advisories. The agency will instead issue "extreme cold" watches or warnings and "cold weather advisories."

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iowa weather kcci
Hearst Owned

Why the change?

For years, the NWS has been trying to simplify the various weather alerts it issues.

Remember sleet advisories? Blowing snow advisories? Freezing rain advisories? Those were all eventually lumped into the weather weather advisory.

The same concept applies here. No more separate alerts for cold and calm vs. cold and windy.

Will the temperature criteria be different?

For most of Iowa, no.

iowa weather kcci
Hearst Owned

Until now, wind chill advisories were issued if feels-like temperatures were forecast to drop between -20 degrees and -29 degrees.

Cold weather advisories will now be issued at that range.

If feels-like temperatures will fall below -30 degrees, an extreme cold warning will now go out instead of a wind chill warning.

The only exception is northern Iowa.

Counties north of Highway 20 now have slightly colder thresholds than the rest of the state for cold weather advisories and extreme cold warnings.

iowa weather kcci
Hearst Owned

Cold weather advisories will be issued at -25 degrees. Extreme cold warnings will be issued at -35 degrees.

The National Weather Service uses different warning criteria in various parts of the country. One of those dividing lines now happens to cross through Iowa.