[HCRA] Wind chill outlook

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Sun, 19 Jan 2003 17:02:50 -0500


WIND CHILL OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
830 AM EST SUN JAN 19 2003

...BITTERLY COLD WIND CHILL READINGS EXPECTED TUESDAY NIGHT...

A COLD FRONT WILL PASS ACROSS THE REGION MONDAY EVENING.  THIS WILL 
USHER IN THE STRONGEST ARCTIC BLAST OF AIR TO DATE THIS SEASON FOR 
SOUTHERN NEW ENGLAND.  THE ARCTIC AIR COMBINED WITH BRISK NORTHWEST 
WINDS WILL LIKELY PRODUCE WIND CHILLS OF 15 TO 25 DEGREES BELOW ZERO 
FOR MUCH OF INTERIOR SOUTHERN NEW ENGLAND MONDAY NIGHT AND EARLY 
TUESDAY MORNING.  ONLY SLIGHT IMPROVEMENT IS LIKELY DURING THE DAY 
TUESDAY.  DURING TUESDAY AFTERNOON...WIND CHILLS WILL LIKELY NOT 
RISE PAST THE 5 BELOW TO 15 BELOW RANGE. 

BITTERLY COLD WIND CHILL VALUES BETWEEN 25 AND 35 DEGREES BELOW ZERO 
ARE POSSIBLE ON TUESDAY NIGHT.  THE AIR TEMPERATURE ALONE WILL 
LIKELY DROP TO BELOW ZERO ACROSS ALL OF SOUTHERN NEW ENGLAND BACK 
FROM THE IMMEDIATE SOUTH COAST...CAPE COD AND THE ISLANDS.  EVEN 
DOWNTOWN BOSTON AND PROVIDENCE WILL LIKELY RECORD SUBZERO 
TEMPERATURES BOTH TUESDAY AND WEDNESDAY NIGHTS.  A FEW SPOTS IN 
SOUTHWEST NEW HAMPSHIRE AND NORTHWEST MASSACHUSETTS MAY REACH OR 
EXCEED TEMPERATURES OF 15 BELOW BY DAYBREAK WEDNESDAY MORNING.  

A WIND CHILL ADVISORY MAY BE NEEDED FOR MONDAY NIGHT...AND A WIND 
CHILL WARNING MAY NEED TO BE ISSUED FOR AT LEAST TUESDAY NIGHT.  

WHEN PEOPLE ARE EXPOSED TO VERY COLD WEATHER FOR PROLONGED PERIODS...
FROSTBITE OR HYPOTHERMIA CAN RESULT.  THE WIND CHILL INDEX IS BASED
ON THE RATE OF HEAT LOSS FROM EXPOSED SKIN CAUSED BY THE COMBINED
EFFECTS OF WIND AND COLD.  AS THE WIND INCREASES...HEAT IS CARRIED
AWAY FROM THE BODY AT AN ACCELERATED RATE...DRIVING DOWN THE BODY
TEMPERATURE.  ANIMALS ARE ALSO AFFECTED BY WIND CHILL.

WIND CHILL VALUES LOWER THAN 15 BELOW ZERO CAN CAUSE FROSTBITE IF 
SKIN IS EXPOSED FOR 30 MINUTES.  FROSTBITE CAN OCCUR WITHIN 10 
MINUTES IF WIND CHILL READINGS DROP LOWER THAN 30 BELOW.

THE NATIONAL WEATHER SERVICE ISSUES A WIND CHILL ADVISORY WHEN LOW 
TEMPERATURES AND THE SUSTAINED WIND CAUSES WIND CHILLS FROM 15 TO 24 
DEGREES BELOW ZERO FOR AT LEAST THREE HOURS.  THIS CAN BE REACHED... 
FOR EXAMPLE...WHEN THE AIR TEMPERATURE IS 5 DEGREES ABOVE ZERO AND 
THE SUSTAINED WIND IS 18 MPH.  IN SOUTHERN NEW HAMPSHIRE...AN 
ADVISORY IS ISSUED WHEN THE WIND CHILL INDEX IS BETWEEN 20 AND 29 
DEGREES BELOW ZERO.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE RADIO OR 
TELEVISION STATION FOR THE LATEST ON THIS FRIGID WINTER WEATHER.

$$

VALLIER-TALBOT/KAB



                               Eric Tuller   N1QKO
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