Local forecast by
"City, St" or zip code |
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Warning/Advisory
Criteria
| Type |
Criteria |
| Winter Storm
Warning |
Snow: 4-6" in 12 hours, or 6-8" in 24 hours. Click each link to see maps that give
specific criteria for each county.
Ice Accumulation: 1/4 inch or more
Also can be issued for hazards judged to pose a threat to life
and property. |
| Winter Weather
Advisory |
Snow: 2-4" in 12 hours. Click link to see map that gives specific criteria for each county.
Ice: Any accretion
Also can be issued for hazards which cause "significant inconvenience"
and warrant extra caution. |
| Blizzard Warning |
Sustained or frequent gusts greater
than or equal to 35 mph AND considerable blowing/drifting
snow frequently reducing visibilities to less than 1/4 mile |
| Wind Chill Advisory |
Wind Chill values less than or
equal to -10° F for 3 hours or more with wind speeds greather
than 5 mph |
| Wind Chill Warning |
Wind Chill values less than or
equal to -25° F for 3 hours or more with wind speeds greather
than 5 mph |
| Frost Advisory |
Issued in conjunction with a killing
frost only (sufficient to end the growing season in fall, or delay it in
the spring); how far low temperatures are below freezing at the ground,
and for what duration are the factors determining if it is a killing frost. |
| Freeze Warning |
Issued in conjunction with temperatures
forecast to be 32° or below for a significant amount
of time (with or without frost) |
| Dense Fog Advisory |
Issued for widespread fog
reducing visibilities to 1/4 mile or less. |
| Heat Advisory |
Heat Index greater than or equal to 100° F
and less than 105° F for 2 hours. |
| Excessive Heat
Warning |
Heat Index greater than or equal to 105°
F for 2 hours. |
| Wind Advisory |
Winds of 31-39 mph sustained
for 1 hour, or between 46 and 57 mph for any duration |
| High Wind Warning |
Winds 40 mph or higher sustained
for 1 hour, or 58 mph or greater for any duration
(non-convective) |
To
report severe weather, call toll-free
1-877-633-6772
or email us at
rlx.storm@noaa.gov
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www.weather.gov 
