| � Heat Advisory (NPW) |
Non-Precipitation
Examples |
A "Heat Advisory" is issued when the heat index will reach 105
degrees or higher for 2 consecutive days, with temperatures not getting
cooler than 78 degrees at night. A Heat Advisory will also be issued
if the heat index is expected to climb above 110 degrees, no matter what
overnight temperature occurs.
|
| � Freeze Warning (NPW) |
Non-Precipitation
Examples |
Conversely, a "Freeze
Warning" will typically be issued in the spring or fall
growing season if temperatures are expected to be at or
below 32 degrees Fahrenheit for at least 3 hours. In
the fall, this advisory will be issued until a killing
freeze occurs or until the climatological growing season is
already past.
|
| � Wind Chill Advisory (NPW) |
Non-Precipitation
Examples |
A "Wind Chill Advisory"
is issued when cold temperatures and breezy winds combine to
create a wind chill below zero for an hour or
more.
|
| � Wind Advisory (NPW) |
Non-Precipitation
Examples |
A "Wind Advisory" is
generally issued for sustained winds of 25 mph or greater
that will persist for several hours. If caution is not
exercised, the wind could be hazardous to high profile
vehicles.
|
| � High Wind Watch (NPW) |
Non-Precipitation
Examples |
A "High Wind Watch" is
an alert to the potential for sustained winds of 40 mph or
higher, and gusts to 58 mph. A watch may be issued
from 6 to 24 hours in advance of the occurrence of the
event.
|
| � High Wind Warning (NPW) |
Non-Precipitation
Examples |
A "High Wind Warning"
is issued for sustained winds of 40 mph or higher and gusts
to 58 mph.
|
| � Dense Fog Advisory (NPW) |
Non-Precipitation
Examples |
A "Dense Fog Advisory"
is issued when widespread visibilities are expected to be
less than 1/4 mile for any extended period of time. If
temperatures are below freezing, ice could form on bridges
and overpasses.
|
| � Blowing Dust Advisory (NPW) |
Non-Precipitation
Examples |
A "Blowing Dust
Advisory" is issued when widespread visibilities are at
or below 1 mile but greater than 1/4 mile, due to blowing
dust, for any extended period of time.
|
| � Dust Storm Warning (NPW) |
Non-Precipitation
Examples |
A "Dust Storm Warning"
is issued when strong winds produce blowing dust and
visibilities less than 1/4 mile for an extended period of
time. This would only happen during a very extended
dry period.
|
|
|
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