NWS Phoenix Skywarn Spotter Program
Southeast California, Southwest and South Central Arizona
When significant, or severe weather occurs anywhere within the Phoenix County Warning Area,
the Weather Service turns to the
SkywarnTM Spotter Network to obtain timely and accurate reports. This network is comprised of
individuals or groups, generally associated with the following: 1) Emergency Service
Organizations (Fire, Police, etc), 2) Volunteer Organizations (HAM Radio, Citizens' Band
Radio, etc), 3) Individual Citizens, and 4) Cooperative Observers.
The Arizona SkywarnTM Net (ASN) welcomes trained spotters to check into our
weekly nets on these repeaters:
146.740 mhz -- each Tuesday at 8 pm
442.800 mhz -- each Wednesday at 8 pm
NWS personnel periodically conduct free Skywarn spotter training classes at locations around the Phoenix
County Warning Area that teach people how to properly identify and report significant weather phenomena
and contribute to public safety. Even with sophisticated technology like radar and satellites, we still
need ground truth information from trained weather spotters throughout the year. The training classes
will prepare the volunteer spotter to identify the development stages of severe thunderstorms, as well
as downbursts, desert flash flooding, and tornadoes. The observed information is relayed to the NWS via telephone or amateur radio.
The NWS uses the information in severe weather warnings and statements, that ultimately
save lives and protect property. In addition, you will learn about all of the services available from the
National Weather Service. Classes will be conducted at the times and locations shown below. Reservations
are not required unless otherwise noted.
If you have any questions, please contact Austin Jamison at 602-275-0073 [option '5']
or by e-mail
or Ken Waters by strong>e-mail at the NWS Phoenix Forecast Office.
|2012 Class Schedule|
Schedule updated: Tue Feb 14 15:26:17 UTC 2012. Check back often for updates.
||Remarks/Registration [if needed]
|Wed April 11
||Tempe Fire Training Facility
||1340 E. Dorsey (far northeast corner of University and Dorsey)
|Sat May 5
||Queen Creek Library
||21802 S. Ellsworth Rd.
||Registration to: Joe LaFortune
|Thu Apr 26
||Mesa Utilities Building
||640 N Mesa Dr
||Registration to Orion Thrower.
|Tue May 5
||Casa Grande FS
|| 3305 N Piper Ave
|Wed May 9
||303 E. Pima St.
||RSVP to: Flor Olivas or call: 928-683-6502
|Tue May 15
||Surprise Fire Dept. Administration
||14250 W. Statler Plaza Suite 101
|Wed May 16
||734 W. Wickenburg Way
When calling, spotters should tell the NWS briefly WHAT they saw or are seeing, WHERE
they are or where they were when it was going on, WHEN it was occurring and WHAT is/was it
doing. They should also include their name, location and their assigned spotter ID number.
The following criteria are what spotters should look for when phoning in their reports. They should always call the responsible
Weather Service Office when any of the below are noted:
(on the ground) or FUNNEL CLOUD
(tail not touching the ground)
ROTATING WALL CLOUD
WIND (estimated or measured
at 40 mph or more)
MICROBURST (visually identified)
RAINFALL (1/2 inch (.50) or more in 30 minutes)
FLOODING (of any kind)
DAMAGE and/or DEATHS and/or INJURIES due to the weather event
HAIL (1/2 inch (.50) diameter, or greater)
VISIBILITY (less than 1/4 mile due to fog, dust, blowing snow or ash)
SNOWFALL (accumulating at a rate of 1 inch or more per hour.
SPOTTERS SHOULD NOT CALL NWS PERSONNEL WITH ROUTINE WEATHER OR FOR FORECASTS!!
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Phoenix Weather Forecast Office
P.O. Box 52025
Phoenix, AZ 85072
Tel: (602) 275-0073
Freedom of Information Act