Spotter Networks Frequency's
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Iowa Amateur Networks Frequency's

NWS offices around the country utilize various spotter networks for severe and other inclement weather verification and reporting. The various spotter networks are comprised of emergency management officials, law enforcement, fire fighters, EMS personnel, and road crews. We also utilize the general public with training taking place during the late winter and early spring as NWS personnel travel to various counties to provide training. A final group of spotters utilized by our NWS office are amateur radio operators.

Amateur Radio Operators (HAMS) are a vital link in the spotter and communication network used by the NWS during severe or otherwise inclement weather. Not only do they report what they see with their own eyes, but they can report what others see, and also provide communications to other NWS offices should normal communication modes fail. The following graphics depict single repeaters, linked repeater systems, or a combination thereof which we utilize often. New repeaters continue to be installed by dedicated and hard-working hams to expand their networks. We also continue to learn of and put into use these new systems as soon as possible.

For now, we will not list 2 meter and 70 cm repeaters outside of our 51 county warning area (depicted by the purple outline), unless they also serve some of our counties. If you notice errors or omissions, know of new repeaters that need to be added, need to change your spotter address or phone number, or just have a SKYWARN/spotting question, drop us a line at dmx.spotteradmin@noaa.gov and we take care of your request ASAP. Note: This email address is not for sending severe weather reports, but instead is for administrative tasks. For severe weather reporting via the internet, please click here.

Keep in mind the maps depict approximate signal coverage with radio propagation characteristics, geography, equipment reliability, etc. all affecting coverage of a given repeater. Since many of these repeaters are linked please give them a second or two to connect.

Here's a three page pdf file of the same information in a format that will print nicely on three pages.

LocationOutput RXInput TXTx Tone
Grimes146.610 MHz146.010 MHz114.8 Hz
Williams444.500 MHz449.500 MHz151.4 Hz
Mason City146.760 MHz146.160 MHz103.5 Hz
Scranton444.300 MHz449.300 MHz

151.4 Hz

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Click the Pictures to make to bigger
LocationOutput RXInput TXTx Tone
Sheldahl147.075 MHz147.675 MHz114.8 Hz
Storm Lake146.775 MHz146.175 MHz110.9 Hz
Humboldt442.400 MHz447.400 MHz110.9 Hz

Notes: The Storm Lake repeater is linked to the She Dahl repeater via the ICN while Humboldt is linked to Storm Lake via RF.

LocationOutput RXInput TXTx Tone
Menlo147.045 MHz147.645 MHz114.8 Hz
Creston146.790 MHz146.190 MHz136.5 Hz
Elk Horn444.900 MHz449.900 MHz151.4 Hz
Prescott145.510 MHzMHz127.3 Hz
Avoca147.255 MHz147.855 MHz151.4 Hz
Greenfield444.700 MHz449.700 MHz173.8 Hz
Atlantic147.150 MHz147.750 MHz151.4 Hz
Clarinda444.750 MHz449.750 MHz127.3 Hz
Bedford443.700 MHz448.700 MHz136.5 Hz
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LocationOutput RXInput TXTx Tone
Grimes443.400 MHz448.400 MHz151.4 Hz
Gilman444.150 MHz449.150 MHz151.4 Hz
Baxter444.225 MHz449.225 MHz151.4 Hz
Newton442.300 MHz447.300 MHz151.4 Hz
Afton442.400 MHz447.400 MHz151.4 Hz
Marshalltown443.325 MHz448.325 MHz110.9 Hz
Chelsea442.125 MHz447.125 MHz151.4 Hz
LocationOutput RXInput TXTx Tone
Bedford147.135 MHz147.735 MHz203.5 Hz
Des Moines146.820 MHz146.220 MHz203.5 Hz
Pella145.170 MHz144.570 MHz203.5 Hz
Waterloo444.900 MHz449.900 MHz203.5 Hz
Davenport146.940 MHz146.340 MHz203.5 Hz
Mason City147.315 MHz147.915 MHz203.5 Hz
Note #1:  For local use only (no ICN access) on the Waterloo repeater, use a PL tone of 136.5.

Note #2:  For local use only of the Des Moines Hub, use a PL tone of 114.8.

Note #3:  For local use only of the Bedford repeater, use a PL tone of 127.3.

Note #4:  For local use only of the Davenport repeater, there is no PL tone.

Note #5:  For local use only of the Mason City repeater, use a PL tone of 103.5.

These repeaters are linked to the main Des Moines Hub via the Iowa Communications Network fiber optic system.  You must have the PL tone turned on to access the ICN Hub and the remote repeaters.

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Iowa Severe Weather

CountyOrganizationTX/RX
*STATEWIDE*Iowa REACT Teams151.625
*STATEWIDE*Statewide Civil Defense Net154.280

Quad Cities Amateur Storm

FrequencyInput TXDescriptionStateMode
146.880146.280Quad Cities Primary

Iowa

FM

146.940

146.340

Quad Cities Secondary

Iowa

FM

General Mobile Radio Service (GMRS)

FrequencyInput TXLicenseTypeToneAlpha TagDescriptionStateModeTag
462.575

467.575

WPRV616

RMB114.8 PLW BrlgtnGMRS

West Burlington Repeater

Iowa

NFM

575

462.600462.600 MB141.3 PL

600GMRS

600 GMRS

Iowa

NFM

600

Amateur Storm Chasers
Note: The use of a CTCSS (PL) tone is designed to help eliminate any bleedover from paging systems and intermod in metropolitan areas. If possible, leave your CTCSS (PL) decoder in open receive mode.
Frequency Type Tone Out Alpha TagDescriptionMode Tag
146.55000M114.8 PLSC PrimaryMany Amateur storm chasers use or monitor this frequencyFMHam
146.46000M114.8 PLSC SecondaryAlternate to 146.550 MHz.FMHam
223.52000M114.8 PLSC 1.25MeterSimplexFMHam
446.07500M114.8 PLSC 70c SmplxSimplex - (often used for cross patching to 146.550 MHz.)FMHam
446.10000M114.8 PLSC 70cm AloAlternate to 446.075 MHz.FMHam
1294.55000 M114.8 PLSC 23c SmplxSimplexFMHam

Burlington Ham Frequency's

Output RXInput TXCityTx ToneCall SignCountyStateComments
146.790146.190Burlington100.0 PLW0LACDes MoinesIowaDes Moines, Iowa County SKYWARN/CERT OPS
147.360147.960Burlington100.0 PLWA6GUFDes MoinesIowaPart of the SEITS linked system covering eastern Iowa.
444.700449.700Burlington WA6GUFDes MoinesIowa 

Project Vortex 2 Frequency's

Radar Teams
The Center for Severe Weather Research operates the Doppler on Wheels, a team of mobile weather research vehicles, including Doppler radar trucks.
Frequency
Type
Tone
Alpha Tag
Description
Mode
Tag
161.400
M
 
Vortex DOW 1
Radar Team Coordination Primary
FM
Federal
161.500
M
 
Vortex DOW 2
Radar Team Coordination Secondary
FM
Federal
151.940
M
 
VortexTelemt
Doppler on Wheels / Tornado Pod Telemetry-Primary
FM
Other
151.820
M
 
VortexTelemt
Doppler on Wheels / Tornado Pod Telemetry-Secondary
FM
Other
158.400
M
203.5 PL
Vortex CSWR
Center for Severe Weather Research-Doppler on Wheels
FM
Other
Research Teams
These research teams have their own channels to coordinate their tasks during the project. Each team has a leader who has two radios-one on the Field Coordinator's frequency and the other on their team's channel.
Frequency
Type
Alpha Tag
Description
Mode
Tag
161.300
M
Vortex Pod 1
Tornado Pod Teams-Primary
FM
Other
161.200
M
Vortex Pod 2
Tornado Pod Teams-Secondary
FM
Other
151.940
M
Vortex Pod 3
Tornado Pod Teams-Tertiary
FM
Other
151.700
M
VortexMsnet1
Mobile Mesonet Teams-Primary
FM
Other
151.940
M
VortexMsnet2
Mobile Mesonet Teams-Secondary
FM
Other
161.000
M
VortexStick1
StickNet Teams-Primary
FM
Federal
160.900
M
VortexStick2
StickNet Teams-Secondary
FM
Federal
173.300
M
Vortex Drone
UAS Team-Unmanned Aerial Surviellance Drones
FM
Federal
173.400
M
VortexDrone2
UAS Team-Unmanned Aerial Surviellance Drones-Secondary
FM
Federal
160.800
M
VortexBaloon
Photogrammetry-Weather Balloon Teams
FM
Federal
Media Following VORTEX 2
Frequency
License
Type
Tone
Alpha Tag
Description
Mode
Tag
151.5125
WQLS817
M
 
Discovery Ch
Discovery Channel-Video Crews
FMN
Media
154.5275
WQLS817
M
 
Discovery Ch
Discovery Channel-Video Crews
FMN
Media
158.4075
WQLS817
M
 
Discovery Ch
Discovery Channel-Video Crews
FMN
Media
151.905
 
M
67.0 PL
IMAX / TIV
IMAX Film Crews-Tornado Intercept Vehicle (TIV) from 2009
FM
Media
National Severe Storms Laboratory-VORTEX 2
VORTEX 2 was a massive research project during the spring of 2010, conducted by the National Severe Storms Laboratory in Norman, OK, involving  weather research vehicles (including mobile radars, and mobile mesonets) across the southern plains. These frequencies may be used for smaller research projects in the future.
Frequency
Input
Type
Alpha Tag
Description
Mode
Tag
163.225
 
M
NSSL Vortex1
NSSL-VORTEX Mobile Weather Research Vehicles-Ch 1 Simplex
FM
Federal
171.9375
163.225
RM
NSSL Vortex2
NSSL-VORTEX Mobile Repeater in Field Coordinator Van used to direct Weather Research Vehicles-Ch 2 Repeater
FM
Federal
161.100
 
M
NSSL Vortex3
NSSL-VORTEX Mobile Repeater in Field Coordinator Van used to direct Weather Research Vehicles-Secondary Channel-Ch 3
FM
Federal
163.100
 
M
NSSL Reserch
NSSL-VORTEX Mobile Weather Research Vehicles-Ch 1 (before 2010)
FM
Federal
165.4375
163.100
RM
NSSL Reserch
NSSL-VORTEX Mobile Repeater in Field Coordinator Van used to direct Weather Research Vehicles-Ch 2 (before 2010)
FM
Federal
163.275
 
M
NSSL Reserch
NSSL-VORTEX Mobile Weather Research Vehicles-Secondary Channel-Ch 3 (before 2010)
FM
Federal
runs from May 1 through June 15, 2010 and involves across the southern plains. NSSL is the coordinating agency for the various participants.
Travel mode is on channel one simplex (163.225MHz). When on site, a mobile repeater (Channel 2 - output 171.9375MHz) in the Field Coordinator (FC) van can be activated to aid communications between vehicles. The FC acts as the net control operator. Channel 3 (161.100MHz) is used for communications that don't involve all vehicles.

 
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This site was last updated Sunday, July 02, 2017 12:58:18 AM By: Ryan Smith