SKYWARN · Wyoming

NWS Riverton RIW

11 counties, 2 radars, one forecaster on the warning desk when it goes bad. This page is what that desk is looking at, plus the nets that feed it.

📺 Wall mode #wy-wx

1 active · 0 warnings

NWS checked 11:28 PM

Freeze WatchSevere · NPWRIW · until Fri 3:00 PM
Southwest Bighorn Basin; Southeast Bighorn Basin; Northeast Johnson County; Southeast Johnson County; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Rock Springs and Green River; Flaming Gorge; East Sweetwater County

Radar

NWS RIDGE · base reflectivity · last hour

Deeper look: KRIW interactive ↗ · KRIW at College of DuPage ↗ · KBLX interactive ↗ · KBLX at College of DuPage ↗ - velocity, correlation coefficient and every tilt.

Satellite

GOES-East · NR sector · GeoColor

NOAA STAR · updates every 5 min · all bands ↗

SPC outlook · day 1

categorical

Marginal → Slight → Enhanced → Moderate → High · day 2 ↗ · mesoscale discussions ↗

Reports taken by this office today

0 · SPC preliminary

No spotter reports logged by RIW so far today (UTC).

Cameras near the office

none listed yet

No cameras listed near Riverton yet. Know one?

Radar tells you what the storm is doing; these tell you what it looks like. Pictures open at their source - ODOT and the Mesonet allow linking, not republishing.

SKYWARN & weather nets for this office

Suggest or fix one →

No net is listed for NWS Riverton yet. If you know the repeater and who runs it, suggest it - the state coordinator checks it and it shows up here and on the state hub. Never guess a frequency from memory; a wrong one during a warning is worse than none.

NOAA Weather Radio in this area

17 transmitters · this office’s first, neighbours after

162.525 MHz KJY75 · Kemmerercovers Lincoln · 300 W · NWS Riverton

162.525 MHz KWN39 · Jacksoncovers Teton (ALL) · 300 W · NWS Riverton

162.550 MHz KXI34 · Rock Springscovers Sweetwater (CENTRAL/W) · 300 W · NWS Riverton

162.400 MHz WNG563 · Codycovers Big Horn, Park · 300 W · NWS Riverton

162.525 MHz WNG568 · Worlandcovers Big Horn, Washakie · 300 W · NWS Riverton

162.475 MHz WNG569 · Aftoncovers Lincoln · 300 W · NWS Riverton

162.500 MHz WNG573 · Thermopoliscovers Fremont (East), Hot Springs · 300 W · NWS Riverton

162.550 MHz WNG662 · Kayceecovers Johnson · 300 W · NWS Riverton

162.450 MHz WNG667 · Grant Villagecovers Park, Teton · 300 W · NWS Riverton

162.500 MHz WNG679 · Pinedalecovers Sublette · 300 W · NWS Riverton

162.425 MHz WNG686 · Elk Plazacovers Park, Teton · 300 W · NWS Riverton

162.450 MHz WNG723 · Duboiscovers Fremont · 300 W · NWS Riverton

162.400 MHz WXM47 · Caspercovers Converse, Natrona · 1000 W · NWS Riverton

162.475 MHz WXM61 · Landercovers Fremont (E 2/3) · 300 W · NWS Riverton

162.425 MHz KXI37 · Rawlinscovers Carbon (West 2/3), Sweetwater (East 1/3) · 300 W · NWS Cheyenne

162.500 MHz WXL63 · Bear Lakecovers Lincoln (SW 1/3) · 50 W · NWS Salt Lake City

162.475 MHz WXM46 · Sheridancovers Campbell, Johnson, Sheridan · 500 W · NWS Billings

What to report, and where

Size charts and the full guide →

🌪️ Tornado, funnel, wall cloud

·Tornado on the ground (say if you see debris)
·Funnel cloud - rotating, not touching down
·Wall cloud, especially a rotating one
·Where it is relative to you, and which way it's moving

🧊 Hail

·The largest stone, compared to a coin or ball (chart below)
·1″ (quarter) is the severe threshold - smaller is still worth a report to most offices
·How long it fell and whether it's covering the ground

💨 Wind

·Measured gusts of 40 mph+; 58 mph is severe
·Damage: trees down, limbs bigger than your arm, roof or structure damage, power lines
·Say whether it was measured or estimated

🌊 Flooding

·Water over a road, especially moving water
·Creeks and rivers rising fast or out of their banks
·Rainfall of 1″ or more in an hour if you have a gauge

❄️ Winter

·Snowfall of 1″ an hour or more, and totals
·Freezing rain and ice accumulation on wires and trees
·Visibility under ¼ mile, blowing and drifting

🚫 Not this

·Lightning and thunder on their own
·Rain that isn't causing flooding
·Ordinary dark clouds, scud, or clouds that only look scary

1 · The net, if one is up
When the office activates SKYWARN, a net control on the local repeater takes reports in a set format and relays them straight to the forecaster. Listen first, check in when asked, keep it short: who, what, where, when.
2 · The office directly
No net running? Every office has a spotter line or online report form on its SKYWARN page - for you that’s NWS Riverton. Trained spotters get the number in class; anyone can use the form.
3 · Tell the room here
/report hail quarter · 71st & Memorial in #wy-wx puts it in front of everyone watching the state. It does not reach the NWS - do 1 or 2 for that.

Counties served by NWS Riverton · 11

WYC003 Big Horn

WYC013 Fremont

WYC017 Hot Springs

WYC019 Johnson

WYC023 Lincoln

WYC025 Natrona

WYC029 Park

WYC035 Sublette

WYC037 Sweetwater

WYC039 Teton

WYC043 Washakie