SKYWARN · Colorado
NWS Boulder BOU
22 counties, 4 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.
2 active · 0 warnings
NWS checked 11:27 PM- Freeze WatchSevere · NPWBOU · until Fri 3:00 PMLarimer County Below 6000 Feet/Northwest Weld County; Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County; North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County; Elbert/Central and East Douglas Counties Above 6000 Feet; Northeast Weld County; Central and South Weld County; Morgan County; Central and East Adams and Arapahoe Counties; North and Northeast Elbert County Below 6000 Feet/North Lincoln County; Southeast Elbert County Below 6000 Feet/South Lincoln County; Logan County; Washington County; Sedgwick County; Phillips County
- Winter Weather AdvisoryModerate · WSWBOU · until Thu 12:00 PMWest Jackson and West Grand Counties Above 9000 Feet; South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet; South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet
Radar
NWS RIDGE · base reflectivity · last hour
Deeper look: KFTG interactive ↗ · KFTG at College of DuPage ↗ · KPUX interactive ↗ · KPUX at College of DuPage ↗ - velocity, correlation coefficient and every tilt.
SPC outlook · day 1
categorical
Marginal → Slight → Enhanced → Moderate → High · day 2 ↗ · mesoscale discussions ↗
Reports taken by this office today
0 · SPC preliminaryNo spotter reports logged by BOU so far today (UTC).
Cameras near the office
none listed yetNo cameras listed near Boulder 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 Boulder 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.
Citizen weather stations nearby
12 reporting within 200 mi · APRS, last 2 h| Station | Temp | Hum | Wind | Gust | Rain 24 h | Pressure | Dist |
|---|---|---|---|---|---|---|---|
| WD4IXD-WX | 39° | 79% | 5 SSE | 15 | 0.48" | 1017.9 | 15 mi |
| W1CAT | 45° | 79% | 1 NE | 3 | 0.96" | - | 34 mi |
| KF5WCW-1 | 47° | 84% | 4 NW | 7 | 0.65" | - | 35 mi |
| KJ5PEC-13 | 48° | 50% | 6 SE | 7 | - | 1019.0 | 49 mi |
| WB7AAV | 47° | 92% | 3 NE | 8 | 0.18" | 1016.3 | 51 mi |
| N0HEQ | 46° | 96% | 3 ENE | 4 | - | 1019.2 | 53 mi |
| KF0TNT | 42° | 94% | 2 NE | 5 | 0.02" | 1018.4 | 59 mi |
| GW4003 | 46° | 93% | 5 N | 8 | 0.60" | 1017.3 | 59 mi |
| W1REE | 44° | 96% | 1 N | 1 | 0.16" | 1018.7 | 65 mi |
| WB0YAF-8 | 45° | 74% | calm | - | - | 1016.6 | 66 mi |
| KE8FEN-13 | 47° | 96% | 4 SE | 8 | - | 1008.1 | 66 mi |
| KG5TTF | 46° | 86% | calm | - | 0.02" | 1019.7 | 67 mi |
Heard on APRS-IS, receive only. These are privately owned stations reporting themselves — treat them as a hint about what the air is doing between the official sites, not as verified observations. Wind and gust are mph. See them on the map →
NOAA Weather Radio in this area
13 transmitters · this office’s first, neighbours after162.550 MHz KEC76 · Denvercovers Adams, Arapahoe, Arapahoe (WESTERN), Arapahoe (CENTRAL), Arapahoe (EASTERN), Broomfield, Clear Creek, Denver, Douglas, Elbert (NW 1/4), Gilpin, Jefferson, Larimer, Park (EASTERN), Weld (SOUTHERN AND CENTRAL) · 330 W · NWS Boulder
162.425 MHz KJY84 · Antoncovers Washington · 300 W · NWS Boulder
162.525 MHz KWN40 · Fort Morgancovers Logan, Morgan, Washington · 300 W · NWS Boulder
162.450 MHz WNG550 · Franktowncovers Adams, Arapahoe, Arapahoe (WESTERN), Arapahoe (CENTRAL), Arapahoe (EASTERN), Boulder, Broomfield, Clear Creek, Denver, Douglas, Gilpin, Jefferson, Park (EASTERN), Weld (SOUTHERN AND CENTRAL) · 300 W · NWS Boulder
162.400 MHz WNG737 · Dilloncovers Summit · 300 W · NWS Boulder
162.450 MHz WWH32 · Boyerocovers Elbert (Eastern), Lincoln · 100 W · NWS Boulder
162.500 MHz WXJ45 · Deer Trailcovers Adams, Arapahoe, Arapahoe (WESTERN), Arapahoe (CENTRAL), Arapahoe (EASTERN), Boulder, Broomfield, Clear Creek, Denver, Douglas, Gilpin, Jefferson, Larimer (SOUTHERN), Park (EASTERN), Weld (SOUTHERN AND CENTRAL) · 100 W · NWS Boulder
162.400 MHz WXM50 · Greeleycovers Larimer, Weld · 300 W · NWS Boulder
162.475 MHz WXM51 · Mead/Longmontcovers Adams, Arapahoe, Boulder (ALL), Boulder (NORTHWEST), Boulder (NORTHEAST), Boulder (SOUTHWEST), Boulder (SOUTHEAST), Broomfield, Denver, Larimer (SOUTHERN 1/2), Weld (SOUTHWEST 1/4) · 100 W · NWS Boulder
162.400 MHz WXM53 · Sterlingcovers Logan, Phillips, Sedgwick, Weld (NORTHEAST 1/4) · 300 W · NWS Boulder
162.450 MHz WXM92 · Fort Collins/Aultcovers Larimer, Weld · 300 W · NWS Boulder
162.500 MHz WZ2544 · North Cottonwoodcovers Grand · 300 W · NWS Boulder
162.525 MHz KWN56 · Steamboat Springscovers Grand (WESTERN 1/2), Jackson, Moffat (EASTERN 1/4), Routt, Summit (NORTHERN 2/3) · 300 W · NWS Grand Junction
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 Boulder. Trained spotters get the number in class; anyone can use the form.
- 3 · Tell the room here
/report hail quarter · 71st & Memorial in #co-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 Boulder · 22
COC001 Adams
COC005 Arapahoe
COC013 Boulder
COC014 Broomfield
COC019 Clear Creek
COC031 Denver
COC035 Douglas
COC039 Elbert
COC047 Gilpin
COC049 Grand
COC057 Jackson
COC059 Jefferson
COC069 Larimer
COC073 Lincoln
COC075 Logan
COC087 Morgan
COC093 Park
COC095 Phillips
COC115 Sedgwick
COC117 Summit
COC121 Washington
COC123 Weld