NWS Sacramento STO
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.
1 active · 1 warning
NWS checked 11:28 PM- Red Flag WarningSevere · RFWSTO · until Fri 5:00 PMSierra Nevada of Tehama-Butte-Plumas Counties Between 1000-3000 ft; Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft; Northern Motherlode Between 1000-3000 ft; Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80; Sierra Nevada of Sierra-Nevada-Placer Counties Above 5000 ft Including Interstate 80; Central Motherlode Between 1000-3000 ft; Sierra Nevada of El Dorado and Amador Counties Between 3000-5000 ft Including Highway 50; Sierra Nevada of El Dorado-Amador-Northern Alpine Counties Above 5000 ft Including Highway 50; Southern Motherlode Between 1000-3000 ft; Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft; Sierra Nevada of Calaveras-Tuolumne-Southern Alpine Counties Above 5000 ft
Radar
NWS RIDGE · base reflectivity · last hour
Deeper look: KBBX interactive ↗ · KBBX at College of DuPage ↗ · KDAX interactive ↗ · KDAX 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 preliminaryCameras near the office
none listed yetRadar 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 →NOAA Weather Radio in this area
6 transmitters · this office’s first, neighbours afterWhat to report, and where
Size charts and the full guide →- ·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
- ·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
- ·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
- ·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
- ·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
- ·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 Sacramento. Trained spotters get the number in class; anyone can use the form.
- 3 · Tell the room here
/report hail quarter · 71st & Memorial in #ca-wx puts it in front of everyone watching the state. It does not reach the NWS - do 1 or 2 for that.