nimbus

The skywatch nimbus subcommand pulls convective hazard data from the Storm Prediction Center (SPC) and NOAA Hazard Mapping System (HMS). All commands support --format json|text.

Commands

Command	Description	Example
outlook	SPC categorical convective outlook for day 1, 2, or 3	skywatch nimbus outlook 1 --at 40.688,-74.174
storms	Recent SPC storm reports (tornado / wind / hail)	skywatch nimbus storms --type tornado --near 40.688,-74.174 --radius 100
convection	Active NWS convective warnings and watches at a point	skywatch nimbus convection 40.688 -74.174
smoke	HMS satellite-detected smoke plumes covering a point	skywatch nimbus smoke 40.688 -74.174

outlook

Fetch the SPC categorical outlook (Marginal / Slight / Enhanced / Moderate / High) for day 1, 2, or 3:

# All outlook polygons for day 1
skywatch nimbus outlook 1

# Covering outlook for a specific point (highest risk level)
skywatch nimbus outlook 1 --at 40.688,-74.174

# Day 2 and day 3 outlooks
skywatch nimbus outlook 2
skywatch nimbus outlook 3

--at LAT,LON returns only the polygon covering the point, choosing the highest risk level when multiple polygons overlap.

storms

Fetch recent SPC storm reports:

# All storm reports for today
skywatch nimbus storms

# Filter by type
skywatch nimbus storms --type tornado
skywatch nimbus storms --type wind
skywatch nimbus storms --type hail

# Filter by proximity
skywatch nimbus storms --near 40.688,-74.174 --radius 100

# Specific date and type
skywatch nimbus storms --date 20260430 --type tornado

--date format is YYYYMMDD. Default is today. --radius defaults to 100 NM when --near is specified.

convection

Check active NWS radar-driven warnings and watches at a coordinate:

skywatch nimbus convection 40.688 -74.174

Default events checked: Tornado Warning, Severe Thunderstorm Warning, Flash Flood Warning, Tornado Watch, Severe Thunderstorm Watch.

To check specific event types:

skywatch nimbus convection 40.688 -74.174 --events "Tornado Warning,Severe Thunderstorm Warning"

smoke

Check for HMS satellite-detected smoke plumes at a coordinate:

skywatch nimbus smoke 40.688 -74.174

Reports any smoke plumes detected by NOAA’s Hazard Mapping System that cover the given point, including density classification (light / medium / heavy) where available.