Public data snapshot
Active weather alerts, as of one moment
335 active National Weather Service alerts when this snapshot was taken. It shows what the snapshot contains and what it does not tell you. It is not a delay prediction.
Read this first
This is a snapshot, not a live feed. Alerts expire and new ones are issued every hour. It is not a forecast for any route, and it is not a prediction that any load will be late. We use it only as dated background when a delay explanation is disputed.
Counting rule. Alerts are counted by the state of the National Weather Service office that issued them, because the feed lists zones and counties without a state code. That is an approximation. It does not measure how much weather affects any road. Alaska and Hawaii are shown as insets.
By event type
follows filtersSnapshotNWS active alertsData period: alerts active at retrievalRetrieved Oct 8, 2026, 12:25 UTCretrieved Oct 8, 2026
Alerts where the freight is
The 15 states with the most truck tonnage in the 200 largest flows of the Freight Analysis Framework, next to the number of alerts their NWS offices had active in this snapshot.
| State | Thousand tons in and out, 2022 | Land and coastal alerts | Marine alerts |
|---|---|---|---|
| Pennsylvania | 217.2 | 0 | 0 |
| Illinois | 201.9 | 0 | 0 |
| Ohio | 170.0 | 0 | 0 |
| Texas | 157.8 | 1 | 3 |
| Indiana | 151.8 | 0 | 0 |
| Iowa | 119.7 | 0 | 0 |
| California | 116.0 | 6 | 0 |
| Wisconsin | 115.1 | 0 | 0 |
| New York | 111.8 | 0 | 2 |
| Georgia | 110.2 | 0 | 0 |
| Missouri | 98.4 | 0 | 0 |
| Minnesota | 95.7 | 0 | 0 |
| Michigan | 95.3 | 0 | 2 |
| North Carolina | 94.9 | 1 | 0 |
| New Jersey | 92.6 | 0 | 0 |
Alerts are counted by the state of the issuing NWS office, as on the map above, which is an approximation. A large state has several offices. Freight tonnage is modeled 2022 history. Together they show where weather could matter for a lot of freight. They do not show delay.
What this number means
- An alert count is how many separate warnings, watches and advisories were active at one moment. One storm can produce dozens.
- Severity and event type matter more than the count: a dense fog advisory and a winter storm warning are very different for a trailer.
- Nothing here says your truck will be late.
What to do about it
- Check alerts for the states you run before dispatch, on the National Weather Service site, and again at each stop.
- If an alert is in force on a route, tell the broker and write down the time. A dated message is the evidence if a delay is disputed.
- Price the day. The calculator shows what a weather hold costs in the states you pick.
Cost of a hold
enter numbers
- States picked
- Alerts in the snapshot
Formula: trucks x cost per truck-day x days. The alert count is context from one moment. Example numbers are invented placeholders.
What the snapshot can and cannot support
- It can show that an official alert existed for an area on a date, which is useful if a receiver blames a delay on weather and you want a dated reference next to your own gate times.
- It can show which event types dominate a snapshot, for example how much of it is marine.
- It cannot show that weather delayed a particular truck. Only your own records can.
- It cannot show conditions on a road, a route or a lane. Alert zones are not routes.
- It cannot predict anything. Every alert shown has an expiry time and many have already ended.
Highest severities in this snapshot, by count: Moderate 165, Minor 82, Severe 67, Extreme 17, Unknown 4.
Most frequent land and coastal event types
| Event | Alerts |
|---|---|
| Tropical Storm Warning | 15 |
| Dense Fog Advisory | 7 |
| Tropical Cyclone Local Statement | 6 |
| Coastal Flood Advisory | 5 |
| Air Quality Alert | 4 |
| Fire Weather Watch | 4 |
| Tropical Storm Watch | 4 |
| Flood Watch | 3 |
Questions
Why are so many alerts marine?
Many NWS products cover coastal waters and the Great Lakes, such as gale warnings and small craft advisories. The map defaults to land and coastal products and lets you include marine ones.
Will you add a live feed?
Not for now. A live feed would need a refresh schedule, monitoring and a clear rule for what it may be used for. Until that exists this stays a dated snapshot.
Does this feed into the audit?
Only as context beside a finding, with its date and limits. It never changes an amount.
Who owns this data?
It is published by the National Weather Service. Nothing here implies NWS endorsement. See the provenance box for source and retrieval time.
See what your last 20 loads show.
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