Every way in
- View
A report is only useful if it arrives in time and attributable. Nine ways in, each trading speed against richness against reliability.
In this lesson you will
- Name at least six channels into a forecast office and state a strength and a limitation of each.
- Explain why spotter hotline numbers are distributed at training rather than published.
- Distinguish public channels from partner-only ones.
- State that no official nationwide NWS spotter app exists, and identify what the agency offers instead.
Two properties decide everything
A report has to arrive in time to be acted on, and it has to be attributable so the office can weigh it. Every channel below trades those two against each other and against a third thing, reliability, which only matters on the day it fails and matters enormously then. Lesson 6 is about that day.
The direct channels
- Telephone
- The fastest, and the only genuinely two-way channel: the forecaster can ask you a question. Offices run a spotter line for exactly this. Needs a working network, and it occupies a human being at the busiest moment of their shift, so it is for things that cannot wait.
- The online storm report form
- Structured fields, so it prompts you for the things module 7 said to include and you cannot forget the time. There is a national form and most offices run their own. Slower than the phone, one-way, and it works from a phone browser.
- Per office. Poor for urgent traffic and genuinely good for the thing that arrives afterwards: photographs, video, a measured total, a correction to something you called in earlier.
- Social media
- Offices do monitor their own accounts and do act on what they find. It is a real channel and it is the least reliable one, because it competes with everything else in the feed at the moment the office is busiest. Good for photographs, weak for anything time-critical.
It is not a privilege and it is not secrecy. It is line capacity. A published number becomes a public inquiry line within one severe weather event, and then the trained spotter with the tornado cannot get through. The number is given out at training to people who will use it for its purpose. This course does not print any office phone number, and neither should any material you produce.
The relayed channels
- An amateur radio net
- You transmit to a net control station, which relays to the office, often from a volunteer-staffed amateur station inside the forecast office itself. Slower than the phone by one human step, and it keeps working when the mobile network is gone. Lessons 3 and 4.
- The emergency operations center
- Your county emergency manager is frequently the local hub for spotters, and has their own path to the office. Adds a step, and puts your report in front of the people who will act on it locally as well as the people forecasting it. Lesson 5.
A relayed report loses a little time and gains something: it has been heard by somebody who can put it in context, and it reaches more than one destination. The net is also the only channel in this lesson that improves under load, because a disciplined net gets faster when it is busy while every other channel gets slower.
Two things on the list that are not report channels
| What it is | What it is not |
|---|---|
| mPING, a research app from a national laboratory and a university. Crowd-sourced observations, mostly precipitation type. | A severe weather report line. Reports are anonymous, rate-limited, not quality controlled beyond basic validation, and do not reach the partner chat. The project itself says they are considered less trusted than trained spotter reports. |
| CoCoRaHS, a volunteer precipitation measurement network. Daily rain, hail and snow totals, measured properly. | A real-time severe weather channel. It is a climatological record and a very good one. It is not where you report a tornado. |
Both are genuinely valuable and both are the wrong tool for urgent severe weather. Using them for that is a common and understandable mistake, and the report goes somewhere that nobody is watching in the next ten minutes.
NWSChat is the chat service connecting forecast offices with their core partners: emergency management, public safety and the media. It moved to a Slack-based system in 2023. It is not a public report intake and never has been. Module 7 lesson 6 lists it among the channels a spotter cannot use, alongside eSpotter, which was discontinued in 2014.
There is no official NWS spotter app
This surprises people and it is worth being precise about, because the claim that one exists circulates constantly. Look at what the agency actually lists on its reporting pages: a web form, a telephone number, an email address, and social media. The only app it points at is the research app above, which belongs to a laboratory rather than to the Weather Service.
No single NWS sentence says "there is no spotter app". The conclusion comes from every reporting page listing the same four things and no app. That is a sound inference and it is not a quotation, and this course marks the difference. If the agency releases one, this lesson is wrong and should be rewritten.
What this means practically: an app on your phone that takes weather reports is somebody's app, not the government's. That includes this one. Lesson 6 is about exactly where a third-party app sits relative to the official channels, and the answer is alongside them, never instead of them.
How many spotters are there
A small case study in reading sources carefully, on a question you would think had an answer. Some NWS pages say nearly 290,000 trained spotters nationally. Others say between 350,000 and 400,000. Both are the agency's own material.
The figures probably count different things, and possibly at different times: who is currently trained against who has ever been trained, and by which offices. The honest answer is somewhere in the high hundreds of thousands, and the sources disagree. A course about the reliability of reports should model what to do when sources conflict, which is to say so rather than to pick the one you prefer.
Check yourself
A tornado is on the ground and the mobile network in your area is congested to the point that calls are failing. Which of these is most likely to get the report through?
- An amateur radio net, if you are on one, because it does not use the mobile network at all
- The national online storm report form, which is lighter than a voice call
- Posting to the office social media account, which is monitored during severe weather
- An mPING report, which is designed for exactly this
Hint
Three of these four depend on the same piece of infrastructure.
Answer
An amateur radio net, if you are on one, because it does not use the mobile network at all
The form, social media and any app all need the mobile data network that is failing. Amateur radio does not use it, which is the entire reason the nets still exist. A short data submission genuinely does often succeed where voice fails, so the second option is the best of the remaining three, and mPING is a research app rather than a severe weather channel.