accurate and reliable forecasts and live coverage across the WHOLE U.S.
Read SPC outlooks in two parts: the percent is the chance of that hazard near you, while CIG tells you how intense it could get if it happens.
Lightning and heavy rain can still happen.
One or two storms may briefly turn severe.
More than a few storms could be severe.
Severe storms are more organized or intense.
Significant severe weather is likely.
Widespread, intense severe weather is expected.
Tornado: EF2+ possible. Wind: 74+ mph gusts possible. Hail: 2 inch or larger hail possible.
Tornado: EF3+ possible. Wind: bow echo or derecho possible. Hail: giant hail around 3.5 inches or larger possible.
Tornado: EF4+ possible. Wind: derecho-level wind damage possible. Hail: SPC does not use CIG3 for hail.
| % | <CIG1 | CIG1 | CIG2 | CIG3 |
|---|---|---|---|---|
| 60% | ENH | HIGH | HIGH | HIGH |
| 45% | ENH | MDT | HIGH | HIGH |
| 30% | ENH | MDT | HIGH | HIGH |
| 15% | ENH | ENH | MDT | MDT |
| 10% | SLGT | ENH | ENH | ENH |
| 5% | SLGT | SLGT | ENH | -- |
| 2% | MRGL | MRGL | SLGT | -- |
| % | <CIG1 | CIG1 | CIG2 | CIG3 |
|---|---|---|---|---|
| 90% | ENH | MDT | HIGH | HIGH |
| 75% | ENH | MDT | HIGH | HIGH |
| 60% | ENH | MDT | HIGH | HIGH |
| 45% | ENH | ENH | MDT | HIGH |
| 30% | SLGT | ENH | ENH | -- |
| 15% | SLGT | SLGT | ENH | -- |
| 5% | MRGL | MRGL | SLGT | -- |
| % | <CIG1 | CIG1 | CIG2 |
|---|---|---|---|
| 60% | ENH | MDT | MDT |
| 45% | ENH | ENH | MDT |
| 30% | SLGT | ENH | ENH |
| 15% | SLGT | SLGT | ENH |
| 5% | MRGL | MRGL | SLGT |
| % | <CIG1 | CIG1 | CIG2 |
|---|---|---|---|
| 60% | ENH | MDT | MDT |
| 45% | ENH | ENH | MDT |
| 30% | SLGT | ENH | ENH |
| 15% | SLGT | SLGT | ENH |
| 5% | MRGL | MRGL | SLGT |
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The live nationwide county-level outage feeds are not exposed as a stable free public API, so this page links straight to the public tracker instead of scraping a blocked service.