The National Weather Service and federal forecasters raised the alarm Thursday as an organized area of thunderstorms roughly 900 miles east of the Big Island showed signs it could quickly strengthen and threaten Hawaii this weekend. Because the circulation has not fully formed, forecasters say uncertainty about the storm’s track and intensity remains unusually high.
What forecasters are doing now
Officials have assigned the system the designation "Potential Tropical Cyclone One-C", a classification introduced in 2017 that allows meteorologists to issue watches and warnings for disturbances expected to threaten land before they are officially named as tropical cyclones. The Central Pacific Weather Service Unit noted Wednesday that the circulation was not yet sufficiently defined to be called a tropical cyclone.
The move to label the system Potential Tropical Cyclone One-C appears to be a first for the Central Pacific, giving forecasters expanded tools to alert residents even as the storm remains in a formative stage.
Unusual threat timeline and uncertainty
Federal emergency staff in Kauai described the situation as atypical for Hawaii, where systems usually develop well to the east and provide forecasters more lead time. David Hitzl, an Emergency Response Specialist with the National Oceanic and Atmospheric Administration stationed on Kauai, said the rapid-onset nature of this disturbance complicates preparedness.
"Yesterday, I told my group that everything was on the table," Hitzl said, "from this is not going to develop, it's going to go south of us, not impact us, all the way to Category 3 (hurricane) right over the islands."
Most forecast models since then have reduced peak-intensity projections, with several predicting the system would at most reach Category 1 strength — winds of at least 74 mph — before a possible landfall on the Big Island sometime Saturday. Still, forecasters emphasize that intensity remains a wildcard given the storm’s current state and the ocean conditions it will encounter.
Ocean temperatures and intensity potential
Forecasters point to sea-surface temperatures south of Hawaii that are running above recent climatological averages as one factor that could support quicker strengthening. Observations show waters in that region are about 0.5 to 1.5 degrees Celsius above the 1991–2020 mean, a condition that can favor intensification if other atmospheric factors are also conducive.
| Metric | Current observation |
|---|---|
| Distance from Big Island | ~900 miles east |
| Forecast window | Possible landfall Saturday |
| Model peak | Category 1 in most runs |
Local impacts to watch for
Even if the system does not strengthen into a major hurricane, residents and visitors should prepare for disruptive weather. Potential impacts include:
- Heavy, flooding rain that could produce flash floods and mudslides.
- Damaging wind gusts, especially if the system reaches tropical-storm or hurricane strength.
- High surf and dangerous rip currents along exposed shorelines.
Emergency managers and the National Weather Service recommend that island residents monitor forecasts closely, secure loose outdoor items, and review evacuation and family preparedness plans. Because forecasts could change rapidly, officials urged people not to wait until the last moment to act.
How forecasters are framing the risk
Meteorologists characterize this episode as a low-certainty, high-impact event: the system’s future is far from certain, but if it develops, it could bring significant impacts on short notice. That balance has driven the unusual choice to classify the disturbance as a potential tropical cyclone so warnings can be issued preemptively.
With the situation evolving, island communities should expect updates from the National Weather Service, the Central Pacific Hurricane Center, and local emergency management agencies. Officials will refine watches and warnings as the circulation organizes or weakens and as forecast model guidance converges.
Residents and visitors can find the latest advisories, watches and warnings at the National Weather Service website and through county emergency management channels. Given the fast-changing nature of this threat, authorities recommend checking official sources frequently through Friday and into the weekend.
State and county emergency managers have not yet issued mandatory evacuations, but the designation and forecasts make clear that conditions could change quickly, requiring rapid community response.
WE NEWS will continue to provide updates as forecasters and emergency officials release new guidance on the system’s track, intensity and potential impacts across the Hawaiian Islands.
