Tropical Storm Bertha
North Atlantic • 40 mph • 1006 hPa
As of Sunday, July 19, the scheduled downtime for PolarWx is complete. Over the next week or two, some model suites (primarily from the model viewer) will be brought down for restructuring ahead of the new PolarWx launch.
Due to increased tropical activity, disruptions to the real-time tropical cyclone page will be as minimal as possible.
I apologize again for any inconvenience and look forward to having the new PolarWx live very soon!
| Max Wind | |
| Min Pres | |
| Movement |










| Hours | Change | Percentile Rank |
|---|
| Hours | Start Wind | End Wind | Percentile Rank |
|---|
| Hour | Forecast | Percentile Rank |
|---|




















| Hours | Change | Percentile Rank |
|---|---|---|
| 0–24 hr | –5 kt | Normal Range |
| 12–36 hr | –10 kt | ≤ 25th Percentile |
| 24–48 hr | –5 kt | Normal Range |
| 48–72 hr | –10 kt | Normal Range |
| 72–96 hr | –5 kt | Normal Range |
| 96–120 hr | –5 kt | Normal Range |
| Hours | Start Wind | End Wind | Percentile Rank |
|---|---|---|---|
| 0–24 hr | 75 kt | 70 kt | Normal Range |
| 12–36 hr | 75 kt | 65 kt | Normal Range |
| 24–48 hr | 70 kt | 65 kt | Normal Range |
| 48–72 hr | 65 kt | 55 kt | Normal Range |
| 72–96 hr | 55 kt | 50 kt | Normal Range |
| 96–120 hr | 50 kt | 45 kt | Normal Range |
| Hour | Forecast | Percentile Rank |
|---|---|---|
| 24 | 70 kt | Normal Range |
| 36 | 65 kt | Normal Range |
| 48 | 65 kt | Normal Range |
| 72 | 55 kt | Normal Range |
| 96 | 50 kt | Normal Range |
| 120 | 45 kt | Normal Range |











































