Post-Tropical Cyclone Mun (04W) - Tropical Cyclone Advisory #13 (FINAL): 1200 UTC 7 July 2025

…Mun degenerates into a remnant low over the northern Pacific… …This is the last advisory…

Current storm information:

• Position: 36.6°N 148.0°E

• Movement: NNW at 10 knots (20 km/h)

• Intensity: 30 knots (55 km/h)

• Central pressure: 1002 hPa

Trend:

• The post-tropical cyclone is forecast to weaken during the next 24 hours.

Watches and warnings:

• There are no land-based watches or warnings in effect.

Hazards affecting land:

• None.

Discussion:

All of the convection associated with Mun dissipated fairly shortly after the previous advisory, and Mun now lies as a fully exposed swirl of low clouds. Recent scatterometer data also indicates that Mun is no longer producing winds of tropical storm force. Given that convection is unlikely to redevelop given Mun being located over SSTs of about 22°C and under about 40 kts of northeasterly shear, Mun is now a post-tropical remnant low with 30 kt winds.

The remnant low is forecast to continue moving generally northward during the next day or so before merging with an extratropical low near the Kuril Islands on Tuesday.

This is the last advisory on Mun.

Forecast positions and maximum winds

• 00 hrs: 36.6°N 148.0°E – 30 kts Post-tropical/remnant low

• 12 hrs: 39.3°N 148.6°E – 30 kts Post-tropical/remnant low

• 24 hrs: 42.6°N 152.6°E – 30 kts Post-tropical/remnant low

• 48 hrs: Absorbed by extratropical low