Tuesday Evening Update

Nana heading toward Belize

The Weather Situation
Per my tweet this morning, it was obvious from the satellite imagery that the disturbance was at least a tropical depression if not stronger. Nana was classified at 11 am as a tropical storm after the recon confirmed.

For more frequent updates: Twitter: https://twitter.com/richjohnsonwx

Current tropical weather
As of 5:00 PM EDT Nana was centered at 16.8 N / 79.3 W or about 425 miles east of Limon, Honduras. It was moving west 18 mph. Officially top sustained winds are estimated at 50 mph. Pressure was estimated at 1002 hPa (mb).

Tropical Weather Forecast:
Nana may become a hurricane before landfall Wednesday night in Belize. Rush to complete all necessary hurricane prepartions.

Tropicast: Visible Satellite

Wednesday Evening Update

Nana north of Honduras

The Weather Situation
Nana will make landfall tonight in eastern Belize. It is fighting northerly shear.

For more frequent updates: Twitter: https://twitter.com/richjohnsonwx

Current tropical weather
As of 4:00 PM CDT Nana was centered at 17.0 N / 85.9 W or about 155 miles ESE of Belize City, Belize. It was moving west 15 mph. Officially top sustained winds are estimated at 60 mph. Pressure was estimated at 999 hPa (mb).

Tropical Weather Forecast:
Nana will likely make landfall as a strong tropical storm. Today's wind shear has slowed the strengthening. There will be heavy rainfall, surge and tropical storm force winds near the center.

Tropicast: Visible Satellite

Thursday Morning Update

Nana heading inland

The Weather Situation
I was quite shocked to see that Nana up upgraded to hurricane strength just before landfall.... at a 994 mb pressure. It made landfall on the coast of Belize between Dangriga and Placencia at 1 am CDT. From the NHC discussion: "The plane has measured a peak 700-mb flight-level wind of 72 kt to the north of the center, and peak SFMR winds of 62 kt earlier this evening."

The correction factor is 90% at 700 mb.... so 72 knots = 82.85 mph x .9 = 74.6 mph. The sfmr reading of 62 knots = 71 mph. IMO this was a 70 mph tropical storm.

For more frequent updates: Twitter: https://twitter.com/richjohnsonwx

Tropicast: IR Satellite 1 am CDT


Tropicast: IR Satellite