Jonathan Vigh Profile picture
I’m a Christ-loving PhD meteorologist working at @NCAR_Science/@NCAR_RAL on hurricanes and weather/climate-driven risk. Wildfire survivor. Opinions are my own.
Sep 23 18 tweets 9 min read
#HurricaneRiskCalculator is showing some eye-popping wind probabilities for potential #Hurricane #Helene for #Tallahassee, including Cat 1 (50%); Cat 3 (21%); and Cat 5 (1.7%).

BUT - should these be believed?

Let's delve into the forecast scenario!

@GovRonDeSantis

1/ Image 2/ The wind speed probabilities that drive the location-based output of #HurricaneRiskCalculator () come from Forecasts of Hurricanes using Large-ensemble Outputs (#FHLO), a wind hazard model that considers the flow-dependent uncertainty of the atmosphere using global ensembles.

It's important to note that #PTC9 hasn't actually formed yet. Until it becomes a tropical depression with a well-defined wind center, there will be more uncertainty than normal.

Here are the GEFS ensemble member tracks (red) and a 1000 physically-plausible synthetic tracks that have been bootstrapped up from the GEFS ensemble tracks. There is still considerable spread at this point.wxrisk.ioImage
Oct 18, 2023 13 tweets 3 min read
As promised, here's an update on my experience now that I'm 36 hours past my #Novavax vaccination. All in all, it's been very good.

In this thread I'll compare the side effects I experienced from @Novavax to my previous #Moderna vaccinations.

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2/ First, the shot itself and arm soreness. I won't lie - the initial shot stings quite a bit, more than a flu shot. My arm was moderately sore by later in the day, but not as bad as the deep arm soreness I had after my Moderna shots.
May 16, 2022 4 tweets 3 min read
@NWSAlbuquerque @Bewickwren I understand the current constraints, but this is where I'd suggest a change is needed: the public have a right to be alerted if there's an evacuation order anywhere in their county/S.A.M.E area. Such an alert could simply be a general "There's a wildfire in X County ..."

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@NWSAlbuquerque @Bewickwren 2/ "... and local evacuations have been issued. Please go to <website of agency having jurisdiction> to get more information."

That's all that's needed. People just need to know and they have to have a way to know when all other comms are out (e.g., internet, cell phones,