Anomaly fields are invaluable for determining various events like extratropical transition.
The 500-hPa temperature anomaly (vs. climatology) shows the trough and Fiona, but it's not a merger. More like a capture.
The 500-hPa temperature anomaly (vs. climatology) shows the trough and Fiona, but it's not a merger. More like a capture.
The warm-core sticks around until the bitter end.
850 hPa temperature anomaly. #HurricaneFiona
The tropical warm-core will survive, remain coherent, up until it doesn't, then it blinks/poofs as midlatitude air wipes it out.
850 hPa temperature anomaly. #HurricaneFiona
The tropical warm-core will survive, remain coherent, up until it doesn't, then it blinks/poofs as midlatitude air wipes it out.
Sequence of 4 maps of 500 hPa height anomaly.
Hurricane Fiona retrogrades into the well of the trough but deepens considerably and matches the scale.
Extreme extratropical transition (EET)
Hurricane Fiona retrogrades into the well of the trough but deepens considerably and matches the scale.
Extreme extratropical transition (EET)
Post-tropical Fiona could be more intense than it was as a hurricane, at least measured by barometric pressure. That would be an amazing feat. 115 mph wind gusts over Nova Scotia, Friday.
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