12b1 extratropicaltransition exercise group3-ukmet-part1 · initial situation 00 utc 22 nd nhc...

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Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central Pressure: 970 mb Movement: NNE 12 kt Structure 64 KT....... 35NE 35SE 30SW 30NW 50 KT....... 70NE 90SE 60SW 60NW 34 KT.......180NE 200SE 200SW 175NW 12 FT SEAS..400NE 300SE 350SW 350NW

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Page 1: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Initial Situation00 UTC 22nd

NHC Operational Analysis

03 UTC 22nd

Location: 31.8°N 56.3°W

Intensity: 75 kt

Central Pressure: 970 mb

Movement: NNE 12 kt

Structure64 KT....... 35NE 35SE 30SW 30NW

50 KT....... 70NE 90SE 60SW 60NW

34 KT.......180NE 200SE 200SW 175NW

12 FT SEAS..400NE 300SE 350SW 350NW

Page 2: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Phase Space Diagram 1UKMET Analysis through 00 UTC 22nd

Page 3: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Phase Space Diagram 2UKMET Analysis through 00 UTC 22nd

Page 4: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Current Status

• How would you describe the cyclone at this point based on the phase space analysis?

Page 5: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

UKMET Model ForecastsModel Initialized at 00 UTC 22nd

Page 6: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Analysis Valid at 00 UTC 22nd

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 7: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 12 UTC 22nd

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 8: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 00 UTC 23rd

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 9: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 12 UTC 23rd

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 10: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 00 UTC 24th

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 11: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 12 UTC 24th

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 12: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 00 UTC 25th

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 13: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 12 UTC 25th

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 14: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

Forecast Valid at 00 UTC 26th

MSLP and 10-m winds 850-mb rel vort and winds

MSLP, 500-mb height, abs vort and winds MSLP and 250-mb winds

Page 15: 12b1 ExtratropicalTransition Exercise Group3-UKMET-Part1 · Initial Situation 00 UTC 22 nd NHC Operational Analysis 03 UTC 22nd Location: 31.8°N 56.3°W Intensity: 75 kt Central

UKMET Forecast

• When does ET begin?

• When does ET end?