H U N T S V I L L E, A L A B A M A Severe Weather/Lightning: Operational Perspective Brian Carcione WFO Huntsville, Alabama.

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Presentation transcript:

H U N T S V I L L E, A L A B A M A Severe Weather/Lightning: Operational Perspective Brian Carcione WFO Huntsville, Alabama

H U N T S V I L L E, A L A B A M A Introduction Through improved modeling, research, etc., short/medium-range prediction of ingredients for severe convective storms has improved greatly –Severe weather: > 1” hail, > 58 MPH wind gusts, or tornadoes Bigger challenges persist in the “near” term (0-6 hr) SPC Day 4-8 Outlook issued 23 April 2011

H U N T S V I L L E, A L A B A M A Near-Term Overview Local severe weather operations boil down to anticipation and validation –Anticipation: how will things evolve/change? –Validation: are expected/current conditions valid/reasonable? Main questions during severe weather: –Where & when will storms develop? –How will storm impacts evolve, or how is environment evolving? –Which storms have the greatest chance of threatening life and property?

H U N T S V I L L E, A L A B A M A Near-Term Overview Models/analyses like the SPC Mesoanalysis site or HRRR/RAP are increasingly reliable and useful, but there are limitations (and always will be) –Anticipation, not validation Forecasters often seek a “sanity check” of environmental data, often looking at direct observations (balloon data, surface obs, etc.) –Validation, not anticipation

H U N T S V I L L E, A L A B A M A Where & when will storms develop? Indirect: –CIMSS NearCast Direct: –University of Alabama in Huntsville SATCAST –CIMSS Cloud Top Cooling SATCAST 1925 UTC CTC 1945 UTC

H U N T S V I L L E, A L A B A M A How will storm impacts evolve? CIMSS NearCast MODIS/VIIRS Air Mass RGB Assimilation of ABI data into NWP/analyses 16 May 2012 – 1930 UTC Multiple large hail reports UTC

H U N T S V I L L E, A L A B A M A Which storms have the greatest chance of threatening life/property? CIMSS Cloud Top Cooling Total Lightning Information –Pseudo-Geostationary Lightning Mapper –Earth Networks Total Lightning Network

H U N T S V I L L E, A L A B A M A PGLM - 2 March 2012 (1445 UTC) Huntsville

H U N T S V I L L E, A L A B A M A PGLM - 2 March 2012 (1459 UTC)

H U N T S V I L L E, A L A B A M A Future Challenges Operational meteorologists must cope with increasing “firehose” of data, while providing more services –New models with increasing resolution, Dual-Pol Radars (2-3x the base data), GOES-R/JPSS –Decision Support, Social Media, etc.

H U N T S V I L L E, A L A B A M A Algorithms & Applications Lightning jump algorithm for GLM/ENTLN/LMAs has tremendous potential (albeit with some caveats) Other brainstorms: –Thermal boundary detection –Wind/wind shear calculations –Varied lightning safety applications –Assimilation into Warn-On-Forecast

H U N T S V I L L E, A L A B A M A Unified Algorithm Concept What if we put many of the existing concepts together? –Intermediate step between Warn-On-Detection (current) and Warn-On- Forecast (future) –Possibly less expensive computationally than high- res, high-refresh NWP? Available at local WFO? –Forecaster interactivity: manually start the algorithm on a cell, or interrupt if not feasible GLM/Lightning Jump (Severe Intensification) CIMSS NearCast (Thermal Environment, GLM Check) CIMSS Cloud-Top Cooling (Intensification) CIMSS NearCast (Thermal Environment) UAH SATCAST (Initiation, identification/tracking)

H U N T S V I L L E, A L A B A M A Closing Thoughts Next-gen satellite data has great potential to help with severe weather operations, both anticipation and validation, bridging an important gap between NWP and radar –Algorithms/data need to answer at least one of the “key questions” mentioned earlier Research & operations communities must continue to engage one another to answer the right questions, in the right ways

H U N T S V I L L E, A L A B A M A Thank you! Any questions? Acknowledgements: Geoffrey Stano (SPoRT), Kris White and Chris Darden (NWS)