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This I believe happened in Worcester, Massachusetts in 1998 or 1999, but I do not have the exact date...any verification? —Preceding unsigned comment added by 24.250.211.52 ( talk) 18:17, 27 June 2008 (UTC)
T02390189 58023 $ KFSD 030927Z 21019G36KT 9SM SQ FEW100 37/08 A2965 RMK AO2 PK WND 22036/0920 $ KFSD 030956Z 15019G33KT 10SM FEW100 23/19 A2965 RMK AO2 PK WND 22036/0920 WSHFT 0930 SLP028 T02330189 $
NATIONAL WEATHER SERVICE SIOUX FALLS SD 920 AM CDT SUN AUG 03 2008
0426 AM NON-TSTM WND DMG SIOUX FALLS 43.54N 96.73W 08/03/2008 MINNEHAHA SD NWS EMPLOYEE
WIND DAMAGE RELATED TO HEAT BURST. TREES UP TO 2 TO 3 FEET IN DIAMETER AND MANY LARGE BRANCHES DOWNED IN CENTRAL SIOUX FALLS. PATH APPEARS TO BE FROM 21ST AND PRAIRIE...TO...20TH AND SUMMIT...TO...19TH AND NORTON...TO...18TH AND DULUTH
Actually, heat bursts are physics, it's thermodynamics and fluid dynamics applied to the atmosphere. Evolauxia ( talk) 00:07, 13 March 2009 (UTC)
http://minnesota.publicradio.org/collections/special/columns/updraft/archive/2009/08/unusual_heat_burst_hits_pierre.shtml Diddydoobop ( talk) 04:33, 18 August 2009 (UTC)
Are all of those entries in the list really notable? Some are only a few degrees rise with strong winds, which (living in Kansas) I could get with the passage of a warm front. Ks0stm ( T• C• G) 22:56, 24 November 2009 (UTC)
There is an incident on the Santa Barbara history page that may be worthy of extreme event inclusion here, but I haven't had access to the reference to confirm whether the abruptness/duration qualifies. In 1859 Santa Barbara California, a coastal town, reached 133 degrees with birds falling dead from the sky. For many years it was the highest recorded U.S. temperature. Although the record was a degree lower than that at Death Valley CA, it is a far more extreme event considering the much lower norms for the coastal location. — Preceding unsigned comment added by 99.65.209.48 ( talk) 08:02, 25 February 2014 (UTC)
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"the event is thought to occur when rain evaporates (virga) into a parcel of cold, dry air high in the atmosphere, making the air denser than its surroundings." This is confusing. Which air falls rapidly? How high in the atmosphere? It is counterintuitive but, wet air is actually less dense than dry air (28.96 g/mole), since the average molecular weight of air is less when it contains dissolved water (18.0 g/mole), which displaces the heavier mix of N2 and O2 from the molar volume. King of Tea Tree ( talk) 22:43, 16 July 2023 (UTC)
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This I believe happened in Worcester, Massachusetts in 1998 or 1999, but I do not have the exact date...any verification? —Preceding unsigned comment added by 24.250.211.52 ( talk) 18:17, 27 June 2008 (UTC)
T02390189 58023 $ KFSD 030927Z 21019G36KT 9SM SQ FEW100 37/08 A2965 RMK AO2 PK WND 22036/0920 $ KFSD 030956Z 15019G33KT 10SM FEW100 23/19 A2965 RMK AO2 PK WND 22036/0920 WSHFT 0930 SLP028 T02330189 $
NATIONAL WEATHER SERVICE SIOUX FALLS SD 920 AM CDT SUN AUG 03 2008
0426 AM NON-TSTM WND DMG SIOUX FALLS 43.54N 96.73W 08/03/2008 MINNEHAHA SD NWS EMPLOYEE
WIND DAMAGE RELATED TO HEAT BURST. TREES UP TO 2 TO 3 FEET IN DIAMETER AND MANY LARGE BRANCHES DOWNED IN CENTRAL SIOUX FALLS. PATH APPEARS TO BE FROM 21ST AND PRAIRIE...TO...20TH AND SUMMIT...TO...19TH AND NORTON...TO...18TH AND DULUTH
Actually, heat bursts are physics, it's thermodynamics and fluid dynamics applied to the atmosphere. Evolauxia ( talk) 00:07, 13 March 2009 (UTC)
http://minnesota.publicradio.org/collections/special/columns/updraft/archive/2009/08/unusual_heat_burst_hits_pierre.shtml Diddydoobop ( talk) 04:33, 18 August 2009 (UTC)
Are all of those entries in the list really notable? Some are only a few degrees rise with strong winds, which (living in Kansas) I could get with the passage of a warm front. Ks0stm ( T• C• G) 22:56, 24 November 2009 (UTC)
There is an incident on the Santa Barbara history page that may be worthy of extreme event inclusion here, but I haven't had access to the reference to confirm whether the abruptness/duration qualifies. In 1859 Santa Barbara California, a coastal town, reached 133 degrees with birds falling dead from the sky. For many years it was the highest recorded U.S. temperature. Although the record was a degree lower than that at Death Valley CA, it is a far more extreme event considering the much lower norms for the coastal location. — Preceding unsigned comment added by 99.65.209.48 ( talk) 08:02, 25 February 2014 (UTC)
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"the event is thought to occur when rain evaporates (virga) into a parcel of cold, dry air high in the atmosphere, making the air denser than its surroundings." This is confusing. Which air falls rapidly? How high in the atmosphere? It is counterintuitive but, wet air is actually less dense than dry air (28.96 g/mole), since the average molecular weight of air is less when it contains dissolved water (18.0 g/mole), which displaces the heavier mix of N2 and O2 from the molar volume. King of Tea Tree ( talk) 22:43, 16 July 2023 (UTC)