Weather analysis for 15 Aug 2007 with 12Z maps
For a real forecast, go to www.nws.noaa.gov.
Q-vector maps show strong convergence at 500mb over Indiana with divergence over IL. RUC analysis shows 2 baroclinic zones, one draped from SD through IA into IL and the other from NE through KS into OK and TX. This looks like it ought to be associated with a surface cyclone in NE. The RUC shows an area of pressure falls over eastern NE and western IA, but surface wind obs don't clearly show a cyclone. If there is one, it's in southern IA and it's not very big-- perhaps a mesolow from the nearby thunderstorm activity, or maybe it's a shortwave trough without a closed circulation.
There is another very strong baroclinic zone from MS through AL, GA, SC, NC, and VA, but this may simply reflect the northward extent of Gulf moisture.
TD 5 formed in the Gulf.
Based on water vapor imagery, cyclogenesis is happening in out in the Atlantic east of FL near 30N, 70W.
In the Pacific, a large low pressure system (possibly cut off) is located west of WA and OR. Flossie is weakening while being dragged off to the northeast under influence of that low and its attendant frontal structure.
Q-vector maps show strong convergence at 500mb over Indiana with divergence over IL. RUC analysis shows 2 baroclinic zones, one draped from SD through IA into IL and the other from NE through KS into OK and TX. This looks like it ought to be associated with a surface cyclone in NE. The RUC shows an area of pressure falls over eastern NE and western IA, but surface wind obs don't clearly show a cyclone. If there is one, it's in southern IA and it's not very big-- perhaps a mesolow from the nearby thunderstorm activity, or maybe it's a shortwave trough without a closed circulation.
There is another very strong baroclinic zone from MS through AL, GA, SC, NC, and VA, but this may simply reflect the northward extent of Gulf moisture.
TD 5 formed in the Gulf.
Based on water vapor imagery, cyclogenesis is happening in out in the Atlantic east of FL near 30N, 70W.
In the Pacific, a large low pressure system (possibly cut off) is located west of WA and OR. Flossie is weakening while being dragged off to the northeast under influence of that low and its attendant frontal structure.