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June 1, 2012 - Severe Thunderstorms/Tornadoes Event


Kmlwx

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Here is the RNK afternoon discussion. Probably doesn't apply to the majority of the people here since most of you are from northern VA and MD, but I'll post anyway if there are any lurkers from my area. They sound quite confident for something good down here in my neck of the woods.

THE REGION WILL BE IN THE ENTRANCE REGION OF THE LOW LEVEL JET WITH

GOOD DIFFLUENCE ALOFT. DISCREET SUPERCELL SHOULD MORPH INTO LINE

SEGMENTS WITH DAMAGING WINDS AND LARGE HAIL BEING THE PRIMARILY

THREAT. HELICITIES MODERATE ENOUGH IN THE EAST TO NOT RULE OUT AN

ISOLATED TORNADO DURING THE LATE AFTERNOON/EVENING

HOURS...ESPECIALLY IF THE WARM FRONT STALLS NEAR THE AREA. MODEL

FORECAST HODOGRAPHS ARE ALSO IMPRESSIVE. GOOD INSOLATION WHILE IN

THE WARM SECTOR WILL HELP DESTABILIZATION THE ATMOSPHERE WITH CAPES

INCREASING INTO THE 1000-2000 J/KG RANGE. SPC HAS THE AREA IN A

SLIGHT RISK WITH MENTION OF UPGRADING TO MODERATE OF EASTERN PORTIONS

OF THE AREA. GIVEN THE DEGREE OF INSTABILITY AND NEGATIVE TILTED

TROUGH PUSHING A COLD FRONT ACROSS THE REGION...A SEVERE

THUNDERSTORM WATCH IS HIGHLY LIKELY FRIDAY AFTERNOON/EVENING.

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NAM also keeps the whole thing together and drags the mess across the overnight into the threat area tomorrow. Looks like linear activity.

4km NAM from PSU says otherwise. It has some discret cells prior to the main line

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"Some thunderstorms may be severe" wording put into the zones for the 930 update... usually they wait till the 330AM update... interesting

I don't know if that suggests anything other than higher confidence than normal in at lease SOME severe. Not sure it hints at intensity.

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I don't know if that suggests anything other than higher confidence than normal in at lease SOME severe. Not sure it hints at intensity.

I agree with that... just usually I dont think we see that wording the day before very much... unless as you said that LWX feels that we have a good chance at severe storms

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