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Severe Weather Thread (April 26 - May 3)


David Reimer

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12z RGEM lights it up into northern OK. If that happens it is going to get ugly based off the kinematics/thermodynamics through that entire region.

MLCIN is weakening down into N OK. Some weakening near the WF is SE KS and the storms in SW MO are forming right on the edge.

2012-04-27_112001.jpg

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1630 outlook

"THE ASSOCIATED EML WILL LIKELY

CAP DEVELOPMENT OF SURFACE BASED STORMS OVER MUCH OF OK...WITH

PRIMARY TSTM ACTIVITY SPREADING ACROSS PARTS OF KS INTO MO.

FAVORABLE DEEP LAYER SHEAR /40-50 KT OVER THE LOWEST 6 KM/ WILL

PROMOTE DEVELOPMENT OF SUPERCELLS...AND SUFFICIENT LOW LEVEL

SHEAR/SRH COUPLED WITH LOW LCL HEIGHTS SUGGEST POTENTIAL FOR

TORNADIC SUPERCELLS TO DEVELOP...ESPECIALLY ALONG/NEAR THE WARM

FRONT WHERE A FEW STRONG TORNADOES WILL BE POSSIBLE."

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Springfield, MO MCD but it's too long to post, mentions strong tornadoes:

http://www.wunderground.com/DisplayDisc.asp?DiscussionCode=SGF&StateCode=MO&SafeCityName=Springfield

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE TULSA OK

1143 AM CDT FRI APR 27 2012

...UPDATE...

.DISCUSSION...

CONDITIONS WILL CONTINUE TO EVOLVE AS STRONG COMPACT WAVE EJECTS

ACROSS KANSAS THIS AFTERNOON AND EVENING. WARM FRONT CURRENTLY

EXTENDING ACROSS FAR NE OK INTO FAR NW AR WILL CONTINUE TO LIFT

NORTHWARD...AND BE JUST NORTH OF EXTREME NE OK AND FAR NW AR BY

LATE AFTERNOON. THE AXIS OF HIGHEST DEWPOINTS WILL FOLLOW THE

LIFTING WARMING FRONT AND BE REPLACED BY SLIGHTLY LOWER VALUES

WITHIN THE WARM SECTOR WHICH WILL BE NOTABLE IN FORECASTING THE

CAP STRENGTH LATER THIS AFTERNOON. 12Z OUN SOUNDING SAMPLED THE

THE STEEP LAPSE RATE ENVIRONMENT AND THE ASSOCIATED STRONG CAPPING

INVERSION IN PLACE. THE MOST INTENSE DYNAMIC LIFT IS FORECAST TO

REMAIN NORTH OF THE AREA WITH SFC WINDS GRADUALLY VEERING BY LATE

AFTERNOON AHEAD OF THE DRYLINE. THESE FACTORS WILL LIMIT...AND

POSSIBLY PREVENT...THUNDERSTORM DEVELOPMENT SOUTHWARD INTO NE OK

THUS AFTERNOON THUNDERSTORM CHANCES WILL REMAIN LOW. THE

AVAILABLE INSTABILITY AND SHEAR WILL BE SUPPORTIVE OF SUPERCELLS

SO THAT THE CONDITIONAL RISK OF SEVERE WEATHER WILL REMAIN HIGH

INTO THE EVENING HOURS. THE UPDATED FORECAST WILL REMOVE

MENTIONABLE PRECIP CHANCES UNTIL LATE AFTERNOON...AND ADJUST

DEWPOINTS BASED ON OBSERVED AND LOCAL MODELING TRENDS. ALL OTHER

ELEMENTS REMAIN ON TRACK.

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i'd be tempted to take the under. hodos look sick but the sfc low is occluded and prime area is pretty small. these compact systems can produce well but they can underproduce also. if nothing else there always shuold be at least one voice not going to the extreme. ;)

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i'd be tempted to take the under. hodos look sick but the sfc low is occluded and prime area is pretty small. these compact systems can produce well but they can underproduce also. if nothing else there always shuold be at least one voice not going to the extreme. ;)

Are you chasing today? I'd feel safer if you were :)

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Thoughts are with all of you out in your area of concern, JoMo, particularly if those supercells verify this evening. Stay safe.

Thanks. A lot of people are freaking out. Some want to head south into Oklahoma until it passes, others hysterically crying. Lots of nerves.

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