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May 22-? Severe weather


MNstorms

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The hi res models are flailing wildly every run on radar sim. Wouldnt take them for too much.

The hi res models are flailing wildly every run on radar sim. Wouldnt take them for too much.

I've noticed... None of the High-Resolution Models have had ANY run to run consistency...

EDIT: Relating to Conposite Ref. sim..

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MESOSCALE DISCUSSION 0980

NWS STORM PREDICTION CENTER NORMAN OK

0105 PM CDT WED MAY 30 2012

AREAS AFFECTED...WCNTRL KS

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 301805Z - 301930Z

PROBABILITY OF WATCH ISSUANCE...60 PERCENT

SUMMARY...A SEVERE THREAT IS EXPECTED TO DEVELOP THIS AFTERNOON

ACROSS WCNTRL KS. AS STORMS INITIATE AND INCREASE IN

COVERAGE...LARGE HAIL AND WIND DAMAGE WILL BE POSSIBLE. TRENDS WILL

CONTINUE TO BE MONITORED FOR WW ISSUANCE ACROSS THE REGION.

DISCUSSION...CELLS ARE STARTING TO INITIATE IN WCNTRL KS LOCATED

ALONG A MOISTURE DIFFERENTIAL HEATING BOUNDARY EVIDENT ON VISIBLE

SATELLITE IMAGERY EXTENDING EAST TO WEST ALONG THE I-70 CORRIDOR.

THE CELL IN NESS COUNTY IS LIKELY ELEVATED WITH FORECAST SOUNDINGS

STILL SHOWING A CAP IN PLACE JUST ABOVE 850 MB. IN SPITE OF BEING

ELEVATED...STRONG EFFECTIVE SHEAR OF 60 TO 70 KT ALONG WITH

MID-LEVEL LAPSE RATES NEAR 8.5 C/KM SHOULD BE FAVORABLE FOR SEVERE

STORMS WITH HAIL. THE THREAT FOR HAIL SHOULD CONTINUE EWD INTO THE

RUSSELL KS AREA OVER THE NEXT FEW HOURS.

FURTHER TO THE WEST...MESOANALYSIS SUGGESTS THE CAPPING INVERSION IS

WEAKENING MAINLY FROM GARDEN CITY KS NWD TO AROUND OAKLEY KS. THE

WEAKENING CAP IS CO-LOCATED WITH AN AREA OF STRONG DESTABILIZATION

WHERE MLCAPE VALUES ARE ESTIMATED FROM 2000 TO 3000 J/KG. AS A

SHORTWAVE TROUGH CURRENTLY LOCATED IN WRN NEB AND ERN CO MOVES INTO

WRN KS THIS AFTERNOON...SFC-BASED STORM INITIATION WILL BECOME

INCREASINGLY LIKELY. SHORT-TERM MODEL FORECASTS SUGGEST THAT STORMS

WILL INITIATE IN WRN KS BETWEEN 20Z TO 21Z. AS THIS OCCURS...THE

STRONG INSTABILITY COMBINED WITH 0-6 KM SHEAR OF 45 TO 50 KT SHOULD

BE FAVORABLE FOR SUPERCELLS WITH LARGE HAIL. WIND DAMAGE WILL ALSO

BE POSSIBLE ACROSS THE MCD AREA ESPECIALLY AS STORMS INCREASE IN

COVERAGE BY LATE AFTERNOON.

..BROYLES/WEISS.. 05/30/2012

ATTN...WFO...ICT...GID...DDC...GLD...

post-32-0-34257200-1338401718_thumb.gif

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"STILL SHOWING A CAP IN PLACE JUST ABOVE 850 MB. IN SPITE OF BEING

ELEVATED...STRONG EFFECTIVE SHEAR OF 60 TO 70 KT ALONG WITH

MID-LEVEL LAPSE RATES NEAR 8.5 C/KM"

I am not quite seeing the 60 to 70 knots anywhere, only 40 to 50knots. Not really trying to criticize their discussion.

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"STILL SHOWING A CAP IN PLACE JUST ABOVE 850 MB. IN SPITE OF BEING

ELEVATED...STRONG EFFECTIVE SHEAR OF 60 TO 70 KT ALONG WITH

MID-LEVEL LAPSE RATES NEAR 8.5 C/KM"

I am not quite seeing the 60 to 70 knots anywhere, only 40 to 50knots. Not really trying to criticize their discussion.

Apparently Hales still works for the SPC (he retired), he always seemed to overexaggerate things...

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"STILL SHOWING A CAP IN PLACE JUST ABOVE 850 MB. IN SPITE OF BEING

ELEVATED...STRONG EFFECTIVE SHEAR OF 60 TO 70 KT ALONG WITH

MID-LEVEL LAPSE RATES NEAR 8.5 C/KM"

I am not quite seeing the 60 to 70 knots anywhere, only 40 to 50knots. Not really trying to criticize their discussion.

Actually there is Bulk Shear that strong in Texas

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MESOSCALE DISCUSSION 0982

NWS STORM PREDICTION CENTER NORMAN OK

0258 PM CDT WED MAY 30 2012

AREAS AFFECTED...SE TX PANHANDLE...NORTHWEST TX

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 301958Z - 302100Z

PROBABILITY OF WATCH ISSUANCE...60 PERCENT

SUMMARY...A SEVERE THREAT IS EXPECTED TO DEVELOP ACROSS THE SERN TX

PANHANDLE AND IN NW TX LATE THIS AFTERNOON. LARGE HAIL AND ISOLATED

WIND DAMAGE WILL BE POSSIBLE AS STORMS INITIATE AND INCREASE IN

COVERAGE. WW ISSUANCE APPEARS LIKELY ACROSS THE MCD AREA.

DISCUSSION...THE LATEST VISIBLE SATELLITE IMAGERY SHOWS TOWERING

CUMULUS DEVELOPING JUST TO THE WEST OF CHILDRESS TX ALONG A DRYLINE

WHERE SFC DEWPOINTS TO THE EAST OF THE DRYLINE ARE IN THE MID 60S F.

AS SFC TEMPS HAVE WARMED...A NARROW CORRIDOR OF STRONG INSTABILITY

HAS DEVELOPED WITH MLCAPE ESTIMATED FROM 2500 TO 3500 J/KG. AS THE

CAP WEAKENS ALONG THE DRYLINE...THUNDERSTORMS SHOULD INITIATE OVER

THE NEXT HOUR. THE LATEST WSR-88D VWP AT FREDERICK OK SHOWS ABOUT 50

KT OF DEEP LAYER SHEAR AND FORECAST SOUNDINGS IN THAT SAME AREA SHOW

VERY STEEP LAPSE RATES EXCEEDING 8.0 C/KM. THIS ENVIRONMENT SHOULD

SUPPORT SUPERCELLS WITH LARGE HAIL AND WIND DAMAGE WILL ALSO BE

POSSIBLE. ON VISIBLE SATELLITE IMAGERY...WAVE CLOUDS ARE EVIDENT

ACROSS MUCH OF SW OK AND NW TX SUGGESTING THE AIRMASS IS MORE STABLE

FURTHER TO THE EAST. THIS SHOULD LIMIT THE EWD EXTENT OF THE SEVERE

THREAT WITH THE GREATEST SEVERE THREAT LOCATED JUST TO THE EAST OF

THE CAPROCK.

..BROYLES/WEISS.. 05/30/2012

post-32-0-61398300-1338409292_thumb.gif

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And all but 1 maybe 2 MDT Risk areas (that didn't have an associated High Risk) have turned out to be busts...

The threat was always mainly wind/hail.. Premature bust calls.

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SEL2

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 322

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT WED MAY 30 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

EXTREME SOUTHWEST OKLAHOMA

PARTS OF THE EASTERN TEXAS PANHANDLE AND NORTHWEST TEXAS

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 340 PM UNTIL

900 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 30 STATUTE

MILES EAST AND WEST OF A LINE FROM 120 MILES NORTH OF CHILDRESS

TEXAS TO 100 MILES SOUTH OF CHILDRESS TEXAS. FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 321...

DISCUSSION...STORMS ARE DEVELOPING ON THE DRY LINE OVER THE ERN TX

PANHANDLE WITHIN A VERY UNSTABLE AND FAVORABLY SHEARED ENVIRONMENT.

SUPERCELL STORMS ARE LIKELY TO DEVELOP WITH POTENTIAL TO PRODUCE

VERY LARGE HAIL...DAMAGING WIND GUSTS...AND POSSIBLY A TORNADO OR

TWO. ERN EXTENT OF THE THREAT AREA IS LIMITED BY LOW LEVEL

STABILITY AS INDICATED BY WAVE CLOUDS ON VISIBLE IMAGERY...RESULTING

IN A RATHER NARROW ZONE OF SEVERE WEATHER THREAT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 27015.

...WEISS

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Just adding to my fascination with ZDR columns...

Notice shortly after convective initiation there is little information gleaned from the base reflectivity. Peeking at ZDR above 10kft you can see two areas of enhanced values. One immediately northeast of Brice, and another west northwest of Hedley. These are liquid water drops associated with two individual updrafts.

Over 25 minutes later this is the result, two supercells (one right moving and the other left moving). Now the separate ZDR columns (updrafts) are very clear, one still northeast of Brice and the other about to cross the Donley/Collingsworth County border.

In the future, the hope is to be able to issue two separate warnings (each cell eventually put 50 dBZ above 35kft) for each separate storm motion to avoid over-warning some parts of counties that have no threat. The 12z AMA sounding actually was pretty close to storm movement, with left movers roughly 230/25 and right movers 325/15.

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Not to bummed out because I realized as soon as I saw the 10% TOR risk this morning, it would bust and the probs would drop by this evening. I think this is #5 of the month. Unbelievable.

Perhaps you should let the event play out before calling it a bust

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE LUBBOCK TX

423 PM CDT WED MAY 30 2012

THE NATIONAL WEATHER SERVICE IN LUBBOCK HAS ISSUED A

* TORNADO WARNING FOR...

EASTERN HALL COUNTY IN THE PANHANDLE OF TEXAS.

WESTERN CHILDRESS COUNTY IN THE PANHANDLE OF TEXAS.

* UNTIL 500 PM CDT

* AT 421 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE MOST

DANGEROUS PART OF THIS STORM WAS LOCATED NEAR PLASKA COMMUNITY...OR

ABOUT 8 MILES SOUTH OF MEMPHIS...MOVING EAST AT 10 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE PLASKA COMMUNITY

AND ESTELLINE.

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