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June 1, 2012 - Severe Thunderstorms/Tornadoes Event


Kmlwx

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Well, I'll trust the SPC more than most of you's in here! Lol. Good luck to anyone chasing, stay safe.

not to demean anyone on the board...but that upgrade was signed off by some of SPCs best and most experienced forecasters...let's see how it plays out...

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15 percent tornado probs. impressive. Things do look relatively impressive to me this midday with the warm front location and the destabilization that has taken place thus far. Obviously the caveats I posted earlier still exist but the threat is definitely there.

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I pegged Richmond for tors in my forecast today. We will see what happens, but I am not surprised by SPC upgrade.

I agree that the best threat for discrete supercells is down by RIC but I think they're lacking enough low level shear for a widespread tornado threat. Tough call today all around.

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First warning

BULLETIN - EAS ACTIVATION REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE RALEIGH NC

1239 PM EDT FRI JUN 1 2012

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

NORTH CENTRAL FRANKLIN COUNTY IN CENTRAL NORTH CAROLINA

EASTERN VANCE COUNTY IN CENTRAL NORTH CAROLINA

WESTERN WARREN COUNTY IN CENTRAL NORTH CAROLINA

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not to demean anyone on the board...but that upgrade was signed off by some of SPCs best and most experienced forecasters...let's see how it plays out...

I agree 100%. It wasn't a knock to anyone. A good amount of people were thinking downgrade. If the SPC upgraded, there's a damn good reason for it. Personally, I'd stay just between Baltimore and DC. The only prob is Friday traffic rush hour :-(.

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PUBLIC SEVERE WEATHER OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1140 AM CDT FRI JUN 01 2012

..SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF EXTREME SRN PA

ERN

WV PANHANDLE...NRN VA...PORTIONS OF MD THIS AFTERNOON AND EVENING

INCLUDING THE D.C...

THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE

DEVELOPMENT OF TORNADOES OVER PARTS OF EXTREME SRN PA...ERN WV

PANHANDLE...NRN VA...AND PORTIONS OF MD THIS AFTERNOON AND EVENING

INCLUDING THE D.C.

THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE

WASHINGTON DC

MUCH OF WESTERN AND CENTRAL MARYLAND

EXTREME SOUTHERN PENNSYLVANIA

NORTHERN VIRGINIA

EXTREME EASTERN WEST VIRGINIA PANHANDLE

ELSEWHERE...SEVERE STORMS ARE ALSO POSSIBLE SURROUNDING THE ENHANCED

RISK AREA FROM CENTRAL PA SOUTHWARD THROUGH THE CAROLINAS INTO NRN

FL.

STRONG UPPER TROUGH IS PROGRESSING ACROSS THE OH VALLEY EARLY THIS

AFTERNOON AND LARGE SCALE ASCENT WITH THIS FEATURE SHOULD OVERSPREAD

THE UPPER OH VALLEY INTO THE MIDDLE ATLANTIC REGION INTO THE EARLY

EVENING HOURS. FOCUSED AND STRONGLY FORCED COLD FRONT WILL INDUCE A

LINE OF POTENTIALLY SEVERE THUNDERSTORMS CAPABLE OF PRODUCING

DAMAGING WINDS AS IT MOVES ACROSS THE CENTRAL APPALACHIANS INTO THE

MIDDLE ATLANTIC REGION THIS AFTERNOON/EVENING. STRONG SHEAR MAY

INDUCE EMBEDDED SUPERCELL STRUCTURES CAPABLE OF SPAWNING A FEW

TORNADOES WITH THIS FRONTAL CONVECTION.

ADDITIONALLY...ISOLATED DISCRETE SUPERCELLS MAY ALSO DEVELOP WELL

AHEAD OF THE COLD FRONT ACROSS VA...NORTHWARD INTO SOUTHERN PA ALONG

A WARM FRONT. ISOLATED TORNADOES ARE ALSO POSSIBLE WITH THESE

STORMS.

STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING

SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE

WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA

WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER

TODAY.

..DARROW.. 06/01/2012

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I agree that the best threat for discrete supercells is down by RIC but I think they're lacking enough low level shear for a widespread tornado threat. Tough call today all around.

I was thinking between Richmond and Fredericksburg would be my target if I were chasing.

No I agree...but I was going for better discrete potential. But you are right, better wind fields/instability is farther N.

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Need a ride from the airport?

I'm going to try to get the cabby to chase with me.

Oh well.. Trough does fit the historical analogs for tornadoes. Maybe I am skeptical since not there. My EF5 will have to be captured by 30,000 other photogs without me. ;)

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TOR Coming probably. That's it for me folks, stay safe and have fun!

000

ACUS11 KWNS 011704

SWOMCD

SPC MCD 011703

NCZ000-MDZ000-VAZ000-PAZ000-DCZ000-WVZ000-011830-

MESOSCALE DISCUSSION 1004

NWS STORM PREDICTION CENTER NORMAN OK

1203 PM CDT FRI JUN 01 2012

AREAS AFFECTED...NC...VA...WV...MD...DC...PA

CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY

VALID 011703Z - 011830Z

PROBABILITY OF WATCH ISSUANCE...80 PERCENT

SUMMARY...THUNDERSTORMS WILL INCREASE THROUGH THE AFTERNOON IN A

VERY MOIST AND INCREASINGLY UNSTABLE AIRMASS FROM NC NWD ACROSS

VA...SRN PA...WV PNHDL...AND MD/DC AREA. RECENT TRENDS SUGGEST THAT

ISOLATED STORMS WILL FIRST POSE A THREAT FOR ISOLATED SEVERE WEATHER

IN THE FORM OF HAIL/WIND OVER PARTS OF NERN NC AND SERN VA WHERE

INSTABILITY IS GREATEST BUT SHEAR AND FORCING WILL REMAIN LIMITED

FOR A TIME. ADDITIONAL SEVERE STORMS ARE LIKELY AS A FORCED SQUALL

LINE DEVELOPS EAST OF THE APPALACHIANS LATER THIS AFTERNOON. DEEP

SHEAR AND TORNADO POTENTIAL MAY INCREASE ACROSS THE ENTIRE REGION

FROM LATE AFTERNOON INTO EVENING AND ONE OR MORE TORNADO WATCHES

WILL LIKELY BE ISSUED OVER THE NEXT 1-2 HOURS.

DISCUSSION...STRONG FORCED ASCENT WITH A LARGE SCALE TROUGH WAS

LIKELY RESULTING IN AN INCREASE IN LOW-TOPPED CONVECTION ALONG A

COLD FRONT NOW SITUATED FROM ERN OH SWD ACROSS WV...EXTREME SWRN VA

AND ERN TN. EXPECT THAT THIS CONVECTION WILL CROSS THE SPINE OF THE

APPALACHIANS OVER THE NEXT 2 HOURS. AS THIS FORCING BEGINS TO

INTERACT WITH GREATER INSTABILITY EAST OF THE MOUNTAINS...MORE

VIGOROUS STORM DEVELOPMENT IN THE FORM OF BOWING/LEWPING SEGMENTS

CAN BE EXPECTED. A WEAK FRONTAL WAVE MAY ALSO TAKE FORM WITH TIME

COINCIDENT WITH AN INCREASE IN STORMS ALONG A WARM FRONT EXTENDING

ACROSS SRN PA AND INTO THE DELMARVA REGION. IN ADDITION TO WIND

DAMAGE THREAT WITH STORMS ALONG THE ADVANCING FRONT...AN ENHANCED

BUT FOCUSED TORNADO THREAT MAY EVOLVE NEAR THE FRONTAL WAVE AND WARM

FRONT. ONE TORNADO WATCH WILL LIKELY BE NEEDED FROM SRN PA ACROSS

WRN VA WITHIN THE NEXT HOUR OR SO.

ANOTHER WATCH WILL LIKELY BE NEEDED FROM THE ONGOING STORMS OVER NRN

NC NWD ACROSS THE VA TIDEWATER AREA. STORMS IN THIS AREA ARE

DEVELOPING WITH HEATING OF THE DAY AND PERHAPS THE LARGER SCALE

ASCENT DEVELOPING EAST WITH THE TROUGH. WHILE INSTABILITY IS GREATER

IN THIS CORRIDOR...DEEP SHEAR AND FORCING ARE LIKELY MORE MARGINAL

TO SUPPORT A MORE WIDESPREAD IMMEDIATE THREAT OF SEVERE TSTMS

WIND/TORNADOES. NONETHELESS...SHEAR WILL LIKELY INCREASE

SUFFICIENTLY WITH TIME ACROSS THIS AREA TO WARRANT A TORNADO WATCH

AND THIS WATCH WILL LIKELY BE COORDINATED SHORTLY.

..CARBIN.. 06/01/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PHI...AKQ...MHX...CTP...LWX...RAH...RNK...PBZ...

RLX...

LAT...LON 38408025 40257988 40477934 40297812 39657645 39017601

37387611 36877609 35757572 35507692 35827806 36427895

36447972 36738043 37068060 37358072 38408025

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Strong wording in the PSWO:

ZCZC SPCPWOSPC ALL

WOUS40 KWNS 011640

DCZ000-MDZ000-PAZ000-VAZ000-WVZ000-020200-

PUBLIC SEVERE WEATHER OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1140 AM CDT FRI JUN 01 2012

...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF EXTREME SRN PA...ERN

WV PANHANDLE...NRN VA...PORTIONS OF MD THIS AFTERNOON AND EVENING

INCLUDING THE D.C...

THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE

DEVELOPMENT OF TORNADOES OVER PARTS OF EXTREME SRN PA...ERN WV

PANHANDLE...NRN VA...AND PORTIONS OF MD THIS AFTERNOON AND EVENING

INCLUDING THE D.C.

THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE

WASHINGTON DC

MUCH OF WESTERN AND CENTRAL MARYLAND

EXTREME SOUTHERN PENNSYLVANIA

NORTHERN VIRGINIA

EXTREME EASTERN WEST VIRGINIA PANHANDLE

ELSEWHERE...SEVERE STORMS ARE ALSO POSSIBLE SURROUNDING THE ENHANCED

RISK AREA FROM CENTRAL PA SOUTHWARD THROUGH THE CAROLINAS INTO NRN

FL.

STRONG UPPER TROUGH IS PROGRESSING ACROSS THE OH VALLEY EARLY THIS

AFTERNOON AND LARGE SCALE ASCENT WITH THIS FEATURE SHOULD OVERSPREAD

THE UPPER OH VALLEY INTO THE MIDDLE ATLANTIC REGION INTO THE EARLY

EVENING HOURS. FOCUSED AND STRONGLY FORCED COLD FRONT WILL INDUCE A

LINE OF POTENTIALLY SEVERE THUNDERSTORMS CAPABLE OF PRODUCING

DAMAGING WINDS AS IT MOVES ACROSS THE CENTRAL APPALACHIANS INTO THE

MIDDLE ATLANTIC REGION THIS AFTERNOON/EVENING. STRONG SHEAR MAY

INDUCE EMBEDDED SUPERCELL STRUCTURES CAPABLE OF SPAWNING A FEW

TORNADOES WITH THIS FRONTAL CONVECTION.

ADDITIONALLY...ISOLATED DISCRETE SUPERCELLS MAY ALSO DEVELOP WELL

AHEAD OF THE COLD FRONT ACROSS VA...NORTHWARD INTO SOUTHERN PA ALONG

A WARM FRONT. ISOLATED TORNADOES ARE ALSO POSSIBLE WITH THESE

STORMS.

STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING

SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE

WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA

WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER

TODAY.

..DARROW.. 06/01/2012

$$

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