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May 23-27 Severe Weather Obs/Disc.


Ellinwood

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Thoughts for DC?

I doubt they will see anything soon as VIS continues to show Cu primarily along the higher elevations of the Blue Ridge. RUC soundings still show a descent amount of inhibition across the region as well as of 18z. As far as this evening goes, I think that we may see an isolated storm or two based on the latest RUC forecast soundings which show inhibition lessening through out the afternoon until it reaches a minimum around 21z.

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18z Mesoanalysis

SBCAPE ~ 4500 j/kg

LI: -11

LL Lapse Rates: 8+

ML Lapse Rates: 7.5+

Hail: 3 (different area than last update)

Derecho: 10

Craven SigSvr: 50-90 range

MCS Maintenence: 90

PWATS: 1.3ish

19z Mesoanalysis

SBCAPE ~ 4000 j/kg

MLCAPE 3000-3500

LI: -10 to -12

LL Lapse Rates: 8 to 8.5

ML Lapse Rates: 7.5+

Hail: 3 (S PA/C MD/extreme N VA)

Derecho: 10 (large area in N VA/MD/DC/S PA)

Craven SigSvr: 50-90 range

MCS Maintenence: 90

PWATS: 1.1ish

Effective Bulk Shear 35-40 kts

Left moving supercell -4 to -8

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19z Mesoanalysis

SBCAPE ~ 4000 j/kg

MLCAPE 3000-3500

LI: -10 to -12

LL Lapse Rates: 8 to 8.5

ML Lapse Rates: 7.5+

Hail: 3 (S PA/C MD/extreme N VA)

Derecho: 10 (large area in N VA/MD/DC/S PA)

Craven SigSvr: 50-90 range

MCS Maintenence: 90

PWATS: 1.1ish

Effective Bulk Shear 35-40 kts

Left moving supercell -4 to -8

Even a partridge in a pear tree won't help unless either the high or the upper low moves further east than expected.

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Even a partridge in a pear tree won't help unless either the high or the upper low moves further east than expected.

you must not see the left moving derecho out your window

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BULLETIN - EAS ACTIVATION REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

340 PM EDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

GRANT COUNTY IN EASTERN WEST VIRGINIA...

ALLEGANY COUNTY IN WESTERN MARYLAND...

MINERAL COUNTY IN EASTERN WEST VIRGINIA...

* UNTIL 445 PM EDT

* AT 338 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP TO THE

SIZE OF PING PONG BALLS AND DAMAGING WINDS IN EXCESS OF 60 MPH.

THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES

SOUTHWEST OF KEYSER TO 7 MILES SOUTHEAST OF BAYARD...AND MOVING

NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...

PIEDMONT...

WESTERNPORT...

KEYSER...

LONACONING...

FROSTBURG...

RIDGELEY...

CUMBERLAND...

LA VALE...

FORT ASHBY...

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That stuff in southeast WV is over 35,000 ft. The one SE of Beckley has big hail.

Here's the warning statement for it

AT 348 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE

HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS

LOCATED NEAR PIPESTEM...MOVING NORTHEAST AT 25 MPH.

That stuff just popped up in the last hour.

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