Impresionante tormenta de invierno COMPLETA en USA

[Seba]

Jajajajaj que genios,en el aviso dicen que vayan para adentro de inmediato. Es oficial eso?

[matute_bow]

Jajajajaj que genios,en el aviso dicen que vayan para adentro de inmediato. Es oficial eso?

Claro que es oficial!!!!!!, y ahi no joden con los warning!.... otra cultura!

[matute_bow]

Hermoso sondeo de 18z en Jackson, y se esta notando como aumenta el viento en los niveles bajos en la zona central de riesgo leve de tormentas severas, y también aumento notablemente la inestabilidad, pasando de -1 a casi -5 el Showalter en esa zona, HERMOSO!!



EL SONDEO SE ENVIO HACE MENOS DE 1 HORA Y MEDIA, QUE RÁPIDO LO PROCESAN POR FAVOR!!!!!

[matute_bow]

TORNADO WATCH en marcha

(http://www.spc.noaa.gov/products/watch/ww0796.html" onclick="window.open(this.href);return false)

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 796
NWS STORM PREDICTION CENTER NORMAN OK
125 PM CST TUE DEC 8 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

PARTS OF SOUTHEAST ARKANSAS
PARTS OF NORTHERN AND CENTRAL LOUISIANA
PARTS OF CENTRAL AND SOUTHERN MISSISSIPPI

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 125 PM UNTIL
900 PM CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTHEAST OF
ALEXANDRIA LOUISIANA TO 30 MILES NORTHWEST OF GREENWOOD
MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).

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.

DISCUSSION...APPROACH OF POWERFUL UPPER JET AND S/WV TROUGH
RESULTING IN RAPID RETURN OF LOW LEVEL MOISTURE ACROSS LOWER MS
VALLEY AS CYCLOGENESIS TAKES PLACE TO THE NORTH. THUNDERSTORMS
EXPECTED TO INCREASE IN NUMBER AND INTENSITY EWD ACROSS WATCH AREA.
WITH STRONG...VEERING DEEP LAYER SHEAR PROFILES AND MLCAPES IN WARM
SECTOR TO 1000 J/KG...SUPERCELLS INCLUDING TORNADO POTENTIAL WILL
RAMP UP REMAINDER OF AFTERNOON THRU THE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 23040.


...HALES

Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Moderate
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low Low


Note: See the experimental Public Watch (SEL) product with explicit hazard information section below. The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.

[tchmotors]

al final es lo que yo dije, tienen tornados hasta cuando no deberían

che matute, pregunta obligada, para cuando se reactiva toda la zona nuestra???

[davidstorm]

Finalmente se dio el Tornado Watch... veremos como evoluciona...

[matute_bow]

al final es lo que yo dije, tienen tornados hasta cuando no deberían

che matute, pregunta obligada, para cuando se reactiva toda la zona nuestra???

Mauro, fijate que lo vamos siguiendo en Pronóstico, por ahora muy de a poco se van viendo cambios hacia la semana que viene y la otra, pero como me dice que digo Ariel , YA VEREMOSSSS...

[davidstorm]

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
230 PM CST TUE DEC 8 2009

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
SOUTHERN PHILLIPS COUNTY IN EASTERN ARKANSAS...
COAHOMA COUNTY IN NORTHWEST MISSISSIPPI...
DESOTO COUNTY IN NORTHWEST MISSISSIPPI...
NORTHERN MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
NORTHWESTERN PANOLA COUNTY IN NORTHWEST MISSISSIPPI...
NORTHERN QUITMAN COUNTY IN NORTHWEST MISSISSIPPI...
TATE COUNTY IN NORTHWEST MISSISSIPPI...
TUNICA COUNTY IN NORTHWEST MISSISSIPPI...
FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
SOUTHEASTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE...

* UNTIL 530 PM CST

* AT 230 PM CST...DOPPLER RADAR ESTIMATES 1 TO 3 INCHES OF RAINFALL
HAS OCCURRED OVER THE PAST 6 HOURS. SHOWERS AND THUNDERSTORMS WILL
PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAIN OVER THE NEXT 2 HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELAINE...
HELENA...WEST HELENA...CLARKSDALE...HERNANDO...OLIVE BRANCH...
SENATOBIA...COLLIERVILLE...ST FRANCIS NATIONAL PARK AND WHITE RIVER
NATIONAL WILDLIFE REFUGE.

THIS WARNING ALSO INCLUDES AREAS NEAR ARKABUTLA LAKE...BEAVERDAM
LAKE...DESOTO LAKE...FLOWER LAKE...HORSESHOE LAKE...MOON LAKE
AND OLD TOWN LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MEMPHIS.

[davidstorm]

Lo que esta nevando en los estados Iowa, Kansas y Nebraska, no tiene nombre

[jic]

Yendo a lo del tema de las vaguadas Juani, el tema es así, las vaguadas inclinadas negativamente son las que se tiran para adelante cuando las mirás hacia el Ecuador. Es decir, si vos tenés una vaguada por ejemplo, la misma estará negativamente inclinada si su parte ecuatorial está más al Este que la parte más polar. Eso, según la teoría de inestabilidad barotrópica, daría para que la onda pierda energía mediante esa teoría, pero acá vemos que las ondas inclinadas así ganan energía, por lo que evidentemente hay otros mecanismos que hacen que la onda gane energía a pesar de estar perdiéndola barotrópicamente.
Y lógicamente en el Hemisferio Norte, las delanteras de vaguadas suelen venir con vientos del SO en altura y las delanteras de cuñas o traseras de vaguadas, con vientos del NO.

Gracias por aclararme el panorama marcos