Tiempo severo USA (Norte-centro) 16/06 --> 23/06

[davidstorm]

Dupree, Dakota del Sur Tornadoes 6-16-10

[youtube][/youtube]

[matute_bow]

Pedazo de tornado David!!!

Y bueno eze, no era de esperar otra cosa que riesgo moderado para hoy, pinta MUY FUERTE la situación sobre las planicies del Norte

Miren el Lifted del NAM en la zona, menos de -10!, impresionante!


Les dejo la discusión de ahora!
Valid 171300z - 181200z


..there is a MDT risk of severe thunderstorms this afternoon and tonight over
far eastern parts of South Dakota and Nebraska...central and southern Minnesota...much of Iowa and western
WI...


..there is a slight risk of severe thunderstorms from parts of the northern plains
and middle MO valley into the upper Great Lakes...


..there is a slight risk of severe thunderstorms from the middle MS valley southward into
northern MS/al...


..nrn plains and middle MO valley eastward into the upper Great Lakes...


Potent...negatively-tilted upper trough and associated 50-60 knots
midlevel jet streak currently pivoting northeastward into the northern High Plains
will continue northeastward today with significant height falls/dynamic
forcing for ascent spreading across the Dakotas. Associated surface
low over western South Dakota will undergo occlusion while concurrently developing
northeastward through central ND into southern Manitoba. Meanwhile...trailing cold
front will surge eastward across South Dakota and Nebraska into Minnesota and Iowa by this
evening.


Fairly widespread thunderstorms are ongoing this morning over ND within zone
of deep ascent to the north of synoptic warm front extending from western South Dakota
low southeastward through southeastern South Dakota...eastern Nebraska into central MO. Much of this
activity will remain elevated through the remainder of the morning
with the threat for isolated hail and strong wind gusts while
moving/developing northeastward. In the wake of this initial activity...the
presence of a moist boundary layer /I.E. Dew points in the 60s to
around 70 f/ and steep lapse rates will result in the development of
a moderate to strongly unstable air mass by afternoon ahead of cold
front. Expect MLCAPE to range from 1000-1500 j/kg along
bent-back/occluded segment across ND...to 2000-3500 j/kg over eastern
South Dakota/W-cntrl and southwestern Minnesota into eastern Nebraska and Iowa.


Surface-based storm development is expected by early/middle afternoon
from portions of central/southern ND southeastward through eastern South Dakota into eastern Nebraska. A
largely normal orientation of deep-layer shear vector to the
initiating boundary is suggestive that initial storm Mode will be
discrete/supercellular. Expect the most intense storms to occur in
a corridor from eastern South Dakota/Nebraska into W-cntrl/southwestern Minnesota and western Iowa where the
strong instability will coincide with 40-50 knots of deep-layer shear
and 0-1 km srh of 100-250 m2/s2. Aside from large...damaging
hail...tornadoes will be possible with the initial storms...one or
two of which could be strong.


Storms are expected to grow upscale into a quasi-linear mesoscale convective system this
evening into tonight with the potential for corridors of wind damage
spreading eastward across Minnesota and Iowa into western WI.


..mid MS valley into northern MS/al...


Long radar loops indicate that ongoing storms over east-central MO and
western Kentucky are associated with mesoscale convective vortex/S remnant from upstream thunderstorm activity
the previous day. Latest surface analysis suggests that these thunderstorms
are near or immediately on the cool side of a quasi-stationary
boundary extending from central MO southeastward through western Kentucky into northern Tennessee.
Air mass along and to the S of this boundary is quite moist with dew
points in the upper 60s to lower 70s f. Early visible satellite
shows that strong diabatic heating should occur across the slight
risk area today...supporting moderate to strong instability with
MLCAPE of 2000-3000 j/kg.


Current thinking is that glancing influence of western-most mesoscale convective vortex over
east-central MO should sustain ongoing storms with activity gradually
developing southeastward along surface baroclinic zone into destabilizing
environment. Vertical shear will remain rather weak...though the
degree of instability should promote clusters of stronger storms
with the primary hazard being damaging wind gusts.

[tchmotors]

vamos vamos hagan sus apuestas, yo tiro un F4 para dakota del norte (o del sur, no me queda claro donde esta cada una)

[matute_bow]

Empieza la joda en la zona. Ya esta el primer tornado Watch sobre Dakota del Norte, aunque no es la zona más importante de hoy, pero bueno, se los dejo!!

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 333
NWS STORM PREDICTION CENTER NORMAN OK
1225 PM CDT THU JUN 17 2010

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

NORTHWEST MINNESOTA
CENTRAL AND EASTERN NORTH DAKOTA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1225 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 2 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 100 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST SOUTHWEST OF
GARRISON NORTH DAKOTA TO 5 MILES EAST SOUTHEAST OF BEMIDJI
MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 332...

DISCUSSION...SCATTERED INTENSE THUNDERSTORMS ARE EXPECTED TO AFFECT
PORTIONS OF CENTRAL/EASTERN ND AND NORTHWEST MN AS SURFACE LOW LIFTS
NORTHWARD. MULTIPLE CLUSTERS OF STORMS...INCLUDING
SUPERCELLS...WILL POSE A RISK OF LARGE HAIL...DAMAGING WINDS...AND A
FEW TORNADOES THROUGH THE AFTERNOON AND EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 23035.

[Lucas de Zárate]

sondeo del noreste de dakota del sur... (no giraba nada el viento jaja) me parece que me agarra el reventon en la facultad



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[matute_bow]

Nuevo tornado watch, y esta zona SI me gusta
Anda Reed y algunos otros por si quieren seguirlo por tornadovideos.net

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 334
NWS STORM PREDICTION CENTER NORMAN OK
155 PM CDT THU JUN 17 2010

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

WESTERN IOWA
CENTRAL AND SOUTHERN MINNESOTA
EASTERN NEBRASKA
EASTERN SOUTH DAKOTA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 155 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES EAST NORTHEAST OF
ALEXANDRIA MINNESOTA TO 15 MILES SOUTH SOUTHEAST OF OMAHA
NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

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 332...WW 333...

DISCUSSION...THUNDERSTORMS ARE EXPECTED TO RAPIDLY INTENSIFY THIS
AFTERNOON OVER EXTREME EASTERN SD/EASTERN NEB AND TRACK EASTWARD
INTO PARTS OF MN/IA. SHEAR PROFILES ARE FAVORABLE FOR SUPERCELLS
CAPABLE OF VERY LARGE HAIL...DAMAGING WINDS...AND A FEW TORNADOES.
STORMS ARE EXPECTED TO EVENTUALLY ORGANIZE INTO A SQUALL LINE AND
SPREAD ACROSS THE WATCH AREA THIS EVENING.

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
500. MEAN STORM MOTION VECTOR 24035.

[Ezz]

Muy bueno Mati, que placer da leer a estos tipos siempre en la forma que explican los modos convectivos.

Al final ese pueblito que veiamos ayer fue afectado por el tornado quizas cerca, pero que barbaro eh, era tremendo el gancho en el radar y ya veo...

[matute_bow]

esta volando la zona entera, ajajajajaja, ya hay varios tornados, pero que pocos radares hay en esa zona eh, me quedan todas las SC al borde de los radares, a ver si se me ponen las pilas, ajajajaja

EDITO, que tremendo mesociclón con tornado!!!

[davidstorm]

esta es la SC que vos mostras en esas imagenes matute...



tremendo todo che!!!!!

[matute_bow]

Que grande con las imágenes David!, te estaba esperando, sabelo!!!, ajajajaja

Geniales!!!!!!