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Slight Risk April 18th


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Posted
  • Location: south London
  • Location: south London

EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 955 AM UNTIL

400 PM CDT.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHWEST OF

LUFKIN TEXAS TO 30 MILES EAST SOUTHEAST OF PALACIOS TEXAS. FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU5).

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 164...

DISCUSSION...ISOLATED SUPERCELL THUNDERSTORMS ARE INTENSIFYING

WITHIN BROAD REGION OF CONVECTION OVER EAST-CENTRAL AND SOUTHEAST

TX. VAD PROFILE FROM HGX VERIFIES THAT SUBSTANTIAL LOW LEVEL

VERTICAL SHEAR WILL PROMOTE A THREAT OF ISOLATED TORNADOES WITHIN

THIS AREA THROUGH THE LATE MORNING AND AFTERNOON AS STORMS MOVE

SLOWLY NORTHEASTWARD.

ww0165_radar.gif

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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24020.

Edited by dogs32
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Posted
  • Location: south London
  • Location: south London

no.1tornado2.gif

1430 10 NE FRANKLIN ROBERTSON TX 3113 9637 BRIEF TORNADO SPOTTED NEAR EASTERLY. TREES...POWERLINES....AND FENCE DOWN. SHOOK HOUSE. REPORT RELAYED BY EM. (FWD)

Edited by dogs32
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Posted
  • Location: SE London
  • Location: SE London

just the one so far. seems to be a lull with the meoscale discussion been quiet too

Latest probabilities

Tornadoes

Probability of 2 or more tornadoes Mod (50%)

Probability of 1 or more strong (F2-F5) tornadoes Low (20%)

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Posted
  • Location: SE London
  • Location: SE London

Watch 166 issued

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 166

NWS STORM PREDICTION CENTER NORMAN OK

100 PM CDT SAT APR 18 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

WESTERN LOUISIANA

SOUTHEAST TEXAS

COASTAL WATERS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 100 PM UNTIL

800 PM CDT.

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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH NORTHWEST OF

NATCHITOCHES LOUISIANA TO 35 MILES SOUTHEAST OF PORT ARTHUR

TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).

full text http://www.spc.noaa.gov/products/watch/ww0166.html

Meoscale discussion looks lively

ISOLATED TSTMS HAVE DEVELOPED RAPIDLY OVER SW KS BETWEEN DDC-GCK AND

QUICKLY YIELDED TORNADO REPORT. ADDITIONAL TORNADO THREAT ALSO

EXISTS WITH DEVELOPMENT EXPECTED DURING NEXT 3-4 HOURS SEWD TOWARD

NW OK...WHERE SFC VORTICITY APPEARS RELATIVELY MAXIMIZED AMIDST

INCREASING LOW LEVEL CAPE

.
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Posted
  • Location: south London
  • Location: south London

no.2

1758 5 NE INGALLS GRAY KS 3788 10039 LAW ENFORCEMENT OFFICER OBSERVED A TORNADO ON THE GROUND 5 MILES NE OF INGALLS. (DDC)

plenty of time yet MAF

Edited by dogs32
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Posted
  • Location: SE London
  • Location: SE London

livening up now

Watch 167 issued

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 167

NWS STORM PREDICTION CENTER NORMAN OK

130 PM CDT SAT APR 18 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

CENTRAL KANSAS

NORTHWEST OKLAHOMA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 130 PM UNTIL

700 PM CDT.

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

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH OF DODGE CITY

KANSAS TO 70 MILES SOUTH OF ALVA OKLAHOMA. FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU7).

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Posted
  • Location: Edinburgh
  • Location: Edinburgh

Completely unrelated but my friends kinda furious, her Fall Out Boy show (which is at an open air arena) in TX has just been cancelled due one of the tornado warning. Apparently the whole things in chaos and the security have no idea what to do, in her own words; "screw this crap I'm getting in my car and getting the hell out of the warning area."

Edited by sammie
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Posted
  • Location: south London
  • Location: south London

no.3..

1832 9 N CIMARRON GRAY KS 3794 10035 SPOTTER REPORTED A TORNADO ON THE GROUND 9 MILES NORTH OF CIMARRON. (DDC)

Edited by dogs32
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Posted
  • Location: Gosport, Hampshire.
  • Location: Gosport, Hampshire.

Certainly some moderate CAPE about ATM. SPC reports 2 tornadoes KS and another in TX. Almost no vertical shear over KS so these could well be Convergence Zone type tornadoes developed along boundaries. Some moderate low level shear SE TX could spout another couple maybe. Though the upper shear doesn't look to overrun the storms at that location so we could have some limitation for large hail and further tornadoes maybe. Still worth monitoring though :good:

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Posted
  • Location: south London
  • Location: south London

no,4

1910 1 SE KALVESTA FINNEY KS 3804 10027 TWO TORNADOES OBSERVED JUST 1 MILE SE OF KALVESTA. (DDC)

Edited by dogs32
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Posted
  • Location: south London
  • Location: south London

no/5.6

todate

1430 10 NE FRANKLIN ROBERTSON TX 3113 9637 BRIEF TORNADO SPOTTED NEAR EASTERLY. TREES...POWERLINES....AND FENCE DOWN. SHOOK HOUSE. REPORT RELAYED BY EM. (FWD)

1758 5 NE INGALLS GRAY KS 3788 10039 LAW ENFORCEMENT OFFICER OBSERVED A TORNADO ON THE GROUND 5 MILES NE OF INGALLS. (DDC)

1832 9 N CIMARRON GRAY KS 3794 10035 SPOTTER REPORTED A TORNADO ON THE GROUND 9 MILES NORTH OF CIMARRON. (DDC)

1910 1 SE KALVESTA FINNEY KS 3804 10027 TWO TORNADOES OBSERVED JUST 1 MILE SE OF KALVESTA. (DDC)

1920 6 E KALVESTA HODGEMAN KS 3805 10017 TORNADO HIT A HOUSE. (DDC)

1935 2 E KALVESTA FINNEY KS 3805 10024 (DDC)

this is more than lively than I first thought

Edited by dogs32
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Posted
  • Location: Leigh On Sea - Essex & Tornado Alley
  • Location: Leigh On Sea - Essex & Tornado Alley

Yep

This is outside of the Original Slight Box this morning, 1st signs of something happening was an MD Issued about 3 hours ago, Look to be Photogenic Tornado Warned Storms moving at 5-10mph with great Radar Signatures, the one NE Of Dodge is the best.

Anyone find any Live Streams - There might be some Local Chasers out with this Storm

Paul S

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Posted
  • Location: Leigh On Sea - Essex & Tornado Alley
  • Location: Leigh On Sea - Essex & Tornado Alley
Hey Paul, just goes to show how some fine surface tuning can deliver the works!

Hi Tony

Yep as you always say dont take the SPC As Gospel!

Paul S

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Posted
  • Location: south London
  • Location: south London

8 Tornado's on this Risk day

430 10 NE FRANKLIN ROBERTSON TX 3113 9637 BRIEF TORNADO SPOTTED NEAR EASTERLY. TREES...POWERLINES....AND FENCE DOWN. SHOOK HOUSE. REPORT RELAYED BY EM. (FWD)

1758 5 NE INGALLS GRAY KS 3788 10039 LAW ENFORCEMENT OFFICER OBSERVED A TORNADO ON THE GROUND 5 MILES NE OF INGALLS. (DDC)

1832 9 N CIMARRON GRAY KS 3794 10035 SPOTTER REPORTED A TORNADO ON THE GROUND 9 MILES NORTH OF CIMARRON. (DDC)

1910 1 SE KALVESTA FINNEY KS 3804 10027 TWO TORNADOES OBSERVED JUST 1 MILE SE OF KALVESTA. (DDC)

1915 2 E KALVESTA FINNEY KS 3804 10024 TWO OUT BUILDINGS DAMAGED OR DESTROYED. ONE SHED AND ONE DETATCHED GARAGE. PART OF A ROOF WAS ALSO BLOWN OFF A HOME. (DDC)

1920 6 E KALVESTA HODGEMAN KS 3805 10017 TORNADO HIT A HOUSE. (DDC)

1935 2 E KALVESTA FINNEY KS 3805 10024 (DDC)

2050 3 ESE HITCHCOCK GALVESTON TX 2930 9497 SHELL KEY, HITCHCOCK. TREES UPROOTED AND HURRICANE REINFORCED GARAGE DOORS BLOWN IN. TIME ESTIMATED. (HGX)

Largest hail on this day was

2113 275 10 W ALVA WOODS OK 3680 9885 (OUN)

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Posted
  • Location: East Renfrewshire 180m asl
  • Location: East Renfrewshire 180m asl

Reed (i think) managed to get these tornadoes yesterday in Kansas :

Look at the hail as well!

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Posted
  • Location: south London
  • Location: south London
Reed (i think) managed to get these tornadoes yesterday in Kansas :

Look at the hail as well!

well done Ross...Its good to see the real thing after following them all evening..Just puts the iceing on the cake

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Posted
  • Location: Caterham-on-the-hill, Surrey, 190m asl (home), Heathrow (work)
  • Location: Caterham-on-the-hill, Surrey, 190m asl (home), Heathrow (work)

He always gets on 'em! Impressive hail cover, looks like snow.

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