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April 14-17th Severe Weather (Day 3 Mod)


Chicago Storm

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Could in fact become a PDS with the OKC metro area facing high impact tornadic cells later, although would say Norman OK is most likely to see eventual F2-3 ... storm chasers return to base?

lolwut? Norman is a difference of what, 30 miles? And most likely to see an EF2-3? How do you figure that out?

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Could in fact become a PDS with the OKC metro area facing high impact tornadic cells later, although would say Norman OK is most likely to see eventual F2-3 ... storm chasers return to base?

So you can predict not only tornado damage ratings in advance but their location to within 20 miles? Alrighty.

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New MD for the Tornado Watch previously issued, saying pretty much what the 18Z SGF sounding indicates.

  291   ACUS11 KWNS 172038  SWOMCD  SPC MCD 172038   ILZ000-MOZ000-ARZ000-OKZ000-KSZ000-172215-    MESOSCALE DISCUSSION 0497  NWS STORM PREDICTION CENTER NORMAN OK  0338 PM CDT WED APR 17 2013    AREAS AFFECTED...WRN AND CENTRAL MO/EXTREME ERN KS/W CENTRAL IL    CONCERNING...TORNADO WATCH 114...    VALID 172038Z - 172215Z    THE SEVERE WEATHER THREAT FOR TORNADO WATCH 114 CONTINUES.    SUMMARY...ENVIRONMENT REMAINS CONDUCIVE FOR SEVERE TSTM DEVELOPMENT  ACROSS WW 114 THROUGH THE LATE AFTERNOON...WITH ALL FACETS OF SEVERE  WEATHER REMAINING A THREAT.    DISCUSSION...MID AFTERNOON SURFACE ANALYSIS COMBINED WITH TRENDS IN  REGIONAL RADAR IMAGERY INDICATED AN OUTFLOW BOUNDARY ATTENDANT TO  TSTMS LOCATED E OF THE KANSAS CITY METRO AREA MAY BE TENDING TO  TEMPER THE NWD MOVEMENT OF THE WARM FRONT INTO NWRN MO.  AT  2015Z...THIS BOUNDARY EXTENDED FROM EAST CENTRAL KS THROUGH BATES  COUNTY MO TO PETTIS COUNTY MO.  THIS FRONT THEN EXTENDED GENERALLY  EWD ALONG AND N OF THE I-70 CORRIDOR AS A WARM FRONT.  THE WARM  SECTOR HAS BECOME MODERATELY TO VERY STRONGLY UNSTABLE WHILE  EFFECTIVE BULK SHEAR HAS INCREASED TO 40-50 KT.  THUS...SUPERCELLS  REMAIN LIKELY WITH STEEP MIDLEVEL LAPSE RATES ALSO ENHANCING THE  POTENTIAL FOR VERY LARGE HAIL.    THE DISCRETE STORM LOCATED IN ERN ST CLAIR TO SWRN BENTON COUNTIES  MO APPEARS TO BE LOCATED WITHIN A ZONE OF LOW LEVEL CONFLUENCE THAT  EXTENDED FROM SWRN MO TO 15 E KSZL. OBJECTIVE ANALYSES SHOWED AN  INCREASE IN EFFECTIVE SRH /200-300 M2 PER S2/ TO MAINTAIN A TORNADO  THREAT AND THIS IS CONFIRMED BY THE HODOGRAPH PER THE 18Z SGF  SPECIAL SOUNDING.    ..PETERS.. 04/17/2013     ..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT    ATTN...WFO...ILX...LSX...SGF...EAX...TSA...ICT...    LAT...LON   37139514 39749487 39969333 39989174 40199129 40119064              39589052 39528966 38998969 39019014 38769018 38099038              37769066 37779156 37559225 36819209 36759272 36529279              36489454 36839471 37139514 
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TOr warning out:

909

WFUS54 KOUN 172134

TOROUN

OKC031-033-141-172215-

/O.NEW.KOUN.TO.W.0001.130417T2134Z-130417T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE NORMAN OK

434 PM CDT WED APR 17 2013

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...

NORTHEASTERN TILLMAN COUNTY IN SOUTHWEST OKLAHOMA...

SOUTHWESTERN COMANCHE COUNTY IN SOUTHWEST OKLAHOMA...

EXTREME NORTHWESTERN COTTON COUNTY IN SOUTHWEST OKLAHOMA...

* UNTIL 515 PM CDT

* AT 430 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A

SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS

STORM WAS LOCATED 6 MILES NORTH OF HOLLISTER...AND MOVING

NORTHEAST AT 25 MPH.

IN ADDITION TO A TORNADO...LARGE DAMAGING HAIL UP TO GOLF BALL SIZE

IS EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...

CACHE...CHATTANOOGA AND FAXON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW IN A STORM SHELTER OR AN INTERIOR ROOM OF A STURDY

BUILDING. STAY AWAY FROM DOORS AND WINDOWS.

DO NOT STOP UNDER BRIDGES OR HIGHWAY OVERPASSES. THEY WILL NOT

PROTECT YOU FROM A TORNADO.

&&

LAT...LON 3470 9854 3440 9840 3439 9891 3449 9895

TIME...MOT...LOC 2134Z 244DEG 20KT 3444 9885

$$

--

NWS Warnings Provided by AllisonHouse.com

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