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Old 02-11-2012, 02:42 AM
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Derecho Derecho is offline
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Default New Tornado Warnings to be Experimented

The National Weather Service will be implementing a new experimental tiered tornado warning format at five NWS offices located in Topeka, KS - Wichita, KS - Kansas City, MO - Springfield, MO - and St. Louis, MO beginning April 2, 2012.

It is hoped if this works, the NWS will switch over to a threat-based tornado warning, and severe tstorm warning, format based on levels of severity.

NWS currently issues tornado/tstorm warnings with a short paragraph that outlines where a storm is and what the storm is capable of producing or has produced. This is also followed by cities and towns in the path of the storm.

The new experimental format will reduce that paragraph to a sentence or two with what the storm is doing. It will then be followed by what hazards are to be expected, source of confirmation, and impact conditions. If a tornado has been confirmed, it will also outline the damage threat as "significant" or "catastrophic".

Full report: http://products.weather.gov/PDD/PDD_CR_IBW_011012.pdf

Examples:

Current format using a tornado emergency:
Code:
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BLOUNT COUNTY IN ALABAMA...
  NORTHERN CALHOUN COUNTY IN EAST CENTRAL ALABAMA...
  SOUTHERN ETOWAH COUNTY IN NORTHEAST ALABAMA...
  NORTHEASTERN JEFFERSON COUNTY IN ALABAMA...
  NORTHERN ST. CLAIR COUNTY IN ALABAMA...

* UNTIL 515 AM CST

* AT 412 AM CST...STORM SPOTTERS AND THE NATIONAL WEATHER SERVICE
  WERE TRACKING A LARGE AND EXTREMELY DANGEROUS TORNADO NEAR CLAY...
  OR NEAR TRUSSVILLE. DOPPLER RADAR SHOWED THIS TORNADO MOVING
  NORTHEAST AT 55 MPH.

  THIS IS A TORNADO EMERGENCY FOR CLAY...SPRINGVILLE...ARGO...TAKE
  COVER NOW.

* LOCATIONS IMPACTED INCLUDE...
  SPRINGVILLE...ODENVILLE...MARKTON...RAINBOW CITY...GADSDEN...
  JACKSONVILLE...HOKES BLUFF...MARGARET...BRANCHVILLE AND ASHVILLE.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBERS 143 THROUGH 183...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3410 8580 3401 8574 3397 8574 3397 8570
     3379 8562 3378 8562 3363 8659 3379 8662
     3412 8584 3411 8583 3413 8581 3412 8579
TIME...MOT...LOC 1015Z 245DEG 46KT 3371 8653

$$
Experimental format using Joplin as an example:
Code:
THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN NEWTON COUNTY IN SOUTHWEST MISSOURI...
  SOUTHEASTERN CHEROKEEE COUNTY IN SOUTHEAST KANSAS...
  SOUTHWESTERN JASPER COUNTY IN SOUTHWEST MISSOURI...
  THIS INCLUDES THE CITY OF JOPLIN...

* UNTIL 600 PM CDT.

* AT 514 PM CDT...A TORNADO EMERGENCY FOR THE CITY OF JOPLIN.
  A CONFIRMED LARGE AND DESTRUCTIVE TORNADO WAS LOCATED NEAR
  BAXTER SPRINGS MOVING NORTHEAST AT 40 MPH.

  THIS IS A PARTICULARLY DANGEROUS SITUATION.

  HAZARD...DEADLY TORNADO AND BASEBALL SIZE HAIL
  
  SOURCE...SPOTTERS AND LAW ENFORCMENT CONFIRMED TORNADO.
           SIGNIFICANT DAMAGE TO HOMES REPORTED IN THE OAKS
           SUBDIVISION. 
  
  IMPACT...LIFE THREATING SITUATION. EXTENSIVE DAMAGE TO HOMES
           AND BUILDINGS...UPROOTED TREES AND DEBRIS WILL
           RESTRICT ACCESS INTO MANY AREAS.

* OTHER LOCATIONS IN THE WARNING...JOPLIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN OR NEAR JOPLIN TAKE COVER IMMEDIATELY!

&&

LAT...LON 3716 9479 3707 9426 3697 9430 3701 9479
TIME...MOT...LOC 2216Z 247DEG 36KT 3708 9470

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CATASTROPHIC
HAIL...2.75IN
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