Tornado Warning 21, NWS Denver/Boulder, CO

Issued

Jun 10, 2009, 4:43 PM MDT (22:43 UTC)

Expired

Jun 10, 2009, 5:19 PM MDT

In force

36 min

Issued by

NWS Denver/Boulder, CO

Area

Storm-based polygon

County Weld County, CO

The Denver radar (KFTG), 52 km from the middle of the area, began a volume at 22:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

000 
WFUS55 KBOU 102243
TORBOU
COC123-102330-
/O.NEW.KBOU.TO.W.0021.090610T2243Z-090610T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
443 PM MDT WED JUN 10 2009

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL WELD COUNTY IN NORTHEAST COLORADO

* UNTIL 530 PM MDT

* AT 441 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED   
  TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 
  MILES NORTH OF ROGGEN...OR 22 MILES SOUTHEAST OF GREELEY. THIS     
  STORM WAS MOVING EAST AT 10 MPH. IN ADDITION...THUNDERSTORMS       
  DEVELOPING RAPIDLY ALONG A LINE SOUTH OF THIS STORM MAY ALSO       
  BE PRODUCING FUNNEL CLOUDS.  

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROGGEN...
  RIVERSIDE RESERVOIR AND PROSPECT VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AT LEAST 2 INCHES IN DIAMETER AND DESTRUCTIVE STRAIGHT 
LINE WINDS.

&&

LAT...LON 4034 10416 4001 10416 4001 10451 4036 10443
TIME...MOT...LOC 2241Z 285DEG 7KT 4027 10437

$$


BAKER

000 
WWUS55 KBOU 102316
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
516 PM MDT WED JUN 10 2009

COC123-102322-
/O.CAN.KBOU.TO.W.0021.000000T0000Z-090610T2330Z/
WELD CO-
516 PM MDT WED JUN 10 2009

...THE TORNADO WARNING FOR SOUTH CENTRAL WELD COUNTY IS CANCELLED...

THE THUNDERSTORMS THAT PROMPTED THE WARNING IN SOUTHEAST WELD COUNTY 
NEAR ROGGEN WAS NO LONGER INDICATING A TORNADO. HOWEVER WEATHER 
SERVICE DOPPLER RADAR CONTINUED TO INDICATE STORMS IN THE AREA 
CAPABLE OF PRODUCING HAIL AT LEAST ONE INCH IN DIAMETER AND VERY 
HEAVY RAINFALL. 

LAT...LON 4034 10416 4001 10416 4001 10451 4036 10443
TIME...MOT...LOC 2312Z 285DEG 7KT 4025 10429

$$


BAKER

000 
WWUS55 KBOU 102319 CCA
SVSBOU

SEVERE WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE DENVER CO
519 PM MDT WED JUN 10 2009

CORRECTED EXPECTED HAIL SIZE

COC123-102322-
/O.CAN.KBOU.TO.W.0021.000000T0000Z-090610T2330Z/
WELD CO-
519 PM MDT WED JUN 10 2009

...THE TORNADO WARNING FOR SOUTH CENTRAL WELD COUNTY IS CANCELLED...

THE THUNDERSTORMS THAT PROMPTED THE WARNING IN SOUTHEAST WELD COUNTY 
NEAR ROGGEN WAS NO LONGER INDICATING A TORNADO. HOWEVER WEATHER 
SERVICE DOPPLER RADAR CONTINUED TO INDICATE STORMS IN THE AREA 
CAPABLE OF PRODUCING HAIL UP TO THREE QUARTERS OF AN INCH IN 
DIAMETER AND VERY HEAVY RAINFALL. 

LAT...LON 4034 10416 4001 10416 4001 10451 4036 10443
TIME...MOT...LOC 2312Z 285DEG 7KT 4025 10429

$$


BAKER

Tornado Warnings in Colorado, 2009Every tornado warning in 2009Tornadoes in 2009

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.