Alert archive / Colorado / Tornado Warnings in 2009
Tornado Warning 3, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 24, 2009, 2:05 PM MDT for Adams County, Denver County, Colorado. It was in force for 25 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 24, 2009, 2:05 PM MDT (20:05 UTC)
- Expired
- May 24, 2009, 2:30 PM MDT
- In force
- 25 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
Counties Adams County, CO, Denver County, CO
The radar
The Denver radar (KFTG), 26 km from the middle of the area, began a volume at 20:09 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 24, 2:12 PM MDT | TORNADO | 2 Ne Commerce City, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.1 hours before the alert went out and 135 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 531 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KBOU 242005 TORBOU COC001-031-242030- /O.NEW.KBOU.TO.W.0003.090524T2005Z-090524T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 205 PM MDT SUN MAY 24 2009 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... WESTERN ADAMS COUNTY IN NORTHEAST COLORADO NORTHEASTERN DENVER COUNTY IN NORTHEAST COLORADO * UNTIL 230 PM MDT * AT 205 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER CENTRAL COMMERCE CITY...OR 8 MILES NORTH OF DENVER. THIS STORM WAS MOVING NORTHEAST AT 10 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRIGHTON... BARR LAKE...DENVER INTERNATIONAL AIRPORT...EASTERN THORNTON... NORTHEASTERN DENVER...COMMERCE CITY AND NORTHWESTERN AURORA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SAFE SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 4000 10490 3999 10459 3976 10470 3976 10499 TIME...MOT...LOC 2005Z 209DEG 12KT 3983 10491 $$ RPK
3 follow-up statements
000 WWUS55 KBOU 242012 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 212 PM MDT SUN MAY 24 2009 COC001-031-242030- /O.CON.KBOU.TO.W.0003.000000T0000Z-090524T2030Z/ ADAMS CO-DENVER CO- 212 PM MDT SUN MAY 24 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR NORTHEASTERN DENVER AND WESTERN ADAMS COUNTIES... AT 211 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED NEAR DERBY...OR 9 MILES NORTHEAST OF DENVER. THIS STORM WAS MOVING NORTHEAST AT 10 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRIGHTON...BARR LAKE...DENVER INTERNATIONAL AIRPORT...EASTERN THORNTON...NORTHEASTERN DENVER...COMMERCE CITY AND NORTHWESTERN AURORA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 4000 10490 3999 10459 3976 10470 3976 10499 TIME...MOT...LOC 2011Z 220DEG 12KT 3984 10489 $$ RPK
000 WWUS55 KBOU 242022 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 222 PM MDT SUN MAY 24 2009 COC001-031-242030- /O.CON.KBOU.TO.W.0003.000000T0000Z-090524T2030Z/ ADAMS CO-DENVER CO- 222 PM MDT SUN MAY 24 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR NORTHEASTERN DENVER AND WESTERN ADAMS COUNTIES... AT 222 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED OVER NORTH CENTRAL COMMERCE CITY...OR 12 MILES NORTHEAST OF DENVER. THIS STORM WAS MOVING NORTHEAST AT 10 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRIGHTON...BARR LAKE...DENVER INTERNATIONAL AIRPORT...EASTERN THORNTON...NORTHEASTERN DENVER...COMMERCE CITY AND NORTHWESTERN AURORA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 4000 10490 3999 10459 3976 10470 3976 10499 TIME...MOT...LOC 2022Z 220DEG 12KT 3988 10485 $$ RPK
000 WWUS55 KBOU 242032 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 232 PM MDT SUN MAY 24 2009 COC001-031-242042- /O.EXP.KBOU.TO.W.0003.000000T0000Z-090524T2030Z/ ADAMS CO-DENVER CO- 232 PM MDT SUN MAY 24 2009 ...THE TORNADO WARNING FOR NORTHEASTERN DENVER AND WESTERN ADAMS COUNTIES HAS EXPIRED... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. LAT...LON 4000 10490 3999 10459 3976 10470 3976 10499 TIME...MOT...LOC 2022Z 220DEG 12KT 3988 10485 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 1:00 PM MDT | Special Weather Statement | BOU | Denver | 90 min |
| May 24, 1:11 PM MDT | Special Weather Statement | BOU | Denver | 34 min |
| May 24, 1:49 PM MDT | Special Weather Statement | BOU | Adams | 26 min |
| May 24, 1:58 PM MDT | Areal Flood Advisory | BOU | Adams | 92 min |
| May 24, 2:38 PM MDT | Special Weather Statement | BOU | Denver | 37 min |
| May 24, 3:31 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Denver, Douglas, Jefferson | 119 min |
| May 24, 3:45 PM MDT | Special Weather Statement | BOU | Denver | 30 min |
| May 24, 4:17 PM MDT | Special Weather Statement | BOU | Arapahoe | 43 min |
| May 24, 5:27 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Morgan, Weld | 93 min |
Nearby
Tornado Warnings in Colorado, 2009Every tornado warning in 2009Tornadoes in 2009
Sources
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.