Alert archive / Colorado / Tornado Warnings in 2007
Tornado Warning 35, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 14, 2007, 6:57 PM MDT for Adams County, Weld County, Colorado. It was in force for 48 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 14, 2007, 6:57 PM MDT (00:57 UTC)
- Expired
- May 14, 2007, 7:45 PM MDT
- In force
- 48 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
Counties Adams County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 37 km from the middle of the area, began a volume at 00:56 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 14, 7:05 PM MDT | HAIL 1 | Prospect Valley, CO | HAIL RANGED FROM 3/4 TO 1 INCH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 14, 2:57 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.0 hours before the alert went out and 101 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
- 774 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1671 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KBOU 150057 TORBOU COC001-123-150145- /O.NEW.KBOU.TO.W.0035.070515T0057Z-070515T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 657 PM MDT MON MAY 14 2007 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO SOUTH CENTRAL WELD COUNTY IN NORTHEAST COLORADO * UNTIL 745 PM MDT * AT 657 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PROSPECT VALLEY...OR ABOUT 29 MILES SOUTHEAST OF GREELEY. THIS STORM WAS MOVING EAST AT 15 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROGGEN... PROSPECT VALLEY AND KEENESBURG. 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 4029 10449 3985 10457 3975 10418 4028 10416 $$ ENTREKIN
2 follow-up statements
000 WWUS55 KBOU 150110 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 707 PM MDT MON MAY 14 2007 COC001-123-150145- /O.CON.KBOU.TO.W.0035.000000T0000Z-070515T0145Z/ ADAMS CO-WELD CO- 707 PM MDT MON MAY 14 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR SOUTH CENTRAL WELD AND CENTRAL ADAMS COUNTIES... AT 707 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 5 MILES SOUTHEAST OF PROSPECT VALLEY...OR ABOUT 32 MILES SOUTHWEST OF FORT MORGAN. THIS STORM WAS MOVING EAST AT 20 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROGGEN...PROSPECT VALLEY AND KEENESBURG. GOLF BALL SIZED HAIL HAS ALSO BEEN REPORTED WITH THIS STORM IN HUDSON. VERY HEAVY RAIN AND MINOR FLOODING MAY ALSO BE POSSIBLE AS THIS STORM TRACKS ACROSS SOUTHEAST WELD COUNTY. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4029 10449 3985 10457 3975 10418 4028 10416 $$ ENTREKIN
000 WWUS55 KBOU 150135 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 732 PM MDT MON MAY 14 2007 COC001-123-150145- /O.CON.KBOU.TO.W.0035.000000T0000Z-070515T0145Z/ ADAMS CO-WELD CO- 732 PM MDT MON MAY 14 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR SOUTH CENTRAL WELD AND CENTRAL ADAMS COUNTIES... AT 732 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 12 MILES EAST OF PROSPECT VALLEY...OR ABOUT 28 MILES SOUTHWEST OF FORT MORGAN. THIS STORM WAS MOVING EAST AT 20 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROGGEN...PROSPECT VALLEY AND KEENESBURG. HAIL UP TO GOLF BALL SIZE ALONG WITH VERY HEAVY RAIN IS POSSIBLE WITH THIS STORM. 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 4029 10449 3985 10457 3975 10418 4028 10416 $$ ENTREKIN
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 6:11 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 64 min |
| May 14, 6:23 PM MDT | Tornado Warning | BOU | Weld | 52 min |
| May 14, 7:15 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Jefferson | 60 min |
| May 14, 7:27 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 33 min |
| May 14, 7:46 PM MDT | Tornado Warning | BOU | Adams, Morgan | 29 min |
| May 14, 7:55 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 47 min |
| May 14, 8:19 PM MDT | Tornado Warning | BOU | Adams, Washington | 41 min |
| May 14, 8:25 PM MDT | Tornado Warning | BOU | Arapahoe, Elbert | 33 min |
| May 14, 8:52 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 53 min |
Nearby
Tornado Warnings in Colorado, 2007Every tornado warning in 2007Tornadoes in 2007
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.