Alert archive / Colorado / Tornado Warnings in 2009
Tornado Warning 13, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 8, 2009, 7:37 PM MDT for Logan County, Colorado. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 2009, 7:37 PM MDT (01:37 UTC)
- Expired
- Jun 8, 2009, 8:15 PM MDT
- In force
- 38 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Logan County, CO
The radar
The Cheyenne radar (KCYS), 128 km from the middle of the area, began a volume at 01:39 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.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.6 hours before the alert went out and 105 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
- 361 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 782 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 392 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KBOU 090137 TORBOU COC075-090215- /O.NEW.KBOU.TO.W.0013.090609T0137Z-090609T0215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 737 PM MDT MON JUN 8 2009 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... WEST CENTRAL LOGAN COUNTY IN NORTHEAST COLORADO * UNTIL 815 PM MDT * AT 736 PM MDT...THE PUBLIC REPORTED A FUNNEL CLOUD WITH THIS STORM WHEN IT WAS IN EXTREME EASTERN WELD COUNTY AT 7:27 PM. STORM WAS MOVING EAST AT 20 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WESTPLAINS...NORTH STERLING RESERVOIR AND NORTH CENTRAL STERLING. 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 4093 10322 4063 10321 4068 10357 4087 10356 TIME...MOT...LOC 0136Z 270DEG 19KT 4078 10356 $$ RJK
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 7:10 PM MDT | Tornado Warning | BOU | Weld | 35 min |
| Jun 8, 8:15 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 32 min |
| Jun 8, 9:08 PM MDT | Special Weather Statement | BOU | Logan | 37 min |
| Jun 9, 4:43 PM MDT | Tornado Warning | BOU | Adams, Broomfield, Weld | 32 min |
| Jun 9, 4:51 PM MDT | Tornado Warning | BOU | Logan, Phillips, Sedgwick | 39 min |
| Jun 9, 5:11 PM MDT | Tornado Warning | BOU | Weld | 40 min |
| Jun 9, 5:16 PM MDT | Tornado Warning | BOU | Phillips | 44 min |
| Jun 9, 5:48 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 27 min |
| Jun 9, 5:59 PM MDT | Areal Flood Advisory | BOU | Weld | 91 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.