Alert archive / Colorado / Tornado Warnings in 2012
Tornado Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 5, 2012, 6:32 PM MDT for Logan County, Colorado. It was in force for 43 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 5, 2012, 6:32 PM MDT (00:32 UTC)
- Expired
- May 5, 2012, 7:15 PM MDT
- In force
- 43 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Logan County, CO
The radar
The Cheyenne radar (KCYS), 148 km from the middle of the area, began a volume at 00:34 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 5, 7:00 PM MDT | HAIL 1.25 | Nnw Peetz, CO | ALSO REPORTED SEVERAL FUNNELS LOOKING TOWARD POTTER, NE |
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 00:00Z, 0.5 hours before the alert went out and 118 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
- 102 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 3786 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
657 WFUS55 KBOU 060032 TORBOU COC075-060115- /O.NEW.KBOU.TO.W.0004.120506T0032Z-120506T0115Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 632 PM MDT SAT MAY 5 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... NORTH CENTRAL LOGAN COUNTY IN NORTHEAST COLORADO * UNTIL 715 PM MDT * AT 632 PM MDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED A FUNNEL CLOUD 10 MILES SOUTH OF POTTER. THIS STORM WAS MOVING SOUTHEAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PROCTOR AND PEETZ. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. && LAT...LON 4100 10288 4076 10280 4085 10329 4100 10348 TIME...MOT...LOC 0032Z 305DEG 27KT 4101 10330 $$
3 follow-up statements
330 WWUS55 KBOU 060046 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 646 PM MDT SAT MAY 5 2012 COC075-060115- /O.CON.KBOU.TO.W.0004.000000T0000Z-120506T0115Z/ LOGAN CO- 646 PM MDT SAT MAY 5 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM MDT FOR NORTH CENTRAL LOGAN COUNTY... AT 644 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 6 MILES WEST OF PEETZ...OR 23 MILES NORTH OF STERLING. THIS STORM WAS MOVING SOUTHEAST AT 30 MPH. THIS STORM IS INTENSIFYING AND LARGE HAIL IS ALSO POSSIBLE WITH THIS STORM. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PROCTOR AND PEETZ. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. && LAT...LON 4100 10288 4076 10280 4085 10329 4100 10348 TIME...MOT...LOC 0044Z 305DEG 27KT 4096 10320 $$
338 WWUS55 KBOU 060058 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 658 PM MDT SAT MAY 5 2012 COC075-060115- /O.CON.KBOU.TO.W.0004.000000T0000Z-120506T0115Z/ LOGAN CO- 658 PM MDT SAT MAY 5 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM MDT FOR NORTH CENTRAL LOGAN COUNTY... AT 657 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 1 MILE EAST OF PEETZ...OR 24 MILES NORTH OF STERLING. THIS STORM WAS MOVING SOUTHEAST AT 30 MPH. THIS STORM IS ALSO CAPABLE OF PRODUCING HAIL THE SIZE OF A BASEBALL. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PROCTOR AND PEETZ. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. && LAT...LON 4100 10288 4076 10280 4085 10326 4099 10336 TIME...MOT...LOC 0057Z 300DEG 27KT 4096 10306 $$
917 WWUS55 KBOU 060112 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 712 PM MDT SAT MAY 5 2012 COC075-060122- /O.EXP.KBOU.TO.W.0004.000000T0000Z-120506T0115Z/ LOGAN CO- 712 PM MDT SAT MAY 5 2012 ...THE TORNADO WARNING FOR NORTH CENTRAL LOGAN COUNTY WILL EXPIRE AT 715 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. HEAVY RAIN AND SMALL HAIL ARE STILL POSSIBLE WITH THIS STORM. LAT...LON 4100 10288 4076 10280 4085 10326 4099 10336 TIME...MOT...LOC 0112Z 295DEG 24KT 4095 10300 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 7:39 PM MDT | Special Weather Statement | BOU | Weld | 51 min |
| May 5, 8:20 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 25 min |
| May 5, 9:29 PM MDT | Special Weather Statement | BOU | Denver | 46 min |
| May 5, 9:56 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 49 min |
| May 5, 10:39 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Weld | 51 min |
Nearby
Tornado Warnings in Colorado, 2012Every tornado warning in 2012Tornadoes in 2012
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.