Alert archive / Colorado / High Wind Warnings in 2012
High Wind Warning 13, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind warning at Oct 18, 2012, 3:42 AM MDT for 5 counties in Colorado. It took effect at Oct 18, 2012, 9:00 AM MDT. It was in force for 9 hr. 5 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Oct 18, 2012, 3:42 AM MDT (09:42 UTC)
- In effect from
- Oct 18, 2012, 9:00 AM MDT
- Expired
- Oct 18, 2012, 6:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 150 km from the middle of the area, began a volume at 09:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 18, 10:00 AM MDT | NON-TSTM WND GST 64 | Crook, CO | |
| Oct 18, 10:14 AM MDT | NON-TSTM WND GST 64 | Crook, CO | |
| Oct 18, 11:30 AM MDT | NON-TSTM WND GST 68 | 4 E Haxtun, CO | STRONG WINDS PRODUCED CONSIDERABLE BLOWING DUST...VISIBILITY NEAR ZERO. |
| Oct 18, 11:42 AM MDT | NON-TSTM WND GST 63 | Holyoke, CO | |
| Oct 18, 12:52 PM MDT | NON-TSTM WND DMG | 11 Ese Holyoke, CO | TREES UPROOTED |
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, 9.7 hours before the alert went out and 76 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
- 3596 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 290 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
307 WWUS75 KBOU 180942 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 342 AM MDT THU OCT 18 2012 ...STRONG NORTHWEST WINDS EXPECTED OVER THE FAR NORTHEAST PLAINS OF NORTHEAST COLORADO LATE THIS MORNING THROUGH THE AFTERNOON... COZ042-048>051-181745- /O.NEW.KBOU.HW.W.0013.121018T1500Z-121019T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 342 AM MDT THU OCT 18 2012 ...HIGH WIND WARNING IN EFFECT FROM 9 AM THIS MORNING TO 6 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM MDT THIS EVENING. * TIMING...STRONG NORTHWEST WINDS WILL DEVELOP BY LATE MORNING. * WINDS...NORTHWEST 25 TO 40 MPH WITH GUSTS TO 60 MPH. * IMPACTS...MOTORISTS AND DRIVERS OF HIGH PROFILE VEHICLES SHOULD BE ALERT FOR DANGEROUS CROSS WINDS. AREAS OF BLOWING DUST MAY ALSO DEVELOP...CAUSING POOR VISIBILITY AT TIMES. UNSECURED ITEMS LIKE LAWN FURNITURE AND TRASH CANS MAY ALSO BE PICKED UP AND MOVED BY THE GUSTY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. && $$
2 follow-up statements
413 WWUS75 KBOU 181619 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1019 AM MDT THU OCT 18 2012 ...STRONG NORTHWEST WINDS OCCURRING OVER THE FAR NORTHEAST PLAINS OF NORTHEAST COLORADO WILL CONTINUE THROUGH THE AFTERNOON... STRONG NORTHWEST WINDS HAVE ALREADY PRODUCED AN EXTENSIVE REGION OF BLOW DUST ACROSS SOUTHWESTERN NEBRASKA AND NORTHWESTERN KANSAS. ACROSS NORTHEAST COLORADO SIMILAR CONDITIONS WILL OCCUR... ESPECIALLY EAST OF A STERLING TO AKRON LINE. COZ042-048>051-190000- /O.CON.KBOU.HW.W.0013.000000T0000Z-121019T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 1019 AM MDT THU OCT 18 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * TIMING...STRONG NORTHWEST WINDS WILL CONTINUE THROUGH THE DAY. * WINDS...NORTHWEST 25 TO 40 MPH WITH GUSTS TO 65 MPH. * VISIBILITY...VISIBILITIES WILL DROP DOWN TO ZERO AT TIMES ESPECIALLY NEAR OPEN FIELDS CAUSING SUDDEN BROWNOUT CONDITIONS. * IMPACTS...MOTORISTS AND DRIVERS OF HIGH PROFILE VEHICLES SHOULD BE ALERT FOR DANGEROUS CROSS WINDS AND ZERO VISIBILITIES. UNSECURED ITEMS LIKE LAWN FURNITURE AND TRASH CANS MAY ALSO BE PICKED UP AND MOVED BY THE GUSTY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY DAMAGING WINDS ARE OCCURRING OR HIGHLY LIKELY. && $$
100 WWUS75 KBOU 182354 NPWBOU URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 554 PM MDT THU OCT 18 2012 COZ042-048>051-190100- /O.EXP.KBOU.HW.W.0013.000000T0000Z-121019T0000Z/ NORTHEAST WELD COUNTY-LOGAN COUNTY-WASHINGTON COUNTY- SEDGWICK COUNTY-PHILLIPS COUNTY- INCLUDING THE CITIES OF...BRIGGSDALE...GROVER...PAWNEE BUTTES... RAYMER...STONEHAM...CROOK...MERINO...STERLING...PEETZ...AKRON... COPE...LAST CHANCE...OTIS...JULESBURG...OVID...SEDGWICK... AMHERST...HAXTUN...HOLYOKE 554 PM MDT THU OCT 18 2012 ...HIGH WIND WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... THE HIGH WIND WARNING FOR A LARGE PORTION OF NORTHEAST COLORADO WILL BE ALLOWED TO EXPIRE AS OF 6 PM MDT THIS EVENING. WIND SPEEDS ON THE PLAINS OF NORTHEAST COLORADO CONTINUE TO DECREASE AND ARE EXPECTED TO DIMINISH BELOW 30 MPH IN THE NEXT HOUR. EARLIER TODAY STRONG NORTHWEST WINDS OF 55 TO 68 MPH BUFFETED THE PLAINS OF NORTHEAST COLORADO CAUSING CONSIDERABLE BLOWING DUST IN OPEN AREAS. SIMILAR WIND SPEEDS WERE ALSO OBSERVED IN THE NORTHERN FRONT RANGE. THE TIGHT PRESSURE GRADIENT THAT WAS PRODUCED BY A STRONG LOW PRESSURE TROUGH TO OUR EAST AND A HIGH PRESSURE RIDGE BUILDING TO OUR WEST WAS LARGELY TO BLAME FOR THE STRONG AND GUSTY WINDS ON THE NORTHEAST PLAINS AND NORTHERN FRONT RANGE OF COLORADO EARLIER TODAY. $$ BAKER
Nearby
High Wind Warnings in Colorado, 2012Every high wind warning 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.