Alert archive / Colorado / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 72, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 22, 2012, 7:28 PM MDT for Logan County, Phillips County, Colorado. It was in force for 47 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
- Jun 22, 2012, 7:28 PM MDT (01:28 UTC)
- Expired
- Jun 22, 2012, 8:15 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Logan County, CO, Phillips County, CO
The radar
The Goodland radar (KGLD), 141 km from the middle of the area, began a volume at 01:30 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 |
|---|---|---|---|
| Jun 22, 7:48 PM MDT | HAIL 1 | 2 W Highland Center, CO |
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 |
|---|---|---|---|
| Jun 22, 3:52 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.5 hours before the alert went out and 100 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
- 5461 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
784 WUUS55 KBOU 230128 SVRBOU COC075-095-230215- /O.NEW.KBOU.SV.W.0072.120623T0128Z-120623T0215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DENVER CO 728 PM MDT FRI JUN 22 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN PHILLIPS COUNTY IN NORTHEAST COLORADO SOUTHEASTERN LOGAN COUNTY IN NORTHEAST COLORADO * UNTIL 815 PM MDT * AT 727 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...AND DAMAGING WINDS UP TO ABOUT 60 MPH. THIS STORM WAS LOCATED 7 MILES SOUTHWEST OF HIGHLAND CENTER...OR 22 MILES SOUTHWEST OF HOLYOKE...MOVING EAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAGES... PAOLI...HOLYOKE AND HIGHLAND CENTER. THIS WARNING REPLACES THE PREVIOUS WARNING THAT WAS IN EFFECT FOR SOUTHEAST LOGAN AND WESTERN PHILLIPS COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. && LAT...LON 4044 10217 4044 10276 4061 10279 4064 10217 TIME...MOT...LOC 0127Z 265DEG 29KT 4047 10264 WIND...HAIL 60MPH 1.50IN $$
2 follow-up statements
830 WWUS55 KBOU 230150 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 750 PM MDT FRI JUN 22 2012 COC075-230158- /O.CAN.KBOU.SV.W.0072.000000T0000Z-120623T0215Z/ LOGAN CO- 750 PM MDT FRI JUN 22 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOGAN COUNTY IS CANCELLED... LAT...LON 4044 10266 4062 10267 4064 10217 4044 10217 TIME...MOT...LOC 0148Z 265DEG 29KT 4048 10242 $$ COC095-230215- /O.CON.KBOU.SV.W.0072.000000T0000Z-120623T0215Z/ PHILLIPS CO- 750 PM MDT FRI JUN 22 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR SOUTHERN PHILLIPS COUNTY... AT 748 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL...2 MILES WEST OF HIGHLANDS CENTER. EARLIER AT 728 MDT...A GUST TO 59 MPH WAS MEASURED 1 MILE NORTH OF ST. PETERSBURG. THIS STORM WAS LOCATED 7 MILES SOUTH OF WAGES...OR 10 MILES SOUTHWEST OF HOLYOKE...MOVING EAST AT 30 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAGES...PAOLI...HOLYOKE AND HIGHLAND CENTER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. && LAT...LON 4044 10266 4062 10267 4064 10217 4044 10217 TIME...MOT...LOC 0148Z 265DEG 29KT 4048 10242 WIND...HAIL 60MPH 1.50IN $$
196 WWUS55 KBOU 230216 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 816 PM MDT FRI JUN 22 2012 COC095-230225- /O.EXP.KBOU.SV.W.0072.000000T0000Z-120623T0215Z/ PHILLIPS CO- 816 PM MDT FRI JUN 22 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PHILLIPS COUNTY HAS EXPIRED... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE AREA. STRONG WINDS AND LARGE HAIL WILL STILL BE POSSIBLE AS THE STORM MOVES ACROSS NORTHERN YUMA COUNTY. LAT...LON 4044 10266 4062 10267 4064 10217 4044 10217 TIME...MOT...LOC 0215Z 264DEG 17KT 4047 10242 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 7:06 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips | 24 min |
| Jun 23, 3:42 PM MDT | Red Flag Warning | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 30 hr |
Nearby
Severe Thunderstorm Warnings in Colorado, 2012Every severe thunderstorm 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.