Alert archive / Colorado / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 113, NWS Denver/Boulder, CO

August 10, 2017Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 10, 2017, 4:43 PM MDT for Lincoln County, Colorado. It was in force for 32 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: Aug 10, 2017, 4:43 PM MDT (22:43 UTC)
Expired: Aug 10, 2017, 5:15 PM MDT
In force: 32 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 57 km from the middle of the area, began a volume at 22:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 10, 3:52 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.7 hours before the alert went out and 146 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2 J/kg
Mixed-layer CIN: -251 J/kg
Mixed-layer LCL: 866 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

346 
WUUS55 KBOU 102243
SVRBOU
COC073-102315-
/O.NEW.KBOU.SV.W.0113.170810T2243Z-170810T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
443 PM MDT THU AUG 10 2017

The National Weather Service in Denver Colorado has issued a

* Severe Thunderstorm Warning for...
  Southeastern Lincoln County in east central Colorado...

* Until 515 PM MDT

* At 443 PM MDT, a severe thunderstorm was located near Forder, or 39
  miles south of Limon, moving southeast at 30 mph.

  HAZARD...Golf ball size hail. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect 
           damage to roofs, siding, windows, and vehicles. 

* Locations impacted include...
  Forder and Wild Horse Point. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3852 10367 3865 10388 3881 10375 3857 10318
      3852 10322 3853 10347 3852 10351
TIME...MOT...LOC 2243Z 303DEG 27KT 3870 10374 

HAIL...1.75IN
WIND...<50MPH
 
$$

BOWEN

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 2:03 PM MDT	Special Weather Statement	BOU	Larimer	42 min
Aug 10, 2:28 PM MDT	Severe Thunderstorm Warning	BOU	Larimer	36 min
Aug 10, 2:31 PM MDT	Flash Flood Warning	BOU	Larimer	119 min
Aug 10, 3:02 PM MDT	Severe Thunderstorm Warning	BOU	Larimer, Weld	43 min
Aug 10, 3:07 PM MDT	Areal Flood Advisory	BOU	Larimer, Weld	83 min
Aug 10, 3:18 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Denver, Jefferson	42 min
Aug 10, 3:54 PM MDT	Special Weather Statement	BOU	Weld	51 min
Aug 10, 3:54 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	51 min
Aug 10, 4:01 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	17 min
Aug 10, 4:06 PM MDT	Special Weather Statement	BOU	Denver	39 min
Aug 10, 4:13 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe, Morgan, Weld	47 min
Aug 10, 4:23 PM MDT	Special Weather Statement	BOU	Lincoln	52 min
Aug 10, 4:37 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln, Washington	38 min
Aug 10, 4:40 PM MDT	Areal Flood Advisory	BOU	Weld	65 min
Aug 10, 4:48 PM MDT	Tornado Warning	BOU	Adams, Arapahoe	27 min
Aug 10, 5:07 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln, Washington	25 min
Aug 10, 5:12 PM MDT	Areal Flood Advisory	BOU	Lincoln	93 min
Aug 10, 5:18 PM MDT	Special Weather Statement	BOU	Washington	27 min
Aug 10, 5:24 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	16 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2017 Every severe thunderstorm warning in 2017

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.