Alert archive / Colorado / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 25, NWS Denver/Boulder, CO

May 24, 2016Adams County, Morgan County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 24, 2016, 4:36 PM MDT for Adams County, Morgan County, Colorado. It was in force for 24 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: May 24, 2016, 4:36 PM MDT (22:36 UTC)
Expired: May 24, 2016, 5:00 PM MDT
In force: 24 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Adams County, CO, Morgan County, CO

The radar

The Denver radar (KFTG), 44 km from the middle of the area, began a volume at 22:38 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
May 24, 12:45 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.6 hours before the alert went out and 74 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1378 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

829 
WUUS55 KBOU 242236
SVRBOU
COC001-087-242300-
/O.NEW.KBOU.SV.W.0025.160524T2236Z-160524T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
436 PM MDT TUE MAY 24 2016

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MORGAN COUNTY IN NORTHEASTERN COLORADO...
  NORTHEASTERN ADAMS COUNTY IN NORTHEASTERN COLORADO...

* UNTIL 500 PM MDT

* AT 434 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES WEST OF
  LEADER...OR 32 MILES SOUTHWEST OF FORT MORGAN...MOVING EAST AT 25
  MPH.

  HAZARD...HALF DOLLAR SIZE HAIL. 

  SOURCE...TRAINED WEATHER SPOTTERS. A SPOTTER IN STRASBURG REPORTED
           ONE INCH DIAMETER HAIL AT 430 PM MDT. WEB CAMERAS VIEWING
           THIS STORM HAVE ALSO SHOWN BRIEF FUNNEL CLOUD DEVELOPMENT
           ON THE SOUTHERN EDGE OF THIS THUNDERSTORM. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...
  HOYT AND LEADER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY AND MOVE TO A
PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

BRIEF HEAVY RAIN MAY ALSO PRODUCE LOCALIZED FLOODING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR NORTHEASTERN
COLORADO.

LAT...LON 3991 10385 3982 10427 4000 10433 4000 10415
      4008 10415 4014 10403
TIME...MOT...LOC 2234Z 250DEG 20KT 3995 10424 

HAIL...1.25IN
WIND...<50MPH

$$

DANKERS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 1:30 AM MDT	Severe Thunderstorm Warning	BOU	Washington	30 min
May 24, 1:30 PM MDT	Severe Thunderstorm Warning	BOU	Jefferson	30 min
May 24, 1:59 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Broomfield, Jefferson	31 min
May 24, 2:05 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Denver	25 min
May 24, 2:30 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Broomfield, Weld	45 min
May 24, 2:43 PM MDT	Severe Thunderstorm Warning	BOU	Weld	47 min
May 24, 3:58 PM MDT	Severe Thunderstorm Warning	BOU	Adams	32 min
May 24, 4:58 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan	32 min
May 24, 5:18 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Washington	27 min
May 24, 5:31 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan	29 min
May 24, 5:44 PM MDT	Tornado Warning Tornado observed	BOU	Adams, Morgan	31 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2016 Every severe thunderstorm warning in 2016

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.