Alert archive / Colorado / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 2, NWS Denver/Boulder, CO

May 7, 2016Arapahoe County, Elbert County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 7, 2016, 1:14 PM MDT for Arapahoe County, Elbert County, Colorado. It was in force for 31 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 7, 2016, 1:14 PM MDT (19:14 UTC)
Expired: May 7, 2016, 1:45 PM MDT
In force: 31 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

Counties Arapahoe County, CO, Elbert County, CO

The radar

The Denver radar (KFTG), 38 km from the middle of the area, began a volume at 19:13 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 7, 12:31 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 7.2 hours before the alert went out and 114 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: 5 J/kg
Mixed-layer CIN: -219 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

126 
WUUS55 KBOU 071914
SVRBOU
COC005-039-071945-
/O.NEW.KBOU.SV.W.0002.160507T1914Z-160507T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
114 PM MDT SAT MAY 7 2016

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL ARAPAHOE COUNTY IN NORTHEASTERN COLORADO...
  NORTHWESTERN ELBERT COUNTY IN EAST CENTRAL COLORADO...

* UNTIL 145 PM MDT

* AT 114 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTHEAST
  OF ELIZABETH...OR 31 MILES SOUTHEAST OF DENVER...MOVING NORTHEAST AT
  35 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  KIOWA AND PONDEROSA PARK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MDT FOR NORTHEASTERN
COLORADO.

LAT...LON 3931 10446 3945 10465 3966 10444 3955 10425
TIME...MOT...LOC 1914Z 215DEG 29KT 3943 10452 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH

$$

RPK

2 follow-up statements

208 
WWUS55 KBOU 071924
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
124 PM MDT SAT MAY 7 2016

COC005-039-071945-
/O.CON.KBOU.SV.W.0002.000000T0000Z-160507T1945Z/
ARAPAHOE CO-ELBERT CO-
124 PM MDT SAT MAY 7 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM MDT
FOR SOUTH CENTRAL ARAPAHOE AND NORTHWESTERN ELBERT COUNTIES...

AT 123 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES NORTH OF
KIOWA...OR 31 MILES SOUTHEAST OF DENVER...MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
KIOWA AND PONDEROSA PARK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MDT FOR NORTHEASTERN
COLORADO.

LAT...LON 3931 10446 3945 10465 3966 10444 3955 10425
TIME...MOT...LOC 1923Z 215DEG 29KT 3950 10446 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH

$$

RPK

630 
WWUS55 KBOU 071941
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
141 PM MDT SAT MAY 7 2016

COC005-039-071951-
/O.EXP.KBOU.SV.W.0002.000000T0000Z-160507T1945Z/
ARAPAHOE CO-ELBERT CO-
141 PM MDT SAT MAY 7 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ARAPAHOE AND
NORTHWESTERN ELBERT COUNTIES WILL EXPIRE AT 145 PM MDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MDT FOR NORTHEASTERN
COLORADO.

LAT...LON 3931 10446 3945 10465 3966 10444 3955 10425
TIME...MOT...LOC 1940Z 215DEG 29KT 3950 10446 

$$

RPK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 6:40 PM MDT	Special Weather Statement	BOU	Clear Creek	50 min
May 7, 11:36 AM MDT	Special Weather Statement	BOU	Jackson	24 min
May 7, 12:41 PM MDT	Special Weather Statement	BOU	Douglas	34 min
May 7, 12:55 PM MDT	Tornado Warning	BOU	Elbert	22 min
May 7, 1:29 PM MDT	Tornado Warning	BOU	Arapahoe, Elbert	16 min
May 7, 1:43 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	32 min
May 7, 2:08 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert	52 min
May 7, 2:10 PM MDT	Severe Thunderstorm Warning	BOU	Weld	35 min
May 7, 2:14 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	31 min
May 7, 2:17 PM MDT	Severe Thunderstorm Warning	BOU	Adams	28 min
May 7, 2:31 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	29 min
May 7, 2:35 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	40 min
May 7, 2:46 PM MDT	Tornado Warning	BOU	Morgan, Weld	29 min
May 7, 3:03 PM MDT	Severe Thunderstorm Warning	BOU	Washington	27 min
May 7, 3:12 PM MDT	Tornado Warning	BOU	Morgan, Weld	33 min
May 7, 3:34 PM MDT	Tornado Warning	BOU	Morgan	26 min
May 7, 3:36 PM MDT	Tornado Warning Tornado observed	BOU	Weld	24 min
May 7, 3:54 PM MDT	Tornado Warning	BOU	Weld	36 min
May 7, 3:58 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan	32 min
May 7, 4:39 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Washington	36 min
May 7, 4:47 PM MDT	Areal Flood Advisory	BOU	Adams, Morgan, Washington	3 hr
May 7, 5:17 PM MDT	Severe Thunderstorm Warning	BOU	Washington	28 min
May 7, 5:44 PM MDT	Severe Thunderstorm Warning	BOU	Phillips	31 min
May 7, 5:54 PM MDT	Severe Thunderstorm Warning	BOU	Washington	36 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.