Alert archive / Colorado / Tornado Warnings in 2017

Tornado Warning 1, NWS Pueblo, CO

May 8, 2017Custer County, Huerfano County, Pueblo County, Colorado

NWS Pueblo, CO issued this tornado warning at May 8, 2017, 2:20 PM MDT for Custer County, Huerfano County, Pueblo County, Colorado. It was in force for 25 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 8, 2017, 2:20 PM MDT (20:20 UTC)
Expired: May 8, 2017, 2:45 PM MDT
In force: 25 min
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Custer County, CO, Huerfano County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 97 km from the middle of the area, began a volume at 20:23 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 8, 12:35 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 8.3 hours before the alert went out and 268 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: 2189 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

509 
WFUS55 KPUB 082020
TORPUB
COC027-055-101-082045-
/O.NEW.KPUB.TO.W.0001.170508T2020Z-170508T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pueblo CO
220 PM MDT MON MAY 8 2017

The National Weather Service in Pueblo has issued a

* Tornado Warning for...
  North central Huerfano County in southeastern Colorado...
  Southeastern Custer County in southeastern Colorado...
  Southwestern Pueblo County in southeastern Colorado...

* Until 245 PM MDT
    
* At 220 PM MDT, a severe thunderstorm capable of producing a tornado
  was located over Greenhorn Mountain, or 34 miles southwest of
  Pueblo, moving north at 15 mph.

  HAZARD...Tornado and golf ball size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This tornadic thunderstorm will remain over mainly rural areas of
  north central Huerfano...southeastern Custer and southwestern
  Pueblo Counties, including the following locations: San Isabel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3786 10501 3785 10507 3799 10525 3803 10493
TIME...MOT...LOC 2020Z 174DEG 14KT 3791 10505 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

lw

2 follow-up statements

852 
WWUS55 KPUB 082031
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
231 PM MDT MON MAY 8 2017

COC027-055-101-082045-
/O.CON.KPUB.TO.W.0001.000000T0000Z-170508T2045Z/
Huerfano CO-Custer CO-Pueblo CO-
231 PM MDT MON MAY 8 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM MDT FOR NORTH
CENTRAL HUERFANO...EASTERN CUSTER AND SOUTHWESTERN PUEBLO COUNTIES...
    
At 230 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Greenhorn Mountain, or 32 miles southwest of Pueblo,
moving north at 15 mph.

HAZARD...Tornado and golf ball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
San Isabel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3794 10502 3793 10508 3799 10521 3803 10493
TIME...MOT...LOC 2030Z 174DEG 14KT 3795 10506 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

lw

610 
WWUS55 KPUB 082053
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
253 PM MDT MON MAY 8 2017

COC027-055-101-082100-
/O.EXP.KPUB.TO.W.0001.000000T0000Z-170508T2045Z/
Huerfano CO-Custer CO-Pueblo CO-
253 PM MDT MON MAY 8 2017

...THE TORNADO WARNING FOR NORTH CENTRAL HUERFANO...EASTERN CUSTER
AND SOUTHWESTERN PUEBLO COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened and no longer 
appears capable of producing a tornado. Therefore the warning has 
been allowed to expire.

A Severe Thunderstorm Warning remains in effect for this storm over 
western Pueblo County.  Golf Ball size hail, 60 mph wind, heavy rain 
and lightning strikes remain possible.

A severe thunderstorm watch remains in effect until 800 PM MDT for
southeastern Colorado.

LAT...LON 3794 10502 3793 10508 3799 10521 3803 10493
TIME...MOT...LOC 2050Z 174DEG 14KT 3802 10507 

$$

lw

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 7, 6:04 PM MDT	Special Weather Statement	PUB	Otero	41 min
May 7, 6:43 PM MDT	Special Weather Statement	PUB	Kiowa	47 min
May 7, 6:46 PM MDT	Special Weather Statement	PUB	Baca	29 min
May 7, 7:24 PM MDT	Special Weather Statement	PUB	Bent	36 min
May 7, 7:59 PM MDT	Special Weather Statement	PUB	Crowley	31 min
May 8, 12:59 PM MDT	Special Weather Statement	PUB	Custer	61 min
May 8, 1:47 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas	58 min
May 8, 2:10 PM MDT	Special Weather Statement	PUB	Custer	80 min
May 8, 2:43 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas	62 min
May 8, 2:47 PM MDT	Severe Thunderstorm Warning	PUB	Pueblo	43 min
May 8, 2:52 PM MDT	Areal Flood Advisory	PUB	Custer, Fremont, Pueblo	3 hr
May 8, 3:22 PM MDT	Severe Thunderstorm Warning	PUB	El Paso, Fremont, Huerfano, Pueblo	38 min
May 8, 3:31 PM MDT	Severe Thunderstorm Warning	PUB	Otero, Pueblo	59 min
May 8, 3:37 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas, Otero, Pueblo	38 min
May 8, 3:54 PM MDT	Severe Thunderstorm Warning	PUB	El Paso, Fremont, Pueblo	66 min
May 8, 4:14 PM MDT	Severe Thunderstorm Warning	PUB	Otero	15 min
May 8, 4:24 PM MDT	Severe Thunderstorm Warning	PUB	Crowley, Otero	23 min
May 8, 4:54 PM MDT	Special Weather Statement	PUB	Custer	51 min
May 8, 5:08 PM MDT	Special Weather Statement	PUB	Otero	52 min
May 8, 5:20 PM MDT	Special Weather Statement	PUB	Gunnison	40 min
May 8, 5:24 PM MDT	Severe Thunderstorm Warning	PUB	Crowley, Otero, Pueblo	36 min

Nearby

Tornado Warnings in Colorado, 2017 Every tornado warning in 2017 Tornadoes 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.