Alert archive / Colorado / Tornado Warnings in 2017

Tornado Warning 11, NWS Pueblo, CO

August 8, 2017Baca County, Bent County, Colorado

NWS Pueblo, CO issued this tornado warning at Aug 8, 2017, 5:50 PM MDT for Baca County, Bent 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
Aug 8, 2017, 5:50 PM MDT (23:50 UTC)
Expired
Aug 8, 2017, 6:15 PM MDT
In force
25 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

Counties Baca County, CO, Bent County, CO

The radar

The Pueblo radar (KPUX), 138 km from the middle of the area, began a volume at 23:51 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.

IssuedProductOfficeLasted
Aug 8, 2:42 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 11.8 hours before the alert went out and 245 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2017-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2017-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
779 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

030 
WFUS55 KPUB 082350
TORPUB
COC009-011-090015-
/O.NEW.KPUB.TO.W.0011.170808T2350Z-170809T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pueblo CO
550 PM MDT TUE AUG 8 2017

The National Weather Service in Pueblo has issued a

* Tornado Warning for...
  Northwestern Baca County in southeastern Colorado...
  Southeastern Bent County in southeastern Colorado...

* Until 615 PM MDT
    
* At 550 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 22 miles west of Two Buttes Reservoir, or 29 miles
  northwest of Springfield, moving southeast at 10 mph.

  HAZARD...Tornado and half dollar 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
  northwestern Baca and southeastern Bent Counties.

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 3773 10308 3781 10295 3763 10274 3750 10295
TIME...MOT...LOC 2350Z 326DEG 10KT 3771 10300 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

KT
2 follow-up statements
492 
WWUS55 KPUB 082357
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
557 PM MDT TUE AUG 8 2017

COC009-011-090015-
/O.CON.KPUB.TO.W.0011.000000T0000Z-170809T0015Z/
Baca CO-Bent CO-
557 PM MDT TUE AUG 8 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
NORTHWESTERN BACA AND SOUTHEASTERN BENT COUNTIES...
    
At 556 PM MDT, a severe thunderstorm capable of producing a tornado
was located 21 miles west of Two Buttes Reservoir, or 28 miles
northwest of Springfield, moving southeast at 10 mph.

HAZARD...Tornado and half dollar 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
northwestern Baca and southeastern Bent Counties.

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 3780 10297 3763 10274 3750 10295 3773 10308
TIME...MOT...LOC 2356Z 326DEG 10KT 3770 10299 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

KT
594 
WWUS55 KPUB 090014
SVSPUB

Severe Weather Statement
National Weather Service Pueblo CO
614 PM MDT TUE AUG 8 2017

COC009-011-090024-
/O.EXP.KPUB.TO.W.0011.000000T0000Z-170809T0015Z/
Baca CO-Bent CO-
614 PM MDT TUE AUG 8 2017

...THE TORNADO WARNING FOR NORTHWESTERN BACA AND SOUTHEASTERN BENT
COUNTIES WILL EXPIRE AT 615 PM MDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  

A severe thunderstorm watch remains in effect until 1100 PM MDT for
southeastern Colorado.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Pueblo.

Remember, a Severe Thunderstorm Warning still remains in effect for
southern Bent and northeast Baca counties.  

LAT...LON 3780 10297 3763 10274 3750 10295 3773 10308
TIME...MOT...LOC 0014Z 326DEG 10KT 3766 10296 

$$

KT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 9:56 PM MDTAreal Flood AdvisoryPUBPueblo2 hr
Aug 8, 1:31 PM MDTSpecial Weather StatementPUBTeller59 min
Aug 8, 1:43 PM MDTSpecial Weather StatementPUBFremont62 min
Aug 8, 1:50 PM MDTSpecial Weather StatementPUBFremont25 min
Aug 8, 2:13 PM MDTSpecial Weather StatementPUBFremont62 min
Aug 8, 2:21 PM MDTSpecial Weather StatementPUBRio Grande24 min
Aug 8, 2:33 PM MDTSevere Thunderstorm WarningPUBCuster, Fremont, Pueblo57 min
Aug 8, 3:08 PM MDTSpecial Weather StatementPUBEl Paso37 min
Aug 8, 3:20 PM MDTSpecial Weather StatementPUBPueblo55 min
Aug 8, 3:44 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas, Otero, Pueblo31 min
Aug 8, 4:13 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas, Otero, Pueblo47 min
Aug 8, 4:22 PM MDTSpecial Weather StatementPUBBent38 min
Aug 8, 4:27 PM MDTSevere Thunderstorm WarningPUBBent, Prowers33 min
Aug 8, 4:43 PM MDTSevere Thunderstorm WarningPUBLas Animas47 min
Aug 8, 4:55 PM MDTSevere Thunderstorm WarningPUBBent, Prowers50 min
Aug 8, 5:22 PM MDTSevere Thunderstorm WarningPUBLas Animas38 min
Aug 8, 5:38 PM MDTSevere Thunderstorm WarningPUBBaca, Bent, Prowers52 min

Nearby

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