Alert archive / Colorado / Special Weather Statements in 2017

Special Weather Statement, NWS Pueblo, CO

July 2, 2017El Paso County, Colorado

NWS Pueblo, CO issued this special weather statement at Jul 2, 2017, 3:29 PM MDT for El Paso County, Colorado. It was in force for 46 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
Jul 2, 2017, 3:29 PM MDT (21:29 UTC)
Expired
Jul 2, 2017, 4:15 PM MDT
In force
46 min
Issued by
NWS Pueblo, CO

County El Paso County, CO

The radar

The Pueblo radar (KPUX), 38 km from the middle of the area, began a volume at 21:31 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 nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 9.5 hours before the alert went out and 163 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 2017-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2017-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.193958Sfc1 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
2 J/kg
Mixed-layer CIN
-482 J/kg
Mixed-layer LCL
3058 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
26 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pueblo, CO wrote its last area forecast discussion before this special weather statement went out at Jul 2, 2:50 PM MDT, 39 minutes earlier.

Area forecast discussion, Jul 2, 2:50 PM MDT, 39 minutes before
Area Forecast Discussion
National Weather Service Pueblo CO
250 PM MDT Sun Jul 2 2017

.SHORT TERM...(This evening through Monday)
Issued at 239 PM MDT Sun Jul 2 2017

An upper level disturbance will be moving acrs the state into the
late night hours.  Have already been seeing some showers and tstms
over the mtns and high valleys this afternoon, but storms are also
expected over the plains this evening, especially in areas near the
KS border.  Low level mstr is a little higher over the far southeast
plains and thus CAPE values are higher.  Deep layer shear is not all
that strong over the far eastern areas, forecast to be 20-30 kts
early this evening. Could see a couple severe storms over the far
eastern plains, with large hail and strong winds being the main
threats. Most locations should see pcpn end by midnight, but could
see some lingering activity near the eastern border a little
later.

The flow aloft on Mon will be west to northwest and pcpn chances
look fairly isold over the mtns and lower elevations.  High temps on
Mon are expected to be in the upper 80s to mid 90s acrs the plains,
and mostly in the lower 80 in the upper Arkansas and San Luis
valleys.

.LONG TERM...(Monday night through Sunday)
Issued at 239 PM MDT Sun Jul 2 2017

No change to the forecast for the extended period. Hot and more
monsoonal conditions are expected, with low ensemble spreads and
good model agreement leading to high forecast confidence.

Monday night into Tuesday...high pressure will build across the
Intermountain West Monday night into Tuesday, while a slow moving
upper disturbance will move across Kansas. Expected showers and
thunderstorms to be ongoing Monday evening across much of the
region. Models indicating a few strong, to perhaps severe, storms
are possible, especially out near the Kansas border. This activity
will quickly spread east into Kansas with dry conditions expected
by Tuesday morning. The high pressure building to the west will
begin to shift eastward into Colorado, with Tuesday being the last
day of northwest flow and possible showers and thunderstorms
across most of the region. Showers and thunderstorms will
initiate over the mountains and spread east through the evening
hours, before clearing to the east and dissipating overnight.

Wednesday through Sunday...high pressure will build across
Colorado for the foreseeable future. This will bring hot
temperatures to the region with mid to upper 90s for highs. Expect
diurnally driven afternoon and evening showers and thunderstorms
over the mountains each day. Lack of steering flow should keep
storms anchored to the terrain. The true monsoonal flow is
forecast to remain over the Great Basin, with perhaps some
movement east by early next week.  Mozley

&&

.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 239 PM MDT Sun Jul 2 2017

VFR conditions are expected at KCOS, KPUB and KALS.  There could be
showers/tstms in the vicinity of the terminal forecast sites this
evening and again on Mon afternoon, causing gusty and erratic
winds.

&&

.PUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...28
LONG TERM...MOZLEY
AVIATION...28
Hazardous weather outlook, Jul 2, 11:49 AM MDT, 3 hours 40 minutes before
Hazardous Weather Outlook
National Weather Service Pueblo CO
1149 AM MDT Sun Jul 2 2017

COZ058>089-093>099-031800-
Western Mosquito Range/East Lake County Above 11000 Ft-
Leadville Vicinity/Lake County Below 11000 Ft-
Eastern Sawatch Mountains above 11000 Ft-
Western Chaffee County Between 9000 and 11000 Ft-
Central Chaffee County Below 9000 Ft-
Western Mosquito Range/East Chaffee County above 9000Ft-
Saguache County West of Continental Divide Below 10000 Ft-
Saguache County East of Continental Divide below 10000 Ft-
La Garita Mountains Above 10000 Ft-
Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Ft-
Eastern San Juan Mountains Above 10000 Ft-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Ft-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Ft-
Southern San Luis Valley-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Ft-
Northern Sangre de Cristo Mountains above 11000 Ft-
Southern Sangre de Cristo Mountains Between 7500 and 11000 Ft-
Southern Sangre de Cristo Mountains Above 11000 Ft-
Northwestern Fremont County  Above 8500Ft-
Western/Central Fremont County Below 8500 Ft-
Wet Mountain Valley Below 8500 Ft-
Wet Mountains between 6300 and 10000Ft-
Wet Mountains above 10000 Ft-
Teller County/Rampart Range above 7500fT/Pike's Peak Between
7500 And 11000 Ft-Pikes Peak above 11000 Ft-
Canon City Vicinity/Eastern Fremont County-
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Ft-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range
Below 7400 Ft-Pueblo Vicinity/Pueblo County Below 6300 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Ft-
Trinidad Vicinity/Western Las Animas County Below 7500 Ft-
Crowley County-La Junta Vicinity/Otero County-
Eastern Las Animas County-Western Kiowa County-
Eastern Kiowa County-Las Animas Vicinity/Bent County-
Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County-
1149 AM MDT Sun Jul 2 2017

This hazardous weather outlook is for portions of central...east
central...south central and southeast Colorado.

.DAY ONE...This Afternoon and Tonight

A few severe storms will be possible along the Kansas border late
this afternoon and evening. The primary risks from these storms will
be 1 inch diameter hail, 60 mph winds, heavy rain and lightning.
Elsewhere, isolated to scattered storms are expected through the
evening hours, with the primary risks being 50 mph winds and
lightning, but some of the stronger storms may also produce hail
up to the size of nickels.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Isolated to scattered thunderstorms will be possible across the
area each day through Saturday. Most storms will be in the
afternoon and evening hours, with the main threats being lightning
and wind gusts up to 50 mph. Small hail and locally heavy
rainfall may also accompany the strongest storms.

.SPOTTER INFORMATION STATEMENT...

Weather conditions that meet reporting criteria for spotters will be
possible this afternoon and evening.

28/28

In the hours before

Special weather statement, Jul 2, 3:29 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 6:04 PM MDTSpecial Weather StatementPUBHuerfano41 min
Jul 1, 7:26 PM MDTSpecial Weather StatementPUBEl Paso49 min
Jul 1, 7:40 PM MDTSevere Thunderstorm WarningPUBEl Paso50 min
Jul 1, 7:49 PM MDTAreal Flood AdvisoryPUBEl Paso3 hr

Nearby

Special Weather Statements in Colorado, 2017Every special weather statement 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.