Alert archive / Colorado / Special Weather Statements in 2018

Special Weather Statement, NWS Pueblo, CO

August 9, 2018

NWS Pueblo, CO issued this special weather statement at Aug 9, 2018, 6:52 PM MDT. It was in force for 38 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 9, 2018, 6:52 PM MDT (00:52 UTC)
Expired
Aug 9, 2018, 7:30 PM MDT
In force
38 min
Issued by
NWS Pueblo, CO

The radar

The Pueblo radar (KPUX), 156 km from the middle of the area, began a volume at 00:54 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

Albuquerq/Krtlnd, NM (KABQ), launched 00:00Z, 0.9 hours before the alert went out and 288 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, Albuquerq/Krtlnd, NM at 00:00Z on 2018-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 768 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, Albuquerq/Krtlnd, NM at 00:00Z on 2018-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
768 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
2615 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

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 Aug 9, 3:04 PM MDT, 3 hours 48 minutes earlier.

Area forecast discussion, Aug 9, 3:04 PM MDT, 3 hours 48 minutes before
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Hazardous weather outlook, Aug 9, 11:41 AM MDT, 7 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service Pueblo CO
1141 AM MDT Thu Aug 9 2018

COZ058>089-093>099-101745-
Western Mosquito Range/East Lake County Above 11000 Feet-
Leadville Vicinity/Lake County Below 11000 Feet-
Eastern Sawatch Mountains Above 11000 Feet-
Western Chaffee County Between 9000 and 11000 Feet-
Central Chaffee County Below 9000 Feet-
Western Mosquito Range/East Chaffee County Above 9000 Feet-
Saguache County West of Continental Divide Below 10000 Feet-
Saguache County East of Continental Divide Below 10000 Feet-
La Garita Mountains Above 10000 Feet-
Upper Rio Grande Valley/Eastern San Juan Mountains Below
10000 Feet-Eastern San Juan Mountains Above 10000 Feet-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Feet-
Southern San Luis Valley-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-
Northern Sangre de Cristo Mountains Above 11000 Feet-
Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-
Southern Sangre de Cristo Mountains Above 11000 Feet-
Northwestern Fremont County Above 8500 Feet-
Western/Central Fremont County Below 8500 Feet-
Wet Mountain Valley Below 8500 Feet-
Wet Mountains between 6300 and 10000 Feet-
Wet Mountains Above 10000 Feet-
Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between
7500 And 11000 Feet-Pikes Peak Above 11000 Feet-
Canon City Vicinity/Eastern Fremont County-
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Feet-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range
Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet-
Trinidad Vicinity/Western Las Animas County Below 7500 Feet-
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-
1141 AM MDT Thu Aug 9 2018

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

.DAY ONE...This Afternoon and Tonight

Scattered thunderstorms will stay confined to the mountains and
interior valleys this afternoon and evening with the main threats
being locally heavy rainfall, lightning, erratic wind gusts up to
45 mph and small hail. Although thunderstorms are expected to
remain more localized today, flash flooding will still be possible
should a stronger storm impact some of the newer burn scars such
as Hayden Pass, Junkins or Spring.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are expected to become more limited in coverage and
favor higher terrain locations from Friday into Monday as a
drying trend develops during this time-frame. Then, an increased
threat of thunderstorms is still expected from Tuesday into
Wednesday as monsoonal flow returns to southern Colorado. Primary
thunderstorm threats from Friday into Wednesday are expected to
be hazardous lightning, wind gusts around 40 mph and periods of
moderate to heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

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

10/77

In the hours before

Special weather statement, Aug 9, 1:05 PM MDT, 5 hours 47 minutes before
Special Weather Statement
National Weather Service Pueblo CO
105 PM MDT THU AUG 9 2018

COZ067-068-091945-
Eastern San Juan Mountains Above 10000 Ft CO-
Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Ft CO-
105 PM MDT THU AUG 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL RIO GRANDE AND
NORTHWESTERN CONEJOS COUNTIES UNTIL 145 PM MDT...

At 104 PM MDT, Doppler radar was tracking a strong thunderstorm 16
miles southeast of Wolf Creek Pass, or 31 miles north of Chama,
moving south at 10 mph.

Brief heavy rain, winds in excess of 40 mph and small hail up to the
size of dimes will be possible with this storm.

Locations impacted include...
Platoro.

LAT...LON 3713 10658 3714 10659 3719 10660 3723 10668
      3732 10668 3744 10662 3740 10640 3710 10643
TIME...MOT...LOC 1904Z 012DEG 10KT 3736 10654

mw
Special weather statement, Aug 9, 1:34 PM MDT, 5 hours 18 minutes before
Special Weather Statement
National Weather Service Pueblo CO
134 PM MDT THU AUG 9 2018

COZ074-075-088-092015-
Southern Sangre De Cristo Mountains Between 7500 and 11000 Ft CO-
Trinidad Vicinity/Western Las Animas County Below 7500 Ft CO-
Southern Sangre De Cristo Mountains Above 11000 Ft CO-
134 PM MDT THU AUG 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN HUERFANO...SOUTHEASTERN
COSTILLA AND SOUTHWESTERN LAS ANIMAS COUNTIES UNTIL 215 PM MDT...

At 133 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Cuchara Pass, or 25 miles west of Trinidad, moving
south at 20 mph.

Brief heavy rain, dime size hail and winds in excess of 40 mph will
be possible with this storm.

Locations impacted include...
Stonewall and Weston.

LAT...LON 3700 10518 3734 10503 3731 10482 3700 10484
      3699 10507
TIME...MOT...LOC 1933Z 011DEG 17KT 3726 10494

mw
Special weather statement, Aug 9, 1:54 PM MDT, 4 hours 58 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 6:01 PM MDTAreal Flood AdvisoryPUBChaffee3 hr
Aug 9, 6:45 PM MDTSpecial Weather StatementPUBRio Grande60 min
Aug 9, 7:50 PM MDTSpecial Weather StatementPUBAlamosa40 min
Aug 10, 4:31 PM MDTSpecial Weather StatementPUBLas Animas29 min

Nearby

Special Weather Statements in Colorado, 2018Every special weather statement in 2018

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.