Alert archive / Colorado / Special Weather Statements in 2020

Special Weather Statement, NWS Pueblo, CO

July 31, 2020Otero County, Colorado

NWS Pueblo, CO issued this special weather statement at Jul 31, 2020, 8:45 PM MDT for Otero County, Colorado. It was in force for 30 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 31, 2020, 8:45 PM MDT (02:45 UTC)
Expired
Jul 31, 2020, 9:15 PM MDT
In force
30 min
Issued by
NWS Pueblo, CO

County Otero County, CO

The radar

The Pueblo radar (KPUX), 83 km from the middle of the area, began a volume at 02:45 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 (KDNR), launched 00:00Z, 2.8 hours before the alert went out and 234 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 00:00Z on 2020-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 284 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 00:00Z on 2020-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.19395878Sfc1 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
284 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
2927 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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 31, 8:08 PM MDT, 37 minutes earlier.

Area forecast discussion, Jul 31, 8:08 PM MDT, 37 minutes before
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Hazardous weather outlook, Jul 31, 11:14 AM MDT, 9 hours 31 minutes before
Hazardous Weather Outlook
National Weather Service Pueblo CO
1114 AM MDT Fri Jul 31 2020

COZ058>089-093>099-011300-
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-
1114 AM MDT Fri Jul 31 2020

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

.DAY ONE...This Afternoon and Tonight

Isolated to scattered thunderstorms are expected this afternoon and
evening in and near the mountains.  The main risk with thunderstorms
will be gusty winds up to 40 mph, brief heavy rainfall, and
dangerous cloud to ground lightning.  One or two storms in and near
the mountains could briefly become strong, producing hail up to the
size of nickels and wind gusts up to 50 mph.  Localized flash
flooding will be possible on area burn scars should these locations
be impacted by a stronger storm.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Scattered thunderstorms are expected over the mountains, the
mountain valleys, and the adjacent plains on Saturday afternoon.
Flash flooding will be possible over the burn scars if a stronger
storm develops over them. Widespread showers and thunderstorms are
expected on Sunday and Monday afternoon, with the higher risk of
burn scar flash flooding on Sunday afternoon. There is a chance for
severe weather on Sunday and Monday afternoon, with the main risks
being 1 inch hail and 60 mph winds.

Isolated to scattered thunderstorms are expected over the mountains
from Tuesday through Thursday. Though storms will be isolated to
scattered,flash flooding is still possible if a storm develops over
the burn scars.

.SPOTTER INFORMATION STATEMENT...

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

10/27

In the hours before

Special weather statement, Jul 31, 4:58 PM MDT, 3 hours 47 minutes before
Special Weather Statement
National Weather Service Pueblo CO
458 PM MDT Fri Jul 31 2020

COZ072-073-076>078-312330-
Western/Central Fremont County Below 8500 Ft CO-
Wet Mountain Valley Below 8500 Ft CO-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Ft CO-
Northern Sangre de Cristo Mountains above 11000 Ft CO-
Northwestern Fremont County  Above 8500Ft CO-
458 PM MDT Fri Jul 31 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FREMONT...
NORTHWESTERN CUSTER AND EAST CENTRAL SAGUACHE COUNTIES UNTIL 530 PM
MDT...

At 458 PM MDT, Doppler radar was tracking a strong thunderstorm over
Coaldale, or near Hayden Pass Burn Scar, moving southeast at 30 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Hayden Pass Burn Scar, Coaldale, Cotopaxi and Hillside.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3841 10589 3850 10567 3818 10540 3806 10570
TIME...MOT...LOC 2258Z 333DEG 25KT 3839 10573

29
Special weather statement, Jul 31, 6:04 PM MDT, 2 hours 41 minutes before
Special Weather Statement
National Weather Service Pueblo CO
604 PM MDT Fri Jul 31 2020

COZ078>080-010030-
Wet Mountains between 6300 and 10000Ft CO-
Wet Mountain Valley Below 8500 Ft CO-Wet Mountains above 10000 Ft CO-
604 PM MDT Fri Jul 31 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HUERFANO...EASTERN
CUSTER AND WEST CENTRAL PUEBLO COUNTIES UNTIL 630 PM MDT...

At 603 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Junkins Burn Scar, moving southeast at 25 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Southwestern Junkins Burn Scar, Silver Cliff and Rosita.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3814 10540 3820 10528 3801 10498 3786 10527
TIME...MOT...LOC 0003Z 321DEG 23KT 3811 10529

29
Special weather statement, Jul 31, 6:33 PM MDT, 2 hours 12 minutes before
Special Weather Statement
National Weather Service Pueblo CO
633 PM MDT Fri Jul 31 2020

COZ083-086-010100-
Pueblo Vicinity/Pueblo County Below 6300 Feet CO-
Canon City Vicinity/Eastern Fremont County CO-
633 PM MDT Fri Jul 31 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FREMONT AND
NORTHWESTERN PUEBLO COUNTIES UNTIL 700 PM MDT...

At 633 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Penrose, or 17 miles west of Pueblo, moving
southeast at 25 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Northwestern Pueblo, Pueblo West, Pueblo Reservoir and Penrose.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3834 10506 3848 10490 3831 10457 3810 10485
TIME...MOT...LOC 0033Z 317DEG 21KT 3835 10491

29
Special weather statement, Jul 31, 7:09 PM MDT, 1 hour 36 minutes before
Special Weather Statement
National Weather Service Pueblo CO
709 PM MDT Fri Jul 31 2020

COZ079-086-010145-
Pueblo Vicinity/Pueblo County Below 6300 Feet CO-
Wet Mountains between 6300 and 10000Ft CO-
709 PM MDT Fri Jul 31 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PUEBLO COUNTY UNTIL
745 PM MDT...

At 707 PM MDT, Doppler radar was tracking 2 strong thunderstorms;
one near Pueblo West, and one 1 mile south of the Pueblo Reservoir,
moving south at 35 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Pueblo, Pueblo West, Pueblo Reservoir, Salt Creek, Blende and
Colorado City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3847 10487 3848 10464 3797 10439 3795 10499
TIME...MOT...LOC 0107Z 001DEG 32KT 3840 10476

29
Local storm report, Jul 31, 7:41 PM MDT, 1 hour 4 minutes before
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Special weather statement, Jul 31, 8:45 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 31, 6:04 PM MDTSpecial Weather StatementPUBCuster26 min
Jul 31, 6:33 PM MDTSpecial Weather StatementPUBPueblo27 min
Jul 31, 7:09 PM MDTSpecial Weather StatementPUBPueblo36 min
Jul 31, 7:12 PM MDTSevere Thunderstorm WarningPUBPueblo33 min
Jul 31, 7:37 PM MDTSevere Thunderstorm WarningPUBOtero, Pueblo23 min
Jul 31, 9:15 PM MDTSpecial Weather StatementPUBBent30 min
Aug 1, 3:18 PM MDTSpecial Weather StatementPUBSaguache42 min
Aug 1, 4:02 PM MDTFlash Flood WarningPUBCostilla, Huerfano2 hr
Aug 1, 4:15 PM MDTSpecial Weather StatementPUBConejos30 min
Aug 1, 4:43 PM MDTFlash Flood Warning Considerable damage threatPUBHuerfano2 hr
Aug 1, 5:00 PM MDTSpecial Weather StatementPUBCostilla45 min

Nearby

Special Weather Statements in Colorado, 2020Every special weather statement in 2020

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.