Alert archive / Colorado / Special Weather Statements in 2023
Special Weather Statement, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this special weather statement at Aug 2, 2023, 4:11 PM MDT for Phillips County, Sedgwick County, Colorado. It was in force for 49 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 2, 2023, 4:11 PM MDT (22:11 UTC)
- Expired
- Aug 2, 2023, 5:00 PM MDT
- In force
- 49 min
- Issued by
- NWS Denver/Boulder, CO
- Hail
- 0.88 in
- Wind
- 50
Counties Phillips County, CO, Sedgwick County, CO
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.2 hours before the alert went out and 167 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.
- Mixed-layer CAPE
- 5 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1628 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 Denver/Boulder, CO wrote its last area forecast discussion before this special weather statement went out at Aug 2, 3:22 PM MDT, 49 minutes earlier.
Area forecast discussion, Aug 2, 3:22 PM MDT, 49 minutes before
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</html>Hazardous weather outlook, Aug 2, 11:16 AM MDT, 4 hours 55 minutes before
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</html>In the hours before
Special weather statement, Aug 2, 2:01 PM MDT, 2 hours 10 minutes before
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</html>Special weather statement, Aug 2, 2:31 PM MDT, 1 hour 40 minutes before
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</html>Special weather statement, Aug 2, 3:18 PM MDT, 53 minutes before
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</html>Special weather statement, Aug 2, 4:11 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Denver CO
411 PM MDT Wed Aug 2 2023
COZ050-051-022300-
Phillips County CO-Sedgwick County CO-
411 PM MDT Wed Aug 2 2023
...A strong thunderstorm will impact portions of Phillips and
Sedgwick Counties through 500 PM MDT...
At 411 PM MDT, Doppler radar was tracking a strong thunderstorm near
Fairfield, or 11 miles northwest of Holyoke, moving east at 25 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Holyoke, Haxtun, Sedgwick, Paoli, Amherst, Highland Center,
Fairfield, Marks Butte and Sixteen-Mile Corner.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4044 10266 4075 10265 4098 10265 4093 10212
4045 10216
TIME...MOT...LOC 2211Z 249DEG 21KT 4067 10250
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
ENTREKINThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 6:10 PM MDT | Areal Flood Advisory | BOU | Boulder | 3 hr |
| Aug 1, 6:11 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 34 min |
| Aug 1, 6:21 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 24 min |
| Aug 1, 6:43 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 32 min |
| Aug 1, 6:49 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 41 min |
| Aug 1, 6:57 PM MDT | Flash Flood Warning | BOU | Morgan | 3 hr |
| Aug 1, 8:25 PM MDT | Special Weather Statement | BOU | Washington | 50 min |
| Aug 1, 9:16 PM MDT | Areal Flood Advisory | BOU | Larimer | 119 min |
| Aug 2, 2:01 PM MDT | Special Weather Statement | BOU | Morgan | 44 min |
| Aug 2, 2:22 PM MDT | Areal Flood Advisory | BOU | Weld | 3 hr |
| Aug 2, 2:31 PM MDT | Special Weather Statement | BOU | Logan | 44 min |
| Aug 2, 2:36 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Sedgwick | 24 min |
| Aug 2, 3:10 PM MDT | Areal Flood Advisory | BOU | Larimer | 3 hr |
| Aug 2, 3:18 PM MDT | Special Weather Statement | BOU | Logan | 42 min |
| Aug 2, 3:24 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 51 min |
| Aug 2, 3:34 PM MDT | Areal Flood Advisory | BOU | Logan, Sedgwick | 3 hr |
| Aug 2, 5:13 PM MDT | Areal Flood Advisory | BOU | Phillips, Sedgwick | 3 hr |
Nearby
Special Weather Statements in Colorado, 2023Every special weather statement in 2023
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.