Alert archive / Colorado / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 286, NWS Denver/Boulder, CO

July 13, 2023Washington County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 13, 2023, 12:43 PM MDT for Washington County, Colorado. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 13, 2023, 12:43 PM MDT (18:43 UTC)
Expired
Jul 13, 2023, 1:05 PM MDT
In force
22 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Washington County, CO

The radar

The Denver radar (KFTG), 117 km from the middle of the area, began a volume at 18:46 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
Jul 13, 12:29 PM MDTSevere Thunderstorm WatchSPC10 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 13, 12:36 PM MDT, 7 minutes earlier.

Area forecast discussion, Jul 13, 12:36 PM MDT, 7 minutes before
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Hazardous weather outlook, Jul 13, 11:11 AM MDT, 1 hour 32 minutes before
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1111 AM MDT Thu Jul 13 2023

COZ030>051-141715-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1111 AM MDT Thu Jul 13 2023

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...This Afternoon and Tonight

Isolated showers and thunderstorms to develop this afternoon and
evening over the mountains and plains. A few strong to severe
storms are possible over the far eastern plains of Colorado with
large hail, damaging winds and even a possible tornado. The
stronger storms will develop along and east of boundary that will
extended from around Sterling to Limon to Pumpkin Center.

Further west towards the urban corridor and mountains, the
showers and storms will be weaker with only brief rain and gusty
winds expected. Expect elevated fire danger over the mountains and
high valleys this afternoon with lowering humidity levels and
gusty winds.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Isolated to scattered storms are forecast across the I-25
corridor and plains Friday and Saturday, with a warming and drying
trend Sunday into early next week. Potential for elevated fire
weather conditions in the high country Monday and Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed over far Eastern Colorado after 2
pm today.

In the hours before

Local storm report, Jul 13, 12:35 PM MDT, 8 minutes before
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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 13, 12:09 PM MDTSevere Thunderstorm WarningBOUWashington36 min
Jul 13, 12:27 PM MDTSevere Thunderstorm WarningBOULincoln48 min
Jul 13, 1:00 PM MDTAreal Flood AdvisoryBOUWashington3 hr
Jul 13, 1:04 PM MDTSevere Thunderstorm WarningBOULincoln41 min
Jul 13, 1:36 PM MDTSevere Thunderstorm WarningBOULincoln39 min
Jul 13, 2:05 PM MDTTornado Warning Tornado observedBOULincoln25 min
Jul 13, 2:30 PM MDTSevere Thunderstorm Warning Considerable damage threatBOULincoln45 min
Jul 13, 2:33 PM MDTSevere Thunderstorm WarningBOULincoln42 min
Jul 13, 3:01 PM MDTSevere Thunderstorm Warning Destructive damage threatBOULincoln44 min
Jul 13, 3:50 PM MDTSevere Thunderstorm WarningBOUWeld40 min
Jul 13, 4:31 PM MDTSevere Thunderstorm WarningBOUWeld29 min
Jul 13, 4:44 PM MDTSevere Thunderstorm WarningBOULogan46 min
Jul 13, 4:51 PM MDTSevere Thunderstorm Warning Destructive damage threatBOULogan, Morgan, Weld39 min
Jul 13, 5:29 PM MDTSevere Thunderstorm Warning Considerable damage threatBOUMorgan, Weld29 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2023Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.