Alert archive / Kansas / Flash Flood Watches in 2019

Flash Flood Watch 2, NWS Goodland, KS

July 20, 20194 counties in Kansas; Cheyenne County, Kit Carson County, Yuma County, Colorado; Dundy County, Nebraska

NWS Goodland, KS issued this flash flood watch at Jul 20, 2019, 8:55 PM CDT for 4 counties in Kansas; Cheyenne County, Kit Carson County, Yuma County, Colorado; Dundy County, Nebraska. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Jul 20, 2019, 8:55 PM CDT (01:55 UTC)
Expired
Jul 21, 2019, 1:27 AM CDT
In force
5 hr
Issued by
NWS Goodland, KS
Flood severity
None

Counties Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Sherman County, KS, Wallace County, KS, Dundy County, NE

The radar

The Goodland radar (KGLD), 29 km from the middle of the area, began a volume at 01:55 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, 1.9 hours before the alert went out and 117 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 2019-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 393 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 2019-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
393 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1953 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Goodland, KS wrote its last area forecast discussion before this flash flood watch went out at Jul 20, 7:15 PM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, Jul 20, 7:15 PM CDT, 1 hour 40 minutes before
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Hazardous weather outlook, Jul 20, 6:59 PM CDT, 1 hour 56 minutes before
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In the hours before

Local storm report, Jul 20, 4:16 PM CDT, 4 hours 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
316 PM MDT SAT JUL 20 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0253 PM     EXCESSIVE HEAT   1 E HILL CITY           39.37N 99.83W
07/20/2019  M108 F           GRAHAM             KS   ASOS

            ASOS STATION KHLC HILL CITY.

&&
Special weather statement, Jul 20, 8:14 PM CDT, 41 minutes before
Special Weather Statement
National Weather Service Goodland KS
714 PM MDT Sat Jul 20 2019

KSZ041-210130-
Greeley KS-
714 PM MDT Sat Jul 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GREELEY COUNTY UNTIL
730 PM MDT...

At 713 PM MDT, Doppler radar was tracking a strong thunderstorm 6
miles southwest of Horace, or 8 miles west of Tribune, moving
northwest at 5 mph.

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

Locations impacted include...
Tribune and Horace.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3830 10168 3831 10197 3852 10202 3857 10172
TIME...MOT...LOC 0113Z 123DEG 6KT 3843 10190

024
Special weather statement, Jul 20, 8:30 PM CDT, 25 minutes before
Special Weather Statement
National Weather Service Goodland KS
730 PM MDT Sat Jul 20 2019

KSZ041-210145-
Greeley KS-
730 PM MDT Sat Jul 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GREELEY COUNTY UNTIL 745
PM MDT...

At 730 PM MDT, Doppler radar was tracking a strong thunderstorm over
Tribune, moving north at 15 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Tribune and Horace.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3829 10158 3829 10197 3857 10199 3857 10157
TIME...MOT...LOC 0130Z 184DEG 12KT 3847 10176

024
Special weather statement, Jul 20, 8:46 PM CDT, 9 minutes before
Special Weather Statement
National Weather Service Goodland KS
746 PM MDT Sat Jul 20 2019

KSZ041-210215-
Greeley KS-
746 PM MDT Sat Jul 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GREELEY COUNTY UNTIL 815
PM MDT...

At 745 PM MDT, Doppler radar was tracking a strong thunderstorm over
Horace, or near Tribune, moving north at 20 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Tribune and Horace.

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.

&&

A Severe Thunderstorm Watch remains in effect until 200 AM MDT for
west central Kansas.

LAT...LON 3837 10158 3836 10192 3858 10191 3859 10158
TIME...MOT...LOC 0145Z 190DEG 15KT 3850 10178

024

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 20, 8:14 PM CDTSpecial Weather StatementGLDGreeley16 min
Jul 20, 8:30 PM CDTSpecial Weather StatementGLDGreeley15 min
Jul 20, 8:46 PM CDTSpecial Weather StatementGLDGreeley29 min
Jul 20, 9:01 PM CDTSevere Thunderstorm WarningGLDGreeley44 min
Jul 20, 9:11 PM CDTSpecial Weather StatementGLDWichita34 min
Jul 20, 9:46 PM CDTSpecial Weather StatementGLDGreeley, Wichita29 min
Jul 20, 10:47 PM CDTSpecial Weather StatementGLDWallace28 min
Jul 20, 11:07 PM CDTAreal Flood WarningGLDGreeley, Wichita2 hr
Jul 20, 11:16 PM CDTSpecial Weather StatementGLDSherman29 min
Jul 20, 11:42 PM CDTSpecial Weather StatementGLDSherman33 min
Jul 21, 12:17 AM CDTSpecial Weather StatementGLDCheyenne, Sherman13 min
Jul 21, 12:30 AM CDTSpecial Weather StatementGLDCheyenne15 min
Jul 20, 10:22 PM CDTSpecial Weather StatementGLDCheyenne38 min
Jul 20, 10:29 PM CDTSpecial Weather StatementGLDKit Carson16 min
Jul 20, 10:49 PM CDTSpecial Weather StatementGLDKit Carson26 min
Jul 20, 11:08 PM CDTSpecial Weather StatementGLDKit Carson22 min
Jul 21, 12:44 AM CDTSpecial Weather StatementGLDYuma16 min
Jul 21, 12:58 AM CDTSpecial Weather StatementGLDYuma32 min

Nearby

Flash Flood Watches in Kansas, 2019Flash Flood Watches in Colorado, 2019Flash Flood Watches in Nebraska, 2019Every flash flood watch in 2019

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.