Alert archive / Nebraska / River Flood Warnings in 2020

River Flood Warning 3, NWS Goodland, KS

July 24, 2020Hitchcock County, Nebraska

NWS Goodland, KS issued this river flood warning at Jul 24, 2020, 2:54 PM CDT for Hitchcock County, Nebraska. It took effect at Jul 24, 2020, 9:53 PM CDT. It was in force for 37 hr.

The area

The counties it named.

The facts

Issued
Jul 24, 2020, 2:54 PM CDT (19:54 UTC)
In effect from
Jul 24, 2020, 9:53 PM CDT
Expired
Jul 26, 2020, 11:15 AM CDT
In force
37 hr
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Flood severity
Major

County Hitchcock County, NE

The radar

The Goodland radar (KGLD), 106 km from the middle of the area, began a volume at 19:56 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 river

Written for the forecast point Republican River at Stratton (STTN1). The gauge peaked at 10.78 ft at Jul 26, 2020, 12:00 AM CDT.

actionminormoderate51007/2407/2507/2607/27
Action stage
10 ft
Minor stage
11 ft
Moderate stage
13 ft
Major stage
15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06828500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning 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 river flood warning went out at Jul 24, 5:20 AM CDT, 9 hours 34 minutes earlier.

Area forecast discussion, Jul 24, 5:20 AM CDT, 9 hours 34 minutes before
Area Forecast Discussion
National Weather Service Goodland KS
420 AM MDT Fri Jul 24 2020

.SHORT TERM...(Today through Sunday night)
Issued at 420 AM MDT Fri Jul 24 2020

Today-tonight...the forecast area is caught in between an upper
level high pressure area over eastern Kansas and a trough of low
pressure centered north of Washington state putting us in southwest
flow aloft. A plume of monsoonal moisture in the 700-300mb layer is
expected to reach the northwest 1/3 or so of the forecast area
during the early to late afternoon hours, continuing through about
midnight before retreating to the northwest afterward as the upper
high center shifts slightly west. The combination of afternoon
heating and some increase in upper jet support will generate
scattered thunderstorms from around 2 PM MDT (3 PM CDT) through
about midnight MDT (1 AM CDT). Precipitable water values in the
areas expecting convection range from around 1.5 to almost 2 inches.
0-6km winds are expected to be around 25 to 30 mph from the
southwest which should help keep any storms moving and lowering the
flash flood threat. The exception will be across northeast and
eastern Yuma county, much of central and southern Dundy county and
northwest Cheyenne county KS where a nearly stationary MCS produced
confirmed rainfall amounts of up to 7 inches with higher amounts
very possible. If model trends suggest any appreciable rainfall in
these areas later today and tonight a Flash Flood Watch may be
needed. High temperatures are expected to reach the low to mid 90s,
exception possibly being in the areas mentioned above where
extensive rainfall fell, these areas could see highs several degrees
lower. Low temperatures are expected to range from the low 60s to
low 70s.

Saturday-Saturday night...not much change in the upper level pattern
with an upper high anchored along the Kansas/Missouri border. The
next batch of monsoonal moisture arrives across the northwest 2/3 of
the area during the mid afternoon through midnight hours with
scattered thunderstorms expected. Precipitable water values around
1.4 inches during the afternoon increase toward 1.9 inches during
the evening with 0-6km winds in the 20 to 25 mph range. Will need to
continue monitoring the threat for flash flooding, especially for
parts of Yuma, Dundy and Cheyenne (KS) counties. High temperatures
are expected to reach the mid 90s to around 100 degrees. Heat index
values are currently expected to be a few degrees either side of 105
east of a line from Trenton to Gove. A Heat Advisory may be needed.
Low temperatures are expected to range from the low 60s to mid 70s.

Sunday-Sunday night...a cold front moves south through the area
during the day with high temperatures ranging from the mid to upper
80s across far eastern Colorado to the mid 90s around Hill City.
Precipitation chances increase in the afternoon with thunderstorms
and a threat for locally heavy rainfall as precipitable water values
increase into the 1.5 to 2.0 range. For the overnight hours
disagreement on the handling of the post frontal moisture arise with
the models trending toward drier air at the mid levels and
keeping the lower levels more saturated. Not too sure about the
pretty high pops and qpf at this point but it continues the trend
of the past several days so we'll take another look a few more
times with each updated model run. Low temperatures are expected
to fall into the upper 50s to mid 60s.

.LONG TERM...(Monday through Friday)
Issued at 241 AM MDT Fri Jul 24 2020

Relief from the heat is on the way for the Tri-State area in the
extended forecast. Monday, an upper ridge will be situated over
the Rockies and on north into the Big Horns. High pressure will be
in place over the Desert Southwest, and an upper low will
centered over Western Ontario. Through the day, the low will dive
east-southeast toward the northern Great Lakes. An attendant cold
front will extend southwest into Central Kansas. This is a little
faster than previous model runs. Expected high temperatures will
be notably cooler, ranging from the mid-70s to mid-80s. Monsoon
moisture coming into the region and the placement of the front
will aide in the continuation of showers and thunderstorms through
the day.

The upper ridge will shift east, over the Tri-State area on Tuesday.
 Temperatures will rebound into the 80s across the region.  This
will begin a gradual warming trend which will continue through the
remainder of the week.  Expected high temperatures by Friday will
range from the mid-80s to low 90s.

Daily chances for showers and thunderstorms are expected as a series
of shortwaves move through the region.  Currently have low
confidence in the possibility of widespread rainfall across the
region during this time.  The one exception to this is Wednesday
when a more pronounced shortwave trough moves across the Tri-State
area.  Mid-level moisture is expected to increase as the disturbance
moves through the region.

&&

.AVIATION...(For the 12Z TAFS through 12Z Saturday morning)
Issued at 420 AM MDT Fri Jul 24 2020

For KGLD and KMCK, vfr conditions expected through the period.
South winds increase shortly after sunrise with gusts over 30kts
expected, mainly late this morning through the entire afternoon.
For tonight breezy south winds expected through about midnight
then south to southwest at speeds 11kts or less. We will monitor
KGLD for a chance of afternoon and evening thunderstorms, at this
time coverage and confidence too low to include in the forecast.

&&

.HYDROLOGY...
Issued at 420 AM MDT Fri Jul 24 2020

Our radar estimated up to 10 inches of rain fell across parts of
eastern Yuma, western and southern Dundy and north central
Cheyenne (KS) counties the past 18 hours or so. Additional
rainfall is expected the next 3 days as monsoonal moisture remains
in those areas. A Flash Flood Watch may be needed if confidence is
high enough that any appreciable rainfall is expected in those
areas.

&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
CO...NONE.
NE...NONE.
&&

SHORT TERM...99
LONG TERM...AW
AVIATION...99
HYDROLOGY...99
Hazardous weather outlook, Jul 24, 12:08 PM CDT, 2 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service Goodland KS
1108 AM MDT Fri Jul 24 2020

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-251715-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
1108 AM MDT Fri Jul 24 2020 /1208 PM CDT Fri Jul 24 2020/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

Scattered thunderstorms will develop in Northeast Colorado this
afternoon, tracking northeastward into Southwest Nebraska late this
afternoon and evening. Isolated severe storms are possible, mainly
north and west of Goodland between 3-10 pm MDT.

A Flash Flood Watch is in effect through Saturday morning for Yuma
county Colorado, Dundy and Hitchcock counties in Nebraska, and
Cheyenne and Rawlins counties in Kansas.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY...

A few severe thunderstorms are possible during the afternoon and
evening hours on both Saturday and Sunday, mainly in Eastern Colorado
and adjacent Kansas and Nebraska border counties. Locally heavy
rainfall and isolated flash flooding cannot be ruled out.

Heat index values are expected to be a few degrees either side of
105 east of a line from Trenton to Gove.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed during the afternoon and evening
hours Today, Saturday, and Sunday.

Vincent

In the hours before

Local storm report, Jul 24, 11:34 AM CDT, 3 hours 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
1034 AM MDT FRI JUL 24 2020

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

1003 AM     HEAVY RAIN       5 SW WRAY               40.03N 102.29W
07/24/2020  M4.60 INCH       YUMA               CO   PUBLIC

            24 HOUR RAINFALL MEASUREMENT. REPORTED VIA
            SOCIAL MEDIA.

&&

KMK
Local storm report, Jul 24, 12:07 PM CDT, 2 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
1107 AM MDT FRI JUL 24 2020

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

1030 AM     FLASH FLOOD      1 WSW WRAY              40.08N 102.24W
07/24/2020                   YUMA               CO   PUBLIC

            ABOUT 3 INCHES OF WATER HAS SURPASSED THE
            SAND BARRIERS PLACED IN RAINBOW PARK. WATER
            APPEARS TO BE SIGNIFICANTLY DEEPER CLOSER TO
            THE RIVER YOU GO. REPORTED VIA SOCIAL MEDIA
            WITH PICTURES.

&&

KMK
Local storm report, Jul 24, 1:39 PM CDT, 1 hour 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
1239 PM MDT FRI JUL 24 2020

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

1230 PM     HEAVY RAIN       13 N SAINT FRANCIS      39.96N 101.79W
07/24/2020  M6.65 INCH       CHEYENNE           KS   PUBLIC

            24 HOUR RAINFALL MEASUREMENT REPORTED VIA
            SOCIAL MEDIA.

&&

MRC
Local storm report, Jul 24, 1:54 PM CDT, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
1254 PM MDT FRI JUL 24 2020

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

1240 PM     EXCESSIVE HEAT   5 NW TASCO              39.41N 100.36W
07/24/2020  M105 F           SHERIDAN           KS   MESONET

            MESONET STATION 3859D 5 NW TASCO.

&&

MRC
Local storm report, Jul 24, 2:33 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
133 PM MDT FRI JUL 24 2020

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

0124 PM     HEAVY RAIN       3 W WRAY                40.08N 102.28W
07/24/2020  M6.30 INCH       YUMA               CO   PUBLIC

            24 HOUR RAINFALL MEASUREMENT REPORTED VIA
            SOCIAL MEDIA.

&&

MRC
Local storm report, Jul 24, 2:41 PM CDT, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 11:46 PM CDTFlash Flood WarningGLDCheyenne6 hr
Jul 24, 6:44 AM CDTAreal Flood WarningGLDCheyenne12 hr
Jul 24, 11:41 AM CDTFlash Flood WatchGLDCheyenne, Rawlins37 hr
Jul 24, 3:30 PM CDTSpecial Weather StatementGLDWallace45 min
Jul 23, 7:19 PM CDTSpecial Weather StatementGLDKit Carson41 min
Jul 23, 8:08 PM CDTSpecial Weather StatementGLDYuma52 min
Jul 23, 9:56 PM CDTFlash Flood WarningGLDYuma3 hr
Jul 23, 10:18 PM CDTSpecial Weather StatementGLDYuma42 min
Jul 23, 11:59 PM CDTFlash Flood WarningGLDYuma6 hr
Jul 23, 7:35 PM CDTSevere Thunderstorm WarningGLDDundy40 min
Jul 23, 8:16 PM CDTSpecial Weather StatementGLDDundy59 min
Jul 23, 8:54 PM CDTFlash Flood WarningGLDDundy3 hr
Jul 23, 9:16 PM CDTSpecial Weather StatementGLDDundy44 min
Jul 23, 11:08 PM CDTSpecial Weather StatementGLDDundy37 min
Jul 24, 9:07 AM CDTRiver Flood WarningGLDDundy, Hitchcock48 hr
Jul 24, 2:35 PM CDTRiver Flood WarningGLDDundy, Hitchcock11 hr
Jul 24, 4:48 PM CDTAreal Flood WarningGLDDundy19 hr

Nearby

River Flood Warnings in Nebraska, 2020Every river flood warning 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.