Alert archive / Nebraska / Areal Flood Advisories in 2021
Areal Flood Advisory 33, NWS North Platte, NE
NWS North Platte, NE issued this areal flood advisory at Sep 29, 2021, 11:11 PM CDT for 7 counties in Nebraska. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Sep 29, 2021, 11:11 PM CDT (04:11 UTC)
- Expired
- Sep 30, 2021, 2:16 AM CDT
- In force
- 3 hr
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
Counties Blaine County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Logan County, NE, Rock County, NE, Thomas County, NE
The radar
The North Platte radar (KLNX), 34 km from the middle of the area, began a volume at 04:14 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.2 hours before the alert went out and 106 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
- 803 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1535 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS North Platte, NE wrote its last area forecast discussion before this areal flood advisory went out at Sep 29, 8:01 PM CDT, 3 hours 10 minutes earlier.
Area forecast discussion, Sep 29, 8:01 PM CDT, 3 hours 10 minutes before
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</html>Hazardous weather outlook, Sep 29, 3:54 PM CDT, 7 hours 17 minutes before
Hazardous Weather Outlook National Weather Service North Platte NE 354 PM CDT Wed Sep 29 2021 NEZ004>010-022>029-035>038-056>059-069>071-094-302100- Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden- Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson- Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier- Western Cherry- 354 PM CDT Wed Sep 29 2021 /254 PM MDT Wed Sep 29 2021/ This Hazardous Weather Outlook is for portions of western and north central Nebraska. .DAY ONE...TONIGHT. Rain showers and thunderstorms will overspread much of western and north central Nebraska through tonight. While severe weather is not anticipated, stronger storms may be capable of gusty winds and small hail. Periods of heavy rain may also lead to localized flooding, primarily along and east of Highway 83. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. && Get your weather, hydrological, and climate information at http://www.weather.gov/northplatte
In the hours before
Local storm report, Sep 29, 7:27 PM CDT, 3 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
727 PM CDT WED SEP 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0723 PM HEAVY RAIN NW SUTHERLAND 41.16N 101.13W
09/29/2021 M3.00 INCH LINCOLN NE PUBLIC
REPORT VIA SOCIAL MEDIA OF STORM TOTAL THIS EVENING OF 3
INCHES.
&&
JACLYN.GOMEZSpecial weather statement, Sep 29, 7:31 PM CDT, 3 hours 40 minutes before
Special Weather Statement
National Weather Service North Platte NE
731 PM CDT Wed Sep 29 2021
NEZ037-038-059-300115-
Custer NE-Lincoln NE-Logan NE-
731 PM CDT Wed Sep 29 2021
...Strong thunderstorms will impact portions of eastern Lincoln,
southeastern Logan and western Custer Counties through 815 PM CDT...
At 731 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles northeast of Gandy to 9 miles north of
Brady to 10 miles north of Moorefield. Movement was east at 20 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Arnold, Callaway, Brady, Logan, Pleasant Hill, Etna, Hoagland,
Milldale, Jeffrey Canyon State Wildlife Management Area, Finchville,
Vroman and Lodi.
This includes the following highways...
Highway 2 between mile markers 260 and 262.
Highway 92 between mile markers 239 and 270.
Interstate 80 in Nebraska between mile markers 196 and 207.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4077 10047 4116 10041 4159 10037 4161 9981
4105 9987 4104 10023 4071 10023
TIME...MOT...LOC 0031Z 277DEG 18KT 4152 10030 4116 10034 4083 10038
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
TaylorSpecial weather statement, Sep 29, 7:35 PM CDT, 3 hours 36 minutes before
Special Weather Statement
National Weather Service North Platte NE
735 PM CDT Wed Sep 29 2021
NEZ037-038-059-300115-
Custer NE-Lincoln NE-Logan NE-
735 PM CDT Wed Sep 29 2021
...Strong thunderstorms will impact portions of northeastern Lincoln,
eastern Logan and western Custer Counties through 815 PM CDT...
At 735 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles northeast of Gandy to near Brady.
Movement was east at 30 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Arnold, Callaway, Brady, Logan, Etna, Milldale, Jeffrey Canyon State
Wildlife Management Area, Shanklin Bluff, Tarboz Lake, Pleasant Hill,
Hoagland, Brown Lake, Finchville and Vroman.
This includes the following highways...
Highway 2 between mile markers 250 and 256.
Highway 92 between mile markers 236 and 266.
Interstate 80 in Nebraska between mile markers 195 and 208.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4166 10044 4172 9989 4105 9991 4105 10022
4089 10023 4088 10046
TIME...MOT...LOC 0035Z 259DEG 25KT 4161 10037 4097 10039
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
TaylorSpecial weather statement, Sep 29, 8:34 PM CDT, 2 hours 37 minutes before
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</html>Local storm report, Sep 29, 9:08 PM CDT, 2 hours 3 minutes before
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</html>The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 7:05 PM CDT | Special Weather Statement | LBF | Lincoln | 40 min |
| Sep 29, 7:31 PM CDT | Special Weather Statement | LBF | Dawson | 44 min |
| Sep 29, 7:35 PM CDT | Special Weather Statement | LBF | Logan | 40 min |
| Sep 29, 7:54 PM CDT | Areal Flood Advisory | LBF | Keith, Lincoln | 5 hr |
| Sep 29, 8:34 PM CDT | Special Weather Statement | LBF | Frontier | 41 min |
| Sep 29, 8:40 PM CDT | Areal Flood Advisory | LBF | Blaine, Brown, Cherry, Logan, Thomas | 3 hr |
| Sep 29, 9:19 PM CDT | Special Weather Statement | LBF | Custer, Loup | 41 min |
Nearby
Areal Flood Advisories in Nebraska, 2021Every areal flood advisory in 2021
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.