Alert archive / Nebraska / Areal Flood Advisories in 2021
Areal Flood Advisory 5, NWS North Platte, NE
NWS North Platte, NE issued this areal flood advisory at May 17, 2021, 1:31 AM MDT for Chase County, Nebraska. It was in force for 31 min.
The area
The counties it named.
The facts
- Issued
- May 17, 2021, 1:31 AM MDT (07:31 UTC)
- Expired
- May 17, 2021, 2:02 AM MDT
- In force
- 31 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
County Chase County, NE
The radar
The Goodland radar (KGLD), 129 km from the middle of the area, began a volume at 07:35 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, 7.5 hours before the alert went out and 114 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
- 751 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 872 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.1
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 May 16, 10:48 PM MDT, 2 hours 43 minutes earlier.
Area forecast discussion, May 16, 10:48 PM MDT, 2 hours 43 minutes before
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</html>Hazardous weather outlook, May 16, 1:34 PM MDT, 11 hours 57 minutes before
Hazardous Weather Outlook National Weather Service North Platte NE 234 PM CDT Sun May 16 2021 NEZ004>010-022>029-035>038-056>059-069>071-094-171945- 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- 234 PM CDT Sun May 16 2021 /134 PM MDT Sun May 16 2021/ This Hazardous Weather Outlook is for portions of western and north central Nebraska. .DAY ONE...TONIGHT. Showers and thunderstorms are be possible this evening, with some storms having potential to be strong to severe. The greatest threat is expected for southwest Nebraska. The main impacts will be large hail, gusty winds, and localized heavy rainfall. Localized flooding is possible across portions of north central and southwest Nebraska. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. The week will continue to see the potential for thunderstorms each evening. The severe threat is being monitored for each day. Yet, tomorrow the severe threat looks to be low. .SPOTTER INFORMATION STATEMENT... Please relay any information about observed severe weather to the NWS. && Get your weather, hydrological, and climate information at http://www.weather.gov/northplatte
In the hours before
Special weather statement, May 16, 8:25 PM MDT, 5 hours 6 minutes before
Special Weather Statement National Weather Service North Platte NE 925 PM CDT Sun May 16 2021 NEZ070-071-170330- Frontier NE-Hayes NE- 925 PM CDT Sun May 16 2021 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN FRONTIER AND EAST CENTRAL HAYES COUNTIES UNTIL 1030 PM CDT... At 925 PM CDT, Doppler radar was tracking a strong thunderstorm near Curtis, moving south at 15 mph. Nickel size hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Curtis, Maywood and Quick. This includes Highway 83 between mile markers 30 and 48. 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. && LAT...LON 4066 10067 4064 10050 4036 10048 4043 10087 TIME...MOT...LOC 0225Z 019DEG 14KT 4060 10060 Kulik
Local storm report, May 16, 9:01 PM MDT, 4 hours 30 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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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 |
|---|---|---|---|---|
| May 16, 8:25 PM MDT | Special Weather Statement | LBF | Frontier | 65 min |
| May 16, 8:33 PM MDT | Severe Thunderstorm Warning | LBF | Frontier, Hayes | 18 min |
| May 17, 2:02 AM MDT | Flash Flood Warning | LBF | Chase | 3 hr |
| May 17, 8:37 AM MDT | Areal Flood Warning | LBF | Keith, Lincoln, McPherson | 3 hr |
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.