Alert archive / Nebraska / Special Weather Statements in 2018
Special Weather Statement, NWS North Platte, NE
NWS North Platte, NE issued this special weather statement at Jul 27, 2018, 4:36 PM CDT for Logan County, Thomas County, Nebraska. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 27, 2018, 4:36 PM CDT (21:36 UTC)
- Expired
- Jul 27, 2018, 5:15 PM CDT
- In force
- 39 min
- Issued by
- NWS North Platte, NE
Counties Logan County, NE, Thomas County, NE
The radar
The North Platte radar (KLNX), 30 km from the middle of the area, began a volume at 21:40 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 12:00Z, 9.6 hours before the alert went out and 68 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
- 507 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 752 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 27, 3:17 PM CDT, 1 hour 19 minutes earlier.
Area forecast discussion, Jul 27, 3:17 PM CDT, 1 hour 19 minutes before
Area Forecast Discussion National Weather Service North Platte NE 317 PM CDT Fri Jul 27 2018 .SHORT TERM...(This evening through Saturday) Issued at 228 PM CDT Fri Jul 27 2018 The near term concern is thunderstorms with severe storms possible mainly west of Ellsworth through North Platte this evening. Overcast skies with showers and a few thunderstorms have limited the instability this afternoon, and thus the potential for widespread severe storms into this evening. Models do however indicate a mid level disturbance currently extending from southwest South Dakota thorugh southeast Wyoming to increase thunderstorm coverage this evening, especially for areas south of Highway 2. In addition to an isolated hail and wind threat, heavy rainfall will be an additional concern. Areas which have received heavy rainfall the past few days will be under increased chances for localized flooding, which includes eastern Keith, west and southeast Lincoln into Frontier County. Showers and thunderstorms chances lower to a low chance pop after midnight, while chances increase in the northeast to around 50 percent. On Saturday, as the disturbance moves into eastern Nebraska, showers and storms are likely during the morning with just a slight chance southwest. In the afternoon, an approach disturbance to the northwest, will bring increased chances for showers and storms to the northwest Sandhills, while still near a 30 percent chance southeast. Stratus will likely cover much of the forecast area during the morning, while still mostly cloudy into the afternoon. This will limit highs to only the low to mid 70s most areas with a light southeast wind through the day. .LONG TERM...(Saturday night through Friday) Issued at 228 PM CDT Fri Jul 27 2018 Northwest flow aloft will continue Saturday night thorugh Sunday night. This is due to upper level high pressure remaining anchored across the desert southwest, and a slow moving upper trough draped across the Great Lakes and Midwest. Shower and thunderstorm chances to remain near 50 percent most areas Saturday night and Sunday, with the best potential for heavy rainfall expected across southwest areas Saturday night. Unsettled, rather cool conditions are forecast though Sunday night, with scattered showers and thunderstorms and highs Sunday in the mid 70s. Only general thunderstorms forecast Sunday. Early next week an upper level low will develop near and east of the mid Missouri Valley and move eastward through Wednesday. With lingering shower and thunderstorm chances Monday, the remainder of the extended look dry. Upper level ridging will expand northward across the Rockies. The upper level ridge to the west will flatten out late next week. Flow aloft will become more zonal across the central and northern plains as this occurs, with highs returning to near normal in the middle 80s to around 90. && .AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon) Issued at 1212 PM CDT Fri Jul 27 2018 Thunderstorms will be the main aviation concern this afternoon and early evening, followed by MVFR to IFR ceilings developing late tonight. Thunderstorms to increase in coverage this afternoon through early tonight with an enhanced and moderate risk for severe storms along and south of a line from Ogallala through Stockville. Hail, high wind gusts, and heavy rainfall are all possible with thunderstorms. Included a tempo at KLBF for 3sm tsrags with gusts up to 43kt from 21z-24z. Otherwise, late tonight stratus is possible and is expected to develop across much of western and north central NEB with MVFR to IFR ceilings persisting into Saturday morning. Patchy fog is possible as well, however, confidence in occurrence is too low to be included at this time. && .LBF WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...Roberg LONG TERM...Roberg AVIATION...Roberg
Hazardous weather outlook, Jul 27, 3:36 PM CDT, 1 hour before
Hazardous Weather Outlook National Weather Service North Platte NE 336 PM CDT Fri Jul 27 2018 NEZ004>010-022>029-035>038-056>059-069>071-094-282045- 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- 336 PM CDT Fri Jul 27 2018 /236 PM MDT Fri Jul 27 2018/ This Hazardous Weather Outlook is for portions of western and north central Nebraska. .DAY ONE...TONIGHT. Thunderstorms are expected to impact portions of western Nebraska tonight. Isolated to scattered severe storms are possible, including some longer lived severe storms. The greatest threat for severe storms lies along and west of a line from Hayes Center to the Crescent Lake National Wildlife Refuge. Large hail is the primary threat, with hail 2 inches or larger possible across parts of southwest Nebraska and the southeast Panhandle. Damaging winds and one or two tornadoes are also possible. Heavy rain will be also possible this evening with localized flooding possible. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. Isolated strong storms are possible Saturday and Saturday night across the Panhandle and southwest Nebraska. Hail and damaging winds are the primary threats. While isolated to scattered storms are possible Sunday as well, severe thunderstorms are not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed along and west of a line from Merriman to Callaway this afternoon and evening. && Get your weather, hydrological, and climate information at http://www.weather.gov/northplatte Roberg
In the hours before
Special weather statement, Jul 27, 3:48 PM CDT, 48 minutes before
Special Weather Statement National Weather Service North Platte NE 348 PM CDT FRI JUL 27 2018 NEZ005-025-026-272130- Eastern Cherry NE-Thomas NE-Blaine NE- 348 PM CDT FRI JUL 27 2018 ...SPECIAL WEATHER STATEMENT... At 348 PM CDT, Doppler radar was tracking a strong thunderstorm 7 miles northeast of Thedford, moving southeast at 5 mph. Half inch hail will be possible with this storm. Locations impacted include... Halsey and Natwick. This includes the following highways... Highway 2 between mile markers 213 and 231. Highway 83 between mile markers 150 and 156. 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. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. 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 4204 10066 4210 10050 4196 10005 4184 10025 TIME...MOT...LOC 2048Z 305DEG 6KT 4204 10046 JWS
Special weather statement, Jul 27, 3:53 PM CDT, 43 minutes before
Special Weather Statement National Weather Service North Platte NE 253 PM MDT FRI JUL 27 2018 NEZ069-272130- Chase NE- 253 PM MDT FRI JUL 27 2018 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHASE COUNTY UNTIL 330 PM MDT... At 251 PM MDT, Doppler radar was tracking a strong thunderstorm 16 miles south of Lamar, or 19 miles southeast of Holyoke, moving southeast at 45 mph. Nickel size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Crete. 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. && A Tornado Watch remains in effect until 900 PM MDT for southwestern Nebraska. LAT...LON 4055 10205 4041 10176 4035 10171 4035 10205 TIME...MOT...LOC 2051Z 317DEG 41KT 4035 10209 JWS
Special weather statement, Jul 27, 4:36 PM CDT, 0 minutes before
Special Weather Statement National Weather Service North Platte NE 436 PM CDT FRI JUL 27 2018 NEZ025-026-037-038-272215- Custer NE-Thomas NE-Blaine NE-Logan NE- 436 PM CDT FRI JUL 27 2018 ...SIGNIFICANT WEATHER ADVISORY FOR LOGAN...NORTHWESTERN CUSTER... SOUTHWESTERN BLAINE AND SOUTHEASTERN THOMAS COUNTIES UNTIL 515 PM CDT... At 435 PM CDT, Doppler radar was tracking a strong thunderstorm 11 miles southwest of Halsey, or 13 miles southeast of Thedford, moving southeast at 15 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Stapleton, Halsey, Gandy, Logan, Highway 83 crossing The Dismal River, Tarboz Lake, Shanklin Bluff, Pleasant Hill, Hoagland and Brown Lake. This includes the following highways... Highway 2 between mile markers 222 and 233. Highway 92 between mile markers 221 and 228, and between mile markers 255 and 262. Highway 83 between mile markers 111 and 140. 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. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. 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 4186 10058 4197 10023 4147 9996 4145 10066 TIME...MOT...LOC 2135Z 323DEG 15KT 4181 10046 JWS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 3:48 PM CDT | Special Weather Statement | LBF | Thomas | 42 min |
| Jul 27, 3:53 PM CDT | Special Weather Statement | LBF | Chase | 37 min |
| Jul 27, 5:14 PM CDT | Special Weather Statement | LBF | Logan | 46 min |
| Jul 27, 5:17 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 43 min |
| Jul 27, 5:57 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 48 min |
| Jul 27, 6:46 PM CDT | Special Weather Statement | LBF | Brown | 44 min |
Nearby
Special Weather Statements in Nebraska, 2018Every special weather statement in 2018
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.