Rapid City, SD Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Rapid City, SD

April 16, 2024 2:17 PM MDT (20:17 UTC) Change Location
Sunrise 6:04 AM   Sunset 7:40 PM
Moonrise 12:23 PM   Moonset 3:24 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Rapid City, SD
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Area Discussion for - Rapid City, SD
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FXUS63 KUNR 161751 AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY National Weather Service Rapid City SD 1151 AM MDT Tue Apr 16 2024

KEY MESSAGES

- Showery and windy today, with strong north-northwest winds expected over the west central SD plains.

- Unsettled, windy, and colder weather expected for the rest of the week and into the early part of the weekend.

DISCUSSION
(Today Through Monday)
Issued at 256 AM MDT Tue Apr 16 2024

Current surface analysis shows strong low pressure over north central NE, with warm front extending east-southeast across eastern NE. Cold front extends south across western KS and into the TX/OK panhandles. Upper level analysis shows low over far northwest KS, with trough covering much of the eastern Rockies and Plains. KUDX radar shows decaying MCS across northwest SD with light to moderate rainfall and areas of gusty winds. Scattered showers and thunderstorms are noted further east toward central SD, with isolated/scattered lighter showers from most of northeast WY to southwest SD. Temps are mostly in the upper 40s and 50s, with 60s over south central SD. Strong winds earlier over west central SD have tapered off for the time being, with breezy conditions in many areas early this morning.

Upper low continues to track east-northeast across NE today and into northwest IA this evening. Surface low tracks east to northwest IA by this evening as well. Fairly widespread showers will continue early this morning from the Black Hills area eastward, with a few thunderstorms still expected, mostly to the east of the Black Hills and into south central SD. The heaviest rainfall today will generally be across areas toward central SD and over the northern Black Hills as upslope enhanced rainfall develops there this morning. Probabilities for a half inch or more of additional rainfall are near or above 50 percent in these areas. Creeks and rivers will be elevated over the next couple of days and there are at least some low chances for localized minor flooding where the heaviest rainfall has occurred. Showers will generally taper off from west to east later this morning through the early evening on the back side of the system. Strong winds will be the other concern today as pressure gradient tightens to the northwest of the low. The strongest winds will mostly be just to the east of the Black Hills and across southern portions of northeast WY, where forecast soundings have 50+ kt winds near the top of the boundary layer later this morning and afternoon. Have issued high wind warnings in these areas for some gusts of 55 to 65 mph.
Elsewhere across the southwest SD plains, a wind advisory has been issued. Will let dayshift monitor whether the advisory needs to be expanded for later today, possibly into south central SD. Winds will drop off rather quickly late today and this evening.

The rest of the week looks to be somewhat unsettled and windy at times, with northwest flow aloft developing across the region. An upper low tracks across south central Canada midweek, dragging colder air into the northern Plains. Shortwave energy rotating well southwest of the low will bring chances for light rain and higher elevation snow Wednesday into Wednesday night, mainly from northeast WY to southwest SD. Any snow accumulations look to be pretty light, up to a few inches over the higher Black Hills. Cool, but drier, weather will prevail through at least Saturday as Canadian high to the northwest gradually settles over the region. A weak disturbance or two could bring clouds and a few showers at times late week into Saturday, especially over the Black Hills, but many areas will be dry. Brisk winds can be expected at times through Friday, especially during the late morning and afternoon hours. As the surface high slides east of the region later this weekend, warmer air will return to the area, with above average temps likely by Monday.

AVIATION
(For the 18Z TAFS Through 18Z Wednesday)
Issued At 1151 AM MDT Tue Apr 16 2024

Strong and gusty northwest winds will continue through the day, especially on the plains to the east of the Black Hills. The wind will diminish early this evening. Scattered showers, with a few thunderstorms possible, are expected today, especially around south central SD. Rain will end from west to east through the afternoon and evening. Areas of MVFR/LCL IFR CIGS are expected mainly over central South Dakota, gradually improving to VFR through this evening.

UNR WATCHES/WARNINGS/ADVISORIES
SD...Wind Advisory until 6 PM MDT this evening for SDZ026-032-041-043- 044-072-074>077.
High Wind Warning until 6 PM MDT this evening for SDZ030-031-042- 073.
WY...High Wind Warning until 3 PM MDT this afternoon for WYZ055-058.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KRAP RAPID CITY RGNL,SD 9 sm25 minNNW 34G4710 smClear61°F39°F45%29.59
KRCA ELLSWORTH AFB,SD 9 sm22 minNNW 34G4510 smMostly Cloudy61°F41°F48%29.56
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Wind History from RAP
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