Sunday, April18, 2021
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Marine Weather and Tides
Hemby Bridge, NC

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1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:44AMSunset 7:59PM Sunday April 18, 2021 3:49 PM EDT (19:49 UTC) Moonrise 10:00AMMoonset 12:15AM Illumination 43% Phase: First Quarter Moon; Moon at 7 days in cycle
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.
Marine Forecasts
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7 Day Forecast for Marine Location Near Hemby Bridge, NC
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location: 35.11, -80.62     debug


Area Discussion for - Greenville-Spartanburg, SC
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FXUS62 KGSP 181901 AFDGSP

Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 301 PM EDT Sun Apr 18 2021

SYNOPSIS. A couple of weak low pressure systems will move along a stationary front stretching from the central Gulf Coast to the southeast coastline through Monday. A cold front crosses the area Wednesday, with much below normal temperatures across the region for a couple of days. A more significant low pressure may cross our region Saturday and Saturday night.

NEAR TERM /THROUGH MONDAY/. As of 240 PM Sunday: a healthy cumulus field has developed across most of the CWA with a few patches of cirrus continuing to stream overhead from the west. With quasi-zonal flow aloft and a 100-120 kt jet streak streaming over the area, expect more high-lvl clouds to push over the region thru the day and into the evening, but less in coverage compared to yesterday due to drier air entraining thru the atmospheric column. At the sfc, an area of high pressure will set up over the OH Valley and parts of the mid-Atl. Winds are beginning to back to more of a W/SW direction as a lee trough develops this aftn With the shift in the winds and less cloud cover overall, expect for temps to uptick a few degrees today as the major mountain valleys reach into the 60s, while locations outside of the mountains reach into the low to mid 70s. As the upper shortwave approaches the area tonight, enough upper forcing could allow for light precipitation to develop along and north of the I-40 corridor. QPF response should be less than 0.10" for any locations that receive precip. The shortwave should remain over NC during its passage and escape the Upstate and NE GA, however light precip can't be ruled out over the NC Piedmont. Low temps will continue to run at or slightly above normal for mid April.

SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/. As of 230 PM Sunday: the short-term fcst picks up at 00z on Tuesday with an upper shortwave moving east of the area as heights briefly recover over the CWA. The break between systems is short as a weak southern stream upper shortwave crosses the area on Tuesday, then a stronger northern stream shortwave moves by just to our north on Wednesday. Clouds decrease Monday as the wave moves east and high pressure briefly builds in Monday night. A weak sfc low forms along the stalled frontal boundary near the Gulf Coast on Tuesday. There is some moisture and forcing over the area, so isolated showers are possible. Precip chances decrease Tuesday night before increasing again Wednesday as the cold front associated with the next short wave moves into the area. Moisture will be limited despite the decent upper forcing, so precip chances will be higher across the northern tier of the CWA where the moisture and forcing better align. Any QPF amounts should be minimal. Highs will be near to just above normal on Tuesday and below normal on Wednesday as the cold front crosses the area. Lows Tuesday morning should be near normal, and about 5 degrees above normal Wednesday morning.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/. As of 2 PM EDT Sunday: The cold front is expected to cross our area by midday Wednesday and should be well off the Carolina coast by Wednesday evening. The center of the cold surface high pressure should be over Arkansas Wednesday evening providing cold air advection across the southern Appalachians. The models have depictions of weak blobs of precip from Kentucky into Virginia Wednesday night through Thursday but affects on the NC mountains appear negligible at this time. The record low for Asheville on Thursday is 30 and the forecast is to be near that temperature Thursday morning. Record lows for Apr 22 at CLT 33 and GSP 32. The cold high modifies a bit as it will be overhead on Friday morning. Forecast lows on Fri AM should be a few degrees milder but still frost and freeze for much of the NC mountains. The high moves east and over the Atlantic by late Friday with low pressure approaching from the west.

The GFS continues to have a northern stream and southern stream system coming at our area from the west. The trend with the GFS is to delay our rain until later basically splitting our area going just north and just south of the forecast area until Saturday evening. By that time on the GFS, a stronger wave moves east from Texas bringing rain to Georgia and SC through Sunday evening. This feature is fairly new in trending stronger so will differ from giving it high confidence On the other hand. the ECMWF has been consistently stronger with its low pressure. The EC has our area dry at 12Z Saturday with the leading edge of rain reaching the western zones by 18Z Sat then the bulk of rain crossing Saturday evening to near midnight. EC has us gradually drying out from the west during Sunday with brief wrap around into Sunday evening along TN and NC border Considering the contrast. still choosing middle ground among models If the EC becomes the more favored outcome. the chance of thunder will increase.

Temperatures much below normal Wed night and Thursday then gradually nearing normal for max temps through weekend.

AVIATION /19Z SUNDAY THROUGH FRIDAY/. At KCLT and Elsewhere: expect VFR conditions to continue thru the 18z taf period. Sct altocu and cirrus will continue to move over the fcst area thru the period within the brisk upper flow. With high pressure building in across the Central Appalachians to the northern Mid-Atlantic, winds will shift back to WLY/SWLY east of the mtns as a lee trof develops this aftn. They will weaken later tonight and eventually pick back up from the NW tomorrow aftn. Winds at KAVL should remain NLY/NWLY. A shortwave will push thru early tomorrow and may produce a few light showers over KHKY and KCLT but at this time, confidence is too low to mention in tafs.

Outlook: High pressure will spread back over the region later tomorrow and linger thru Tuesday. A cold front will then cross the region from the west on Wednesday, accompanied by modest moisture and possible restrictions.

Confidence Table .

19-01Z 01-07Z 07-13Z 13-18Z KCLT High 100% High 100% High 100% High 100% KGSP High 100% High 100% High 100% High 100% KAVL High 100% High 100% High 100% High 100% KHKY High 100% High 100% High 100% High 98% KGMU High 100% High 100% High 100% High 100% KAND High 100% High 100% High 100% High 100%

The percentage reflects the number of guidance members agreeing with the scheduled TAF issuance flight rule category. Complete hourly experimental aviation forecast consistency tables are available at the following link:

www.weather.gov/gsp/aviation

CLIMATE. RECORDS FOR 04-22

MAX TEMPERATURE MIN TEMPERATURE STATION HIGH LOW HIGH LOW ------- ---------- ---------- ---------- ---------- KAVL 86 1963 46 1927 62 1964 30 1953 1896 KCLT 91 1963 47 1901 66 1909 33 1978 1957 KGSP 90 1963 43 1901 68 1896 32 1978


RECORDS FOR 04-23

MAX TEMPERATURE MIN TEMPERATURE STATION HIGH LOW HIGH LOW ------- ---------- ---------- ---------- ---------- KAVL 88 1960 42 1903 61 1957 29 1986 KCLT 91 1980 51 1901 64 1920 35 1986 1963 1960 KGSP 91 1980 48 1901 66 1920 32 1982 1963 1960

GSP WATCHES/WARNINGS/ADVISORIES. GA . None. NC . None. SC . None.

SYNOPSIS . DEO NEAR TERM . JPT SHORT TERM . JPT LONG TERM . DEO AVIATION . JPT CLIMATE . DEO


Weather Reporting Stations
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On 03/09/2021 the NDBC primary processing servers were shut off due to a facilities issue. Station pages on the NDBC website are not updating and there is no ETR at this time. We will update this banner as we learn more.
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WATS1 - Lake Wateree, SC 54 mi79 min N 1.9 G 4.1 76°F 1011.2 hPa
LMFS1 - Lake Murray SC 77 mi29 min W 8.9 G 12 71°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Monroe, Monroe Airport, NC6 mi56 minVar 410.00 miMostly Cloudy70°F43°F38%1011.4 hPa
Charlotte, Charlotte / Douglas International Airport, NC18 mi57 minVar 310.00 miMostly Cloudy71°F40°F32%1010.9 hPa
Concord Regional Airport, NC20 mi59 minN 010.00 miPartly Cloudy66°F37°F35%1012.2 hPa

Link to 5 minute data for KEQY

Wind History from EQY (wind in knots)
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Last 24hrCalmSW5CalmW6CalmCalmNE5NE5NE4NE4NE3NE4NE3N3CalmNE5N6NE9NE10NE3--E634
1 day agoW12SW6W8SW7CalmS3CalmSW4W3CalmCalmCalmCalmNE6E3E3434CalmCalm3CalmCalm
2 days agoW8W6
G17
NW12
G17
NW7N3CalmN9N8N5N8N8N7N7N5CalmCalmCalm--NW6NW645S5NW5

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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