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April 1980 Weather History at Tri-Cities Regional TN/VA Airport United States

This report shows the past weather for Tri-Cities Regional TN/VA Airport, providing a weather history for April 1980. It features all historical weather data series we have available, including the Tri-Cities Regional TN/VA Airport temperature history for April 1980. You can drill down from year to month and even day level reports by clicking on the graphs.

Tri-Cities Regional TN/VA Airport Temperature History April 1980

History:19821981JFMAprMJJASOND19791978
Temperature history in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303030°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°FMarMay
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Hourly Temperature in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMaycoldcoolwarmvery cold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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Cloud Cover in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Cloud Cover in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMay
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.

Daily Precipitation in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Daily Precipitation in April 1980 at Tri-Cities Regional TN/VA Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 inMarMay
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Observed Weather in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMay
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.
DayObservationsPrecipitationCodes
Thu, Apr 3 Thunderstorm with Rain, Showers of Light RainTSRA, -SHRA
Fri, Apr 4 Showers of Light Rain, Fog0.45 in-SHRA, FG
Mon, Apr 7 Light Rain-RA
Tue, Apr 8 Thunderstorm with Light Rain, Light Rain, Showers of Light Rain0.32 in-TSRA, -RA, -SHRA
Sat, Apr 12 Rain, Light Rain, Fog0.22 inRA, -RA, FG
Sun, Apr 13 Rain, Light Rain, Fog0.27 inRA, -RA, FG
Mon, Apr 14 Light Rain0.04 in-RA
Tue, Apr 15 Light Rain, Fog0.05 in-RA, FG
Wed, Apr 16 Light Rain, Fog, Sky-Obscuring Fog0.15 in-RA, IWC61, FG, IWC45
Thu, Apr 24 Thunderstorm, Thunderstorm with Light Rain, Thunderstorm with Rain, Showers of Light Rain0.31 inTS, IWC17, -TSRA, IWC95, IWC80
Fri, Apr 25 Light Rain, Fog-RA, FG
Sat, Apr 26 Rain, Light Rain, Fog0.61 inRA, -RA, FG
Sun, Apr 27 Thunderstorm with Rain, Showers of Rain, Light Rain, Showers of Light Rain, Fog0.47 inTSRA, SHRA, -RA, -SHRA, FG
Mon, Apr 28 Light Rain, Showers of Light Rain, Fog0.03 in-RA, -SHRA, FG
Tue, Apr 29 Rain, Light Rain, Fog0.46 inRA, -RA, FG

Hours of Daylight and Twilight in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Hours of Daylight and Twilight in April 1980 at Tri-Cities Regional TN/VA Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrMarMaynightnightdaydayApr 112 hr, 37 minApr 112 hr, 37 minApr 3013 hr, 40 minApr 3013 hr, 40 minApr 1112 hr, 59 minApr 1112 hr, 59 minApr 2113 hr, 21 minApr 2113 hr, 21 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

Sunrise & Sunset with Twilight and Daylight Saving Time in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Sunrise & Sunset with Twilight and Daylight Saving Time in April 1980 at Tri-Cities Regional TN/VA Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMMarMay5:41 AM5:41 AMApr 267:13 PMApr 267:13 PM6:15 AM6:15 AMApr 16:52 PMApr 16:52 PM6:01 AM6:01 AMApr 117:00 PMApr 117:00 PM5:47 AM5:47 AMApr 217:09 PMApr 217:09 PMApr 27DSTApr 27DST
The solar day over the course of April 1980. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Solar Elevation and Azimuth in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Solar Elevation and Azimuth in April 1980 at Tri-Cities Regional TN/VA AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMMarMay001020203030405050606000101020303040405060
northeastsouthwest
Solar elevation and azimuth over the course of April 1980. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

Moon Rise, Set & Phases in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Moon Rise, Set & Phases in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMMarMayMar 3110:14 AMMar 3110:14 AMApr 1410:47 PMApr 1410:47 PMApr 303:36 AMApr 303:36 AM6:07 PM6:07 PM6:31 AM6:31 AM5:51 AM5:51 AM6:41 PM6:41 PM7:46 PM7:46 PM7:07 AM7:07 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Apr 1980IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
100%-7:01 AMW7:56 PME1:02 AMS251,847 mi
2
98%-7:32 AMW8:51 PMESE1:45 AMS250,912 mi
3
94%-8:05 AMWSW9:47 PMESE2:29 AMS249,563 mi
4
88%-8:42 AMWSW10:44 PMESE3:15 AMS247,785 mi
5
80%-9:22 AMWSW11:40 PMESE4:03 AMS245,561 mi
6
72%-10:07 AMWSW-4:53 AMS242,897 mi
7
61%12:35 AMESE10:58 AMWSW-5:46 AMS239,830 mi
8
50%1:28 AMESE11:54 AMWSW-6:41 AMS236,456 mi
9
39%2:18 AMESE12:55 PMWSW-7:36 AMS232,941 mi
10
28%3:06 AMESE2:00 PMWSW-8:33 AMS229,523 mi
11
18%3:50 AMESE3:08 PMWSW-9:28 AMS226,497 mi
12
9%4:31 AME4:18 PMW-10:24 AMS224,181 mi
13
3%5:11 AME5:30 PMW-11:19 AMS222,860 mi
14
0%5:51 AME6:41 PMW-12:14 PMS222,729 mi
15
1%6:31 AME7:52 PMWNW-1:10 PMS223,848 mi
16
4%7:13 AMENE9:02 PMWNW-2:05 PMS226,118 mi
17
10%7:58 AMENE10:09 PMWNW-3:02 PMS229,306 mi
18
18%8:46 AMENE11:11 PMWNW-3:58 PMS233,084 mi
19
28%9:37 AMENE--4:52 PMS237,093 mi
20
38%-12:08 AMWNW10:30 AMENE5:45 PMS240,996 mi
21
50%-12:59 AMWNW11:26 AMENE6:36 PMS244,516 mi
22
59%-1:44 AMWNW12:21 PMENE7:24 PMS247,456 mi
23
68%-2:24 AMWNW1:17 PMENE8:10 PMS249,700 mi
24
77%-3:00 AMWNW2:12 PMENE8:54 PMS251,206 mi
25
85%-3:33 AMW3:07 PME9:37 PMS251,991 mi
26
91%-4:03 AMW4:01 PME10:18 PMS252,115 mi
27
92%-5:33 AMW5:55 PME1:45 AMWSW252,084 mi
28
96%-6:03 AMW6:50 PME12:00 AMS251,665 mi
29
99%-6:34 AMW7:46 PMESE12:43 AMS250,736 mi
30
100%-7:07 AMWSW8:42 PMESE1:27 AMS249,419 mi

Humidity Comfort Levels in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Humidity Comfort Levels in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMay
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Wind Speed in April 1980 at Tri-Cities Regional TN/VA Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphMarMay
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Hourly Wind Speed in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMay
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Hourly Wind Direction in 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMay
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in April 1980 at Tri-Cities Regional TN/VA Airport

History:19821981JFMAprMJJASOND19791978
Atmospheric Pressure in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.4 inHg29.4 inHg29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHgMarMay
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

Reports by Month

Reports by Month at Tri-Cities Regional TN/VA Airport1940195019601970198019902000201020201948194819491949195019501951195119521952195319531954195419551955195619561957195719581958195919591960196019611961196219621963196319641964196519651966196619671967196819681969196919701970197119711972197219731973197419741975197519761976197719771978197819791979198019801981198119821982198319831984198419851985198619861987198719881988198919891990199019911991199219921993199319941994199519951996199619971997199819981999199920002000200120012002200220032003200420042005200520062006200720072008200820092009201020102011201120122012201320132014201420152015201620162017201720182018201920192020202020212021202220222023202320242024
METARISDboth
The number of reports per month over the entire history of this station.

Number of Reports by Day in April 1980 at Tri-Cities Regional TN/VA Airport Spring 1980

Number of Reports by Day in April 1980 at Tri-Cities Regional TN/VA Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300024244848MarMay
regularspecialcorrection
The number of reports per day.

Reports by Hour in April 1980 at Tri-Cities Regional TN/VA Airport Spring 1980

Reports by Hour in April 1980 at Tri-Cities Regional TN/VA Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMMarMay
regularspecialcorrection
Indication of what types of reports were recorded during each hour.

This report graphically illustrates the historical weather reports recorded by the weather station at Tri-Cities Regional TN/VA Airport in April 1980.

METAR Reports

Airport weather stations throughout the world routinely issue METAR weather reports . Such reports are used by pilots, air traffic controllers, meteorologists, climatologists, and other researchers. They are published via radio transmission and on the internet. We have been collecting and archiving published METAR reports since 2011, and have found third-party sources for archived reports from years prior to that.

ISD Reports

The Integrated Surface Database (ISD), maintained and published by NOAA's National Center for Environmental Information , consists of hourly and synoptic weather reports from a variety of sources. We use ISD data to complement and backfill for our METAR archive.

Other Data

The sources for the averages shown in the daily temperature chart are discussed in greater detail on this station's Averages Report.

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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