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diff --git a/server/scripts/modules/radar-utils.mjs b/server/scripts/modules/radar-utils.mjs
index d2b46a7..f45bd34 100644
--- a/server/scripts/modules/radar-utils.mjs
+++ b/server/scripts/modules/radar-utils.mjs
@@ -77,9 +77,9 @@ const removeDopplerRadarImageNoise = (RadarContext) => {
 
 		// is this pixel the old rgb?
 		if ((R === 0 && G === 0 && B === 0)
-					|| (R === 0 && G === 236 && B === 236)
-					|| (R === 1 && G === 160 && B === 246)
-					|| (R === 0 && G === 0 && B === 246)) {
+			|| (R === 0 && G === 236 && B === 236)
+			|| (R === 1 && G === 160 && B === 246)
+			|| (R === 0 && G === 0 && B === 246)) {
 			// change to your new rgb
 
 			// Transparent
@@ -124,14 +124,14 @@ const removeDopplerRadarImageNoise = (RadarContext) => {
 			B = 19;
 			A = 255;
 		} else if ((R === 214 && G === 0 && B === 0)
-					|| (R === 255 && G === 0 && B === 0)) {
+			|| (R === 255 && G === 0 && B === 0)) {
 			// Red
 			R = 171;
 			G = 14;
 			B = 14;
 			A = 255;
 		} else if ((R === 192 && G === 0 && B === 0)
-					|| (R === 255 && G === 0 && B === 255)) {
+			|| (R === 255 && G === 0 && B === 255)) {
 			// Brown
 			R = 115;
 			G = 31;
@@ -177,9 +177,44 @@ const mergeDopplerRadarImage = (mapContext, radarContext) => {
 	mapContext.drawImage(radarContext.canvas, 0, 0);
 };
 
+const tileSize = { x: 510, y: 320 };
+const radarFullSize = { width: 2550, height: 1600 };
+const radarFinalSize = { width: 640, height: 367 };
+const radarSourceSize = { width: 480, height: 276 };
+const scaling = {
+	width: radarFinalSize.width / radarSourceSize.width,
+	height: radarFinalSize.height / radarSourceSize.height,
+};
+
+// convert a pixel location to a file/tile combination
+const pixelToFile = (xPixel, yPixel) => {
+	const xTile = Math.floor(xPixel / tileSize.x);
+	const yTile = Math.floor(yPixel / tileSize.y);
+	if (xTile < 0 || xTile > 9 || yTile < 0 || yTile > 9) return false;
+	return `${xTile.toFixed(0).padStart(2, '0')}-${yTile.toFixed(0).padStart(2, '0')}`;
+};
+
+// convert a pixel location in the overall map to a pixel location on the tile
+const modTile = (xPixel, yPixel) => {
+	const x = Math.round(xPixel) % tileSize.x;
+	const y = Math.round(yPixel) % tileSize.y;
+	return { x, y };
+};
+
+const mapSizeToFinalSize = (x, y) => ({
+	x: Math.round(x * scaling.height),
+	y: Math.round(y * scaling.width),
+});
+
 export {
 	getXYFromLatitudeLongitudeDoppler,
 	getXYFromLatitudeLongitudeMap,
 	removeDopplerRadarImageNoise,
 	mergeDopplerRadarImage,
+	pixelToFile,
+	modTile,
+	mapSizeToFinalSize,
+	tileSize,
+	radarFinalSize,
+	radarFullSize,
 };
diff --git a/server/scripts/modules/radar-worker.mjs b/server/scripts/modules/radar-worker.mjs
index 75cc6e9..289477e 100644
--- a/server/scripts/modules/radar-worker.mjs
+++ b/server/scripts/modules/radar-worker.mjs
@@ -1,15 +1,15 @@
-import * as utils from './radar-utils.mjs';
-
-const radarFullSize = { width: 2550, height: 1600 };
-const radarFinalSize = { width: 640, height: 367 };
+import {
+	radarFinalSize, radarFullSize, pixelToFile, modTile, tileSize, removeDopplerRadarImageNoise, mapSizeToFinalSize,
+} from './radar-utils.mjs';
 
 const fetchAsBlob = async (url) => {
 	const response = await fetch(url);
 	return response.blob();
 };
 
-const baseMapImages = new Promise((resolve) => {
-	fetchAsBlob('/images/maps/radar.webp').then((blob) => {
+const baseMapImages = (tile) => new Promise((resolve) => {
+	if (tile === false) resolve(false);
+	fetchAsBlob(`/images/maps/radar-tiles/${tile}.webp`).then((blob) => {
 		createImageBitmap(blob).then((imageBitmap) => {
 			// extract the black pixels to overlay on to the final image (boundaries)
 			const canvas = new OffscreenCanvas(imageBitmap.width, imageBitmap.height);
@@ -28,13 +28,17 @@ const baseMapImages = new Promise((resolve) => {
 			context.putImageData(imageData, 0, 0);
 
 			resolve({
-				fullMap: imageBitmap,
+				base: imageBitmap,
 				overlay: canvas,
 			});
 		});
 	});
 });
 
+const drawOnBasemap = (baseContext, drawImage, positions) => {
+	baseContext.drawImage(drawImage, positions.sx, positions.sy, positions.sw, positions.sh, positions.dx, positions.dy, positions.dw, positions.dh);
+};
+
 onmessage = async (e) => {
 	const {
 		url, RADAR_HOST, OVERRIDES, radarSourceXY, sourceXY, offsetX, offsetY,
@@ -63,9 +67,93 @@ onmessage = async (e) => {
 	const radarContext = radarCanvas.getContext('2d');
 	radarContext.imageSmoothingEnabled = false;
 
-	// get the base map
-	const baseMaps = await baseMapImages;
-	baseContext.drawImage(baseMaps.fullMap, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, radarFinalSize.width, radarFinalSize.height);
+	// determine the basemap images needed
+	const baseMapTiles = [
+		pixelToFile(sourceXY.x, sourceXY.y),
+		pixelToFile(sourceXY.x + offsetX * 2, sourceXY.y),
+		pixelToFile(sourceXY.x, sourceXY.y + offsetY * 2),
+		pixelToFile(sourceXY.x + offsetX * 2, sourceXY.y + offsetY * 2),
+	];
+
+	// get the base maps
+	const baseMapsPromise = Promise.allSettled(baseMapTiles.map(baseMapImages));
+
+	// do some more calculations for assembling the tiles
+	// the tiles are arranged as follows, with the horizontal axis as x, and correlating with the second set of digits in the image file number
+	// T[0] T[1]
+	// T[2] T[3]
+	// tile 0 gets special treatment, it's placement is the basis for all downstream calculations
+	const t0Source = modTile(sourceXY.x, sourceXY.y);
+	const t0Width = tileSize.x - t0Source.x;
+	const t0Height = tileSize.y - t0Source.y;
+	const t0FinalSize = mapSizeToFinalSize(t0Width, t0Height);
+
+	// these will all be used again for the overlay, calculate them once here
+	const mapCoordinates = [];
+	// t[0]
+	mapCoordinates.push({
+		sx: t0Source.x,
+		sw: t0Width,
+		dx: 0,
+		dw: t0FinalSize.x,
+
+		sy: t0Source.y,
+		sh: t0Height,
+		dy: 0,
+		dh: t0FinalSize.y,
+	});
+	// t[1]
+	mapCoordinates.push({
+		sx: 0,
+		sw: tileSize.x - t0Width,
+		dx: t0FinalSize.x,
+		dw: mapSizeToFinalSize(tileSize.x - t0Width, 0).x,
+
+		sy: t0Source.y,
+		sh: t0Height,
+		dy: 0,
+		dh: t0FinalSize.y,
+	});
+	// t[2]
+	mapCoordinates.push({
+		sx: t0Source.x,
+		sw: t0Width,
+		dx: 0,
+		dw: t0FinalSize.x,
+
+		sy: 0,
+		sh: tileSize.y - t0Height,
+		dy: t0FinalSize.y,
+		dh: mapSizeToFinalSize(0, tileSize.y - t0Height).y,
+	});
+	// t[3]
+	mapCoordinates.push({
+		sx: 0,
+		sw: tileSize.x - t0Width,
+		dx: t0FinalSize.x,
+		dw: mapSizeToFinalSize(tileSize.x - t0Width, 0).x,
+
+		sy: 0,
+		sh: tileSize.y - t0Height,
+		dy: t0FinalSize.y,
+		dh: mapSizeToFinalSize(0, tileSize.y - t0Height).y,
+	});
+
+	// wait for the basemaps to arrive
+	const baseMaps = (await baseMapsPromise).map((map) => map.value ?? false);
+
+	// draw each tile if needed
+	drawOnBasemap(baseContext, baseMaps[0].base, mapCoordinates[0]);
+	if (mapCoordinates[1].dx < radarFinalSize.width && baseMaps[1]) {
+		drawOnBasemap(baseContext, baseMaps[1].base, mapCoordinates[1]);
+	}
+	if (mapCoordinates[2].dy < radarFinalSize.height && baseMaps[2]) {
+		drawOnBasemap(baseContext, baseMaps[2].base, mapCoordinates[2]);
+		if (mapCoordinates[1].dx < radarFinalSize.width && baseMaps[3]) {
+			drawOnBasemap(baseContext, baseMaps[3].base, mapCoordinates[3]);
+		}
+	}
+	// baseContext.drawImage(baseMaps.fullMap, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, radarFinalSize.width, radarFinalSize.height);
 
 	// test response
 	const radarResponse = await radarResponsePromise;
@@ -87,7 +175,7 @@ onmessage = async (e) => {
 	croppedRadarContext.drawImage(radarCanvas, radarSource.x, radarSource.y, croppedRadarCanvas.width, croppedRadarCanvas.height, 0, 0, croppedRadarCanvas.width, croppedRadarCanvas.height);
 
 	// clean the image
-	utils.removeDopplerRadarImageNoise(croppedRadarContext);
+	removeDopplerRadarImageNoise(croppedRadarContext);
 
 	// stretch the radar image
 	const stretchCanvas = new OffscreenCanvas(radarFinalSize.width, radarFinalSize.height);
@@ -97,8 +185,17 @@ onmessage = async (e) => {
 
 	// put the radar on the base map
 	baseContext.drawImage(stretchCanvas, 0, 0);
-	// put the road/boundaries overlay on the map
-	baseContext.drawImage(baseMaps.overlay, sourceXY.x, sourceXY.y, offsetX * 2, offsetY * 2, 0, 0, radarFinalSize.width, radarFinalSize.height);
+	// put the road/boundaries overlay on the map as needed
+	drawOnBasemap(baseContext, baseMaps[0].overlay, mapCoordinates[0]);
+	if (mapCoordinates[1].dx < radarFinalSize.width && baseMaps[1]) {
+		drawOnBasemap(baseContext, baseMaps[1].overlay, mapCoordinates[1]);
+	}
+	if (mapCoordinates[2].dy < radarFinalSize.height && baseMaps[2]) {
+		drawOnBasemap(baseContext, baseMaps[2].overlay, mapCoordinates[2]);
+		if (mapCoordinates[1].dx < radarFinalSize.width && baseMaps[3]) {
+			drawOnBasemap(baseContext, baseMaps[3].overlay, mapCoordinates[3]);
+		}
+	}
 
 	const processedRadar = baseCanvas.transferToImageBitmap();