September 19th: Tuesday felt distinctly summer-like with a high temperature of 90 and the dew point hovering around 70 on breezy south winds. This was quite a contrast from Monday’s maximum of 78 following the heavy late morning thundershowers.
Speaking of Monday’s late morning rainfall, the Lawrence 7-station average precipitation was 0.61 inches in the 24-hour period ending at 7 AM Tuesday. The airport picked up another hundredth of an inch early Tuesday morning from some early morning showers that brushed north Lawrence but mostly missed to our east, bringing the airport 24-hour total to 0.37 inches. While the airport rainfall figure for Monday’s event is only about 61 percent of the Lawrence city average, in this case the difference appears to reflect actual local variability.
Southwest Lawrence again picked up the most precipitation in our 7-site Lawrence network with both stations in that part of town measuring 0.80 inches. The three northwest Lawrence rainfall sites averaged 0.44 inches. The two stations in east-central Lawrence averaged out to 0.675 inches (one was 0.67 and the other 0.68 inches).
An updated 7-station Lawrence average from the major event late Saturday night and early Sunday morning came in at 2.59 inches after a late report was averaged in from one of our seven Lawrence measuring sites. (People are not always home, after all, even within the CoCoRaHS Network). The 2.59-inch Lawrence 7-station average came in close to the 2.63 inches measured at the airport.
For the month, the total at the Lawrence Airport is now 3.00 inches, compared to a normal month-to-date of 2.74 inches. The Lawrence 7-station average total for the month is 3.22 inches.
For the year to date, the Lawrence 7-station precipitation average is 38.69 inches, compared to a normal year to date of 30.60 inches. Ignoring several equipment malfunctions, the NWS reports the Lawrence year to date precipitation as 30.14 inches.