Negative evaporation rates with hot/dry weather

[deckerego]

Noticing some odd evaporation rates with otherwise dry and hot weather. Some examples:

1 Day Precip	Future Precip	Total Precip	Precipitable	Cloud Water	Prev Spec Humid	Future Spec Humid	Humid Increase	Prev Temp	Future Temp	Wind Speed	Evap Rate	Evap Nerfed	Dry Soil	Auto-Enabled
0	0	0	37.409134	0	0.0117696365	0.0127004795	107.91%	299.55197	304.67487	8.619649081	-0.2815857016	-0.1407928508	TRUE	FALSE
0	0	0	36.412647	0	0.012981415	0.013911703	107.17%	299.42398	304.63098	8.211485149	0.001225756037	0.0006128780184	TRUE	TRUE
0	1.836	1.836	51.000793	0.16608	0.014531498	0.013773032	94.78%	304.25067	303.9346	4.785529102	-0.08597516161	-0.04298758081	TRUE	FALSE

I'm not sure why we would have negative evaporation values for these days... need to reverse the math to see what's going on.

Note that this was during a "heat dome" event where there was high humidity, low heat escape rates overnight, and very high heat indexes. Not sure if the high moisture and stationary high-pressure system causes these results.

[deckerego]

Still doesn't make much sense during the heat dome:

1 Day Precip	Future Precip	Total Precip	Precipitable	Cloud Water	Prev Spec Humid	Future Spec Humid	Humid Increase	Prev Temp	Future Temp	Wind Speed	Evap Rate	Evap Nerfed	Dry Soil	Auto-Enabled
0	1.836	1.836	51.000793	0.16608	0.014531498	0.013773032	94.78%	304.25067	303.9346	4.785529102	-0.08597516161	-0.04298758081	TRUE	FALSE
4.6008	7.948800108	12.54960011	51.864437	0.08688	0.01510483	0.014033197	92.91%	303.7419	304.06256	4.455171688	-0.08427256775	-0.04213628388	FALSE	FALSE
1.1664	5.33952	6.50592	48.06616	0.02656	0.016081769	0.013970457	86.87%	299.84662	304.007	4.644666831	-0.100901878	-0.100901878	FALSE	FALSE
0	4.15584	4.15584	49.620705	0.01456	0.014929513	0.013800461	92.44%	301.77435	304.01358	4.439590331	-0.03950655383	-0.03950655383	TRUE	FALSE
1.46016	0	1.46016	47.616676	0.1064	0.015172107	0.013477501	88.83%	299.3174	303.81625	5.592591168	-0.1666273501	-0.1666273501	TRUE	FALSE
1.33056	0.79488	2.12544	48.574253	0.17488	0.015291955	0.0135728745	88.76%	301.88934	304.11288	6.066009845	-0.04147207762	-0.04147207762	TRUE	FALSE
0	2.790720108	2.790720108	47.595913	0.10792	0.015281251	0.012136483	79.42%	303.23306	303.0403	6.210433333	0.2056510578	0.1028255289	TRUE	FALSE
0	1.82304	1.82304	48.636375	0.0836	0.013756746	0.012836585	93.31%	301.0581	302.7091	4.789709158	0.04778330957	0.02389165478	TRUE	FALSE
2.44512	6.3288	8.77392	49.049328	0.31983998	0.015355298	0.01406336	91.59%	300.35938	301.45117	3.859307046	-0.3852520502	-0.3852520502	TRUE	FALSE
1.4256	4.008960005	5.434560005	52.382572	0.37568	0.015137935	0.01392238	91.97%	297.86542	302.30444	2.83270828	-0.1854211217	-0.1854211217	TRUE	FALSE

[deckerego]

Can confirm things went back to normal after the heat dome passed:

1 Day Precip	Future Precip	Total Precip	Precipitable	Cloud Water	Prev Spec Humid	Future Spec Humid	Humid Increase	Prev Temp	Future Temp	Wind Speed	Evap Rate	Evap Nerfed	Dry Soil	Auto-Enabled
0.01728	0.00864	0.02592	23.251392	0.02736	0.011315523	0.0075531024	66.75%	292.3116	294.1786	8.682111701	1.012796153	1012.796153	FALSE	TRUE
0	0	0	17.445686	0.06608	0.008519082	0.007570126	88.86%	291.15012	293.94327	8.183868752	1.496490868	1496.490868	FALSE	TRUE
0	0	0	22.455227	0.11167999	0.0078014205	0.006694662	85.81%	293.4185	295.68204	7.895488121	1.101289749	1101.289749	FALSE	TRUE
0	0.03456	0.03456	23.990488	0.0144	0.007711673	0.0070016757	90.79%	290.07065	295.86038	7.158204388	1.035275682	1035.275682	FALSE	TRUE
0	0	0	40.338272	0.34127998	0.00928767	0.0069814157	75.17%	293.8026	296.0755	6.600958429	0.8716080375	871.6080375	TRUE	TRUE

[deckerego]

With cooler weather this seems to have gone back to expected values, and precipitable water / cloud water is no longer a good indicator of future precipitation.

1 Day Precip	Future Precip	Total Precip	Precipitable	Cloud Water	Prev Spec Humid	Future Spec Humid	Humid Increase	Prev Temp	Future Temp	Wind Speed	Evap Rate	Dry Soil	Auto-Enabled
0.00432	0.0648	0.06912	33.8345	0.2224	0.011114804	0.0074860505	67.35%	295.69586	296.7805	5.031319491	1.690328964	FALSE	TRUE
0	0.13392	0.13392	37.370567	0.204	0.010209237	0.0075539686	73.99%	294.73203	296.80286	6.670670196	1.42454912	FALSE	TRUE
0.13824	0.0216	0.15984	22.074818	0.06384	0.012385111	0.0065222313	52.66%	297.0554	293.7731	6.439695108	1.432627537	FALSE	TRUE
0.09504	0	0.09504	18.316597	0.21424	0.009655794	0.005990477	101.02%	291.4905	294.46298	6.692895682	1.687914952	FALSE	TRUE
0	0	0	17.675585	0.2444	0.007936567	0.005761888	72.60%	292.38916	292.24084	5.517044844	1.74776801	FALSE	TRUE
0	0	0	17.926163	0.3296	0.006841828	0.0051953867	75.94%	288.73337	292.6656	5.129999681	1.698163013	FALSE	TRUE
0	0	0	18.064558	0.13632	0.007034386	0.0049909716	70.95%	291.35635	293.98212	3.845634609	2.595441049	FALSE	TRUE
0	0	0	26.181108	0.15264	0.006754114	0.0053943745	79.87%	289.50995	293.40964	3.934913002	1.529604926	FALSE	TRUE
0	4.59648	4.59648	30.344643	0.87504	0.006284793	0.004984385	79.31%	291.11038	293.4146	4.429405055	1.451047764	FALSE	TRUE