Dear Authors, Both Referees evaluated the manuscript as GOOD, and declared their willingness to check again the manuscript after your revision.

From my part, I have two main comments.

1-
I strongly agree with comments (3) and (5) from Refereee#2: these are the main drawbacks of your manuscript. If you fix these problems, you would obtain a very strong and high quality article. Therefore, I encourage you to fully address these two important points.

2-
I would like to invite you to consider the possibility to include in the revised text some citations from other works of the special issue. This would strengthen the linkage among the contributions received inside the special issue. You can find a list of the works published in NHESS or in NHESSD here: https://www.nat-hazards-earth-syst-sci.net/special_issue896.html

I look forward to receive the new version of your promising manuscript.

Regards,
S.

Dear Authors,
as both referees were generally satisfied with your responses and revisions, I took the decision to accept your manuscript for publication.
I only recommend you to perform the last, minor corrections suggested by referees.
After that, I will not send the manuscript in review again, I will just perform a final check on my own.
Regards,
S.

Dear authors, I'm glad to announce that your manuscript is almost ready for publication.
I suggest you a few very minor technical corrections (see below).
Thank you for taking part in the special issue.
Regards,
S.


P11L8 use --> uses

P11L15 This outcome is in accordance with some works published in the same special issue. Since NHESS guidelines invite the editors to foster the linkages between different works of the same special issue, I suggest you to modify the sentence adding some references. As instance:
"The best performance was obtained when the relative water supply and the soil water saturation degree were combined. This result is not surprising and is in line with the findings of some recent works on landslide rainfall thresholds (Capra et al., 2018; Segoni et al., 2018).
Lucia Capra, Velio Coviello, Lorenzo Borselli, Víctor-Hugo Márquez-Ramírez, and Raul Arámbula-Mendoza - Hydrological control of large hurricane-induced lahars: evidence from rainfall-runoff modeling, seismic and video monitoring - Nat. Hazards Earth Syst. Sci., 18, 781-794, https://doi.org/10.5194/nhess-18-781-2018, 2018
Samuele Segoni, Ascanio Rosi, Daniela Lagomarsino, Riccardo Fanti, and Nicola Casagli - Brief communication: Using averaged soil moisture estimates to improve the performances of a regional-scale landslide early warning system - Nat. Hazards Earth Syst. Sci., 18, 807-812, https://doi.org/10.5194/nhess-18-807-2018, 2018

P19L16 include --> includes