Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
818 FOUS53 KDMX 161107 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 607 AM CDT Wed Sep 16 2026 IAZ060-162100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 72 65 79 67 84 Temp 60 62 64 67 72 68 67 67 66 69 71 75 77 71 69 68 67 71 78 83 80 Dewpt 57 59 63 66 67 68 67 67 66 69 71 72 71 71 69 68 67 70 75 77 76 RH 90 90 97 97 84100100100100100100 90 82100100100100 97 91 82 88 Wind dir NE E E E E E SE E SW N N NE NE E E E SE SE S S S Wind spd 6 6 6 5 4 3 2 2 1 2 4 3 4 5 5 6 9 11 12 12 11 Wind gust 21 Clouds B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 B1 SC FW SC PoP 12hr 40 60 60 40 40 QPF 12hr 0.16 0.35 0.08 0.10 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S C S C C L C C L C C C C S S L Tstms C S S S C C C S C C S S C Heat index 92 86 Max heat 95 Flood A A Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 81 63 71 60 70 58 72 Temp 73 70 76 76 66 64 66 69 62 60 64 67 60 58 65 68 Dewpt 71 69 72 70 66 63 64 65 62 60 61 61 60 58 61 62 PWind dir S W N NE N N NE E Wind char GN LT LT LT LT LT LT LT Avg clouds SC B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 SC SC B1 PoP 12hr 80 50 50 60 40 30 20 20 Rain shwrs L D C C C C L L C C C S S S S Tstms C C C S C C C S S $$ IAZ039-162100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 71 62 77 62 77 Temp 55 63 67 70 71 65 64 64 63 66 71 75 74 67 65 64 62 65 70 75 75 Dewpt 53 56 60 61 63 64 64 64 63 66 67 67 66 66 65 64 62 64 67 69 69 RH 93 78 78 73 76 97100100100100 87 76 76 97100100100 97 90 82 82 Wind dir NE E E E SE SE SE SE NE NE NE NE NE E E E E SE SE SE SE Wind spd 6 8 9 8 5 3 1 1 1 3 4 4 4 4 4 6 10 12 14 14 16 Clouds B2 B1 B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B1 B1 PoP 12hr 10 30 20 50 90 QPF 12hr 0 0 0 0.15 0.50 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S C C D D C C D Tstms C S C C C C C Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 78 59 69 56 69 54 72 Temp 68 66 74 72 63 59 65 67 59 56 64 66 58 55 67 68 Dewpt 68 66 69 65 62 59 60 59 59 56 58 58 57 54 58 58 PWind dir SE W NE NE NE NE NE E Wind char GN GN GN GN GN GN LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC B1 PoP 12hr 90 50 40 50 50 30 20 20 Rain shwrs D D C C C C C C C C C S S S S S Tstms L C S S S S S S S S $$ IAZ048-162100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 71 63 78 64 82 Temp 57 62 65 67 71 66 66 66 65 68 72 75 76 69 68 67 66 69 76 81 79 Dewpt 54 57 62 64 65 66 66 66 65 68 70 71 70 69 68 67 66 69 73 76 74 RH 90 84 90 90 81100100100100100 93 87 82100100100100100 90 85 85 Wind dir NE E E SE SE SE SE SE N N N NE NE E E E SE SE S S S Wind spd 6 8 8 6 4 2 1 1 1 3 4 3 3 4 4 6 9 12 12 13 12 Wind gust 23 Clouds B2 B2 B2 B2 OV B2 OV B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B1 SC B1 PoP 12hr 20 50 30 50 50 QPF 12hr 0.09 0.13 0.02 0.22 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C C C C C C C C D Tstms S S S S C S S C C S S C Heat index 87 Max heat 90 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 67 80 61 70 59 70 57 72 Temp 71 67 75 74 64 62 65 68 61 59 64 66 59 57 66 67 Dewpt 71 67 71 68 64 62 63 63 61 59 60 60 59 57 60 61 PWind dir S W N NE NE N NE E Wind char GN LT LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC SC B1 PoP 12hr 80 40 40 60 40 30 20 20 Rain shwrs D D C C C C L L C C C S S S S Tstms C C S S C C C S S $$ IAZ004-162100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 71 59 75 60 75 Temp 49 61 68 70 69 62 61 60 61 66 71 73 72 64 62 60 62 64 70 74 72 Dewpt 47 52 54 57 61 61 61 60 61 64 64 65 66 64 62 60 62 64 67 70 69 RH 93 72 61 63 76 97100100100 93 79 76 81100100100100100 90 87 90 Wind dir NE E SE SE SE SE S N N N NE E E E E E SE SE SE SE SE Wind spd 4 8 10 9 6 4 2 1 1 3 4 4 4 5 8 11 13 17 17 14 13 Wind gust 28 25 Clouds SC SC B1 B1 B2 OV B2 OV OV B2 OV B2 B1 B2 B2 OV OV B2 B2 B2 B1 PoP 12hr 10 40 10 90 90 QPF 12hr 0 0 0 0.70 0.75 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S D D D D L L L Tstms S C C S S C C Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 60 69 55 65 53 66 51 70 Temp 64 60 66 66 58 55 63 63 56 54 63 64 54 52 67 66 Dewpt 64 60 63 62 58 55 58 59 56 53 56 58 54 52 57 60 PWind dir NE N NE NE NE NE E SE Wind char GN GN GN GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 70 30 10 50 40 30 10 10 Rain shwrs L C S C C C C C C S Tstms C S $$ IAZ035-162100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 71 61 77 63 81 Temp 54 62 67 70 69 64 64 64 63 67 71 74 73 67 66 65 64 68 75 80 77 Dewpt 52 55 59 62 64 64 64 64 63 67 69 70 69 67 66 65 64 68 72 75 74 RH 93 78 75 76 84100100100100100 93 87 87100100100100100 90 85 90 Wind dir NE E E SE SE SE S W N N NE E E E E E SE SE S S S Wind spd 5 8 8 5 4 2 1 1 0 2 2 2 2 3 4 8 10 13 14 13 12 Clouds B1 B1 B1 B1 B2 OV OV OV OV B2 B2 OV B1 B1 OV OV OV B2 B1 B1 B1 PoP 12hr 20 30 30 70 70 QPF 12hr 0 0 0 0.38 0.45 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C S C S L L L L L L D Tstms S S S S C S S C C Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 76 58 69 56 69 54 72 Temp 69 65 72 70 61 59 64 66 59 56 65 65 57 54 67 67 Dewpt 69 65 68 66 61 59 62 62 59 56 60 60 57 54 60 61 PWind dir S NW NE NE NE NE NE SE Wind char GN LT LT LT LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 OV B2 B2 B2 OV B2 SC SC B1 B1 PoP 12hr 80 40 30 60 40 30 20 20 Rain shwrs D L C C C C L C C C C C S S Tstms C S S S C S $$ IAZ094-162100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 74 66 81 67 84 Temp 62 64 67 71 74 70 69 68 66 71 77 77 77 72 70 69 67 73 80 82 80 Dewpt 61 63 67 70 72 70 69 68 66 71 74 75 74 72 70 69 67 72 76 77 76 RH 97 97100 97 93100100100100100 90 94 90100100100100 97 88 85 88 Wind dir NE E E E E E E SE N NE E E NE E E E SE SE S S S Wind spd 8 5 5 4 3 4 3 3 2 3 3 3 4 5 5 6 8 9 11 12 9 Wind gust 19 Clouds OV OV B2 B2 B1 B1 B2 B2 OV B2 B1 B1 SC SC B2 B1 B1 SC FW FW SC PoP 12hr 80 60 40 20 10 QPF 12hr 0.35 0.10 0.28 0.03 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L D C C S C L C C C S S Tstms C S S S C C C S S S Heat index 86 91 Max heat 88 93 Flood A A Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 81 64 72 61 69 58 70 Temp 73 69 79 76 68 65 69 69 64 61 66 66 60 58 67 66 Dewpt 71 68 73 73 67 65 68 68 63 61 64 65 60 58 63 64 PWind dir S SW N N N N NE E Wind char GN GN LT LT LT LT LT LT Avg clouds SC B1 B2 B1 B1 B2 OV B2 B2 B2 B2 B1 SC SC B1 SC PoP 12hr 60 40 70 60 40 20 20 20 Rain shwrs L C C L L L L C C S S S S S Tstms C C S C C C C S $$ IAZ017-162100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 71 59 74 59 73 Temp 51 62 68 71 67 62 61 61 60 65 71 73 71 64 62 61 60 64 69 72 71 Dewpt 49 54 56 58 61 62 61 61 60 65 65 65 65 64 62 61 60 64 65 68 68 RH 93 75 65 63 81100100100100100 81 76 81100100100100100 87 87 90 Wind dir NE E E SE SE SE S NE N NE NE NE NE E E E SE SE SE SE SE Wind spd 4 8 9 8 4 3 1 1 0 2 3 2 3 3 4 6 11 14 17 14 14 Wind gust 27 26 25 Clouds B1 SC SC B1 B2 B2 OV B2 OV B2 OV B2 B1 B2 B2 OV OV B2 B2 B2 B2 PoP 12hr 10 30 10 70 90 QPF 12hr 0 0 0 0.35 0.78 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C L L D D D D D Tstms S C S S C L Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 72 55 66 53 66 52 69 Temp 66 62 69 68 59 57 63 64 56 54 63 63 55 53 67 65 Dewpt 66 62 66 63 59 57 58 58 56 54 57 57 55 53 57 58 PWind dir S N NE NE E NE NE SE Wind char GN GN GN GN LT LT LT LT Avg clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B1 B1 B1 B1 PoP 12hr 90 40 30 50 40 40 20 20 Rain shwrs D L C C C S C C C C C C S S S S Tstms L C S S S S $$ IAZ049-162100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 71 62 78 63 81 Temp 57 63 65 67 71 65 64 64 63 68 70 74 76 67 66 65 63 67 73 79 77 Dewpt 54 56 60 63 64 65 64 64 63 68 69 69 68 67 66 65 63 67 70 73 72 RH 90 78 84 87 79100100100100100 97 84 76100100100100100 90 82 85 Wind dir NE E E SE E SE SE SE NE N NE NE NE E E E E SE SE S SE Wind spd 6 6 6 5 4 3 2 1 1 2 2 3 3 3 4 5 9 11 13 12 13 Clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 OV OV B2 B1 B1 B2 B2 B2 B2 B1 SC SC PoP 12hr 20 50 30 50 60 QPF 12hr 0.09 0.13 0.01 0.17 0.18 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C C C C C L L C C L Tstms S S S C S S S S C S S S C Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 80 60 71 57 70 55 72 Temp 69 66 74 74 63 60 64 67 59 57 63 66 57 55 65 67 Dewpt 69 66 70 67 63 60 61 61 59 57 59 59 57 55 59 59 PWind dir S W NE NE NE N NE E Wind char GN GN LT GN LT LT LT LT Avg clouds B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 SC SC SC B1 PoP 12hr 90 50 40 60 50 30 20 20 Rain shwrs L D C C C C C L C C C S S S S Tstms C C S S C C C S S $$ IAZ086-162100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 607 AM CDT Wed Sep 16 2026 Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 66 80 67 84 Temp 62 65 66 70 75 70 69 68 67 72 74 76 79 72 70 69 68 73 76 80 82 Dewpt 61 63 65 69 72 70 69 68 67 72 74 75 75 72 70 69 68 72 76 78 77 RH 97 93 97 97 90100100100100100100 97 88100100100100 97100 94 85 Wind dir NE E E E E E SE E SE SW N NE NE NE E E E SE SE S S Wind spd 6 6 4 3 3 3 2 2 2 3 2 3 3 4 4 5 8 10 10 10 9 Clouds B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B1 B1 B1 B1 B2 B1 B2 B1 SC FW FW PoP 12hr 60 70 60 30 40 QPF 12hr 0.25 0.36 0.08 0.09 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C C C C C L L C L C C C C Tstms S S C C C C S S S S S Heat index 87 90 Max heat 91 Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 84 65 74 61 71 58 72 Temp 73 70 78 79 68 65 69 72 64 62 67 69 62 59 67 69 Dewpt 72 70 75 75 68 65 68 69 64 61 65 66 61 58 64 65 PWind dir S SW N NE NE N NE NE Wind char GN GN LT LT LT LT LT LT Avg clouds FW B1 B2 B1 B1 B2 OV B2 B2 B2 B2 B2 SC SC SC B1 PoP 12hr 60 60 60 60 50 30 20 20 Rain shwrs L L C L L L L C C C C S S S Tstms C C S C C S C $$