Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
231 FOUS53 KDMX 132037 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 337 PM CDT Thu Aug 13 2026 IAZ060-140900- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 87 72 89 70 Temp 82 80 74 73 72 70 76 83 87 85 79 77 75 73 80 86 89 86 78 75 73 71 Dewpt 75 76 73 72 71 70 73 75 77 77 75 74 73 73 76 77 77 77 76 74 73 71 RH 79 88 97 97 97100 90 77 72 77 88 90 94100 88 75 68 75 94 97100100 Wind dir E E NE E E E E SE SE E E SE SW SW W W NW NW NW NW NW NW Wind spd 8 12 13 11 11 10 10 11 10 10 10 8 6 5 5 6 6 4 3 2 3 3 Clouds B1 B1 B2 B2 OV B2 B2 B2 B2 B1 B2 OV B2 B2 B1 B1 SC B1 B1 B1 B2 B2 PoP 12hr 60 60 60 10 70 QPF 12hr 0.59 0.06 0.34 0 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C L S S C S L C C L L C Tstms C C C C C S S C S C C C C C C Heat index 89 86 90 99 96 86 97101 98 Max heat 90 91 102 96 99 103 95 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 64 81 63 85 68 82 64 80 Temp 80 77 69 66 79 78 68 64 82 82 72 69 80 78 69 66 78 77 Dewpt 73 71 67 65 67 68 66 64 70 72 69 68 71 71 68 65 69 69 PWind dir N N N SE S S E NE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC SC SC SC FW SC SC SC B1 B2 B1 B1 B1 B2 B1 B1 PoP 12hr 50 5 0 5 20 50 30 20 10 Rain shwrs C C S C C C S Tstms C C S C C S S $$ IAZ039-140900- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 79 69 84 68 Temp 72 71 69 69 68 66 70 76 79 77 73 73 71 70 76 81 84 81 75 73 70 69 Dewpt 70 69 68 67 67 66 69 72 74 72 72 71 71 70 74 77 77 75 73 72 70 69 RH 93 93 97 93 97100 97 87 85 85 97 93100100 94 88 80 82 94 97100100 Wind dir E E E E E E E E E E E E SE SE W W NW NW NW NW NW NW Wind spd 10 12 11 9 11 12 13 12 12 12 13 12 10 5 6 6 8 5 3 2 3 4 Clouds B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 OV OV OV OV B1 B1 B1 B1 B1 B1 B2 PoP 12hr 90 70 80 30 50 QPF 12hr 1.02 0.27 1.04 0.01 0.14 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L D D L L C C C C L D C C C S S C C C Tstms C L C C S S S C C C C C S S S S S C S Heat index 89 95 88 Max heat 90 97 85 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 62 79 61 79 65 79 61 77 Temp 78 76 68 63 77 76 66 62 77 75 70 67 76 74 66 63 74 73 Dewpt 72 68 65 63 66 66 64 62 69 70 67 66 70 68 65 62 67 66 PWind dir NW NW NW SW SW SW NW NE E Wind char GN LT LT LT LT LT LT LT LT Avg clouds B2 SC FW FW SC FW FW SC B1 SC B1 B2 B2 B1 SC SC B1 SC PoP 12hr 40 0 0 5 30 60 30 20 20 Rain shwrs C S C L L C S S S Tstms S S S C C C S S S $$ IAZ048-140900- Ames-Story IA 41.99N 93.62W Elev. 936 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 84 70 87 68 Temp 77 75 71 70 69 68 74 79 83 82 76 74 73 71 79 84 87 84 76 73 71 69 Dewpt 73 73 71 70 69 68 72 75 77 76 75 74 73 71 75 78 78 77 75 73 71 69 RH 87 94100100100100 93 88 82 82 97100100100 88 82 75 80 97100100100 Wind dir E E NE E E E E SE SE E E SE SE SW W W NW NW NW NW NW NW Wind spd 8 12 11 10 10 10 11 11 11 10 10 6 5 4 5 6 5 3 2 1 2 3 Clouds B2 B2 OV B2 B2 OV B2 OV B2 B2 OV OV OV B2 B1 B1 B1 B1 B1 B2 B2 B2 PoP 12hr 80 70 70 20 70 QPF 12hr 0.95 0.04 0.86 0 0.18 Snow 12hr 00-00 00-00 00-00 Rain shwrs C L D L L L C C C C C L S S C C L L C Tstms C L L C C C S S C C C C S C C C C C Heat index 92 89 95 99 93 Max heat 95 88 95 101 88 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 62 80 62 82 66 81 62 79 Temp 79 77 68 64 78 77 66 63 80 79 70 67 78 76 67 64 76 75 Dewpt 73 71 67 63 68 68 66 63 71 72 69 67 72 71 67 64 69 69 PWind dir N N NW SE S S N NE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC FW SC FW FW SC B1 SC B1 B2 B1 B1 B1 B2 B1 B1 PoP 12hr 40 0 0 5 30 50 30 20 20 Rain shwrs C S C C C C S S Tstms C S S C C S S S $$ IAZ004-140900- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 75 66 80 64 Temp 71 71 66 65 64 63 68 71 73 73 71 70 68 67 73 77 80 78 71 69 67 65 Dewpt 66 69 66 65 64 63 67 70 72 73 71 70 68 67 71 73 74 75 71 68 66 65 RH 84 93100100100100 97 97 97100100100100100 93 87 82 91100 97 97100 Wind dir E E E E E E E SE E E E SE E N NW NW W NW W NW NW N Wind spd 12 13 12 11 12 12 14 13 11 10 9 5 4 3 4 4 5 4 3 4 5 8 Clouds B2 B2 B1 B2 B2 OV OV OV OV OV OV B2 OV B2 B2 B2 B1 B2 B1 B1 B1 B1 PoP 12hr 50 70 60 20 30 QPF 12hr 0.12 0.31 0.26 0 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C L C L C C L C C S S C C C C Tstms S S S S S S S C C S S S S Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 57 77 60 78 61 75 57 75 Temp 74 73 62 58 75 75 63 61 75 75 66 63 73 73 62 59 73 73 Dewpt 68 67 60 57 64 67 62 61 70 72 66 63 68 68 62 59 67 68 PWind dir N NW SW SW SW SW N N S Wind char GN LT LT LT GN LT GN LT LT Avg clouds B1 SC FW FW SC FW FW SC B1 B1 B1 B1 B2 B1 SC SC B1 SC PoP 12hr 10 0 20 30 40 50 30 20 20 Rain shwrs S S C C C C C C S S S Tstms S S S C C C S S S $$ IAZ035-140900- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 80 68 84 66 Temp 73 73 68 67 67 67 71 75 79 78 73 72 71 70 76 82 84 81 73 72 69 67 Dewpt 71 72 68 67 67 67 70 74 76 76 73 72 71 70 74 77 77 76 73 71 69 67 RH 93 97100100100100 97 97 91 94100100100100 94 85 80 85100 97100100 Wind dir E E E E E E E E SE E E SE SE W NW NW NW NW NW NW NW NW Wind spd 10 10 10 9 10 10 11 11 9 9 8 5 3 2 3 3 3 2 1 1 2 3 Clouds OV B2 B2 B2 OV OV OV OV OV B2 OV B2 OV OV B2 B2 B1 B1 B1 B1 B2 B2 PoP 12hr 80 80 60 20 60 QPF 12hr 0.56 0.37 0.37 0 0.12 Snow 12hr 00-00 00-00 00-00 Rain shwrs C D L C C L C L L C C L S S C C L L S Tstms C L L C C S S S C C C S S S C S S S S Heat index 90 94 88 Max heat 87 91 95 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 80 59 80 60 81 63 79 60 78 Temp 77 75 65 61 77 76 64 61 78 77 68 65 76 75 64 61 76 74 Dewpt 72 70 64 61 67 68 64 61 72 73 67 65 72 71 64 61 69 70 PWind dir N NW W S SW S N NE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 SC FW FW SC FW FW SC B1 B1 B2 B1 B2 B1 B1 B1 B2 B1 PoP 12hr 20 0 0 20 40 60 30 20 20 Rain shwrs S S S C L C C S S Tstms S S C C C S S $$ IAZ094-140900- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 91 73 90 70 Temp 91 89 82 78 75 73 82 88 90 89 82 79 76 74 82 87 90 88 80 76 73 71 Dewpt 76 75 74 73 71 70 72 73 73 73 74 73 71 70 73 73 73 73 74 74 73 71 RH 62 64 77 85 87 90 72 61 58 59 77 82 85 87 74 63 58 61 82 94100100 Wind dir SE E E E E E E SE S SE SE S S SW W W W NW N N N N Wind spd 8 9 10 9 8 8 9 10 10 8 9 8 8 6 6 8 8 4 3 4 5 5 Clouds FW SC SC B1 B1 B1 B1 SC SC B2 B2 B2 OV B1 B1 B1 SC B1 B1 B1 B2 B2 PoP 12hr 30 40 40 10 60 QPF 12hr 0.06 0.12 0.02 0 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S C S S C S S L L C Tstms S C C C S S S S C S S C C C Heat index 102100 88 95 99 97 87 87 94 98 95 Max heat 103 99 97 101 95 97 99 94 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 65 81 64 86 69 85 66 82 Temp 82 77 69 67 79 79 69 65 83 84 74 71 83 81 71 67 80 79 Dewpt 73 71 69 66 67 67 66 65 69 69 69 67 70 70 69 65 67 67 PWind dir N N N SE S SE SE NE NE Wind char LT LT LT LT LT LT GN LT LT Avg clouds B2 B1 B1 SC SC SC SC SC SC SC SC B2 B2 B1 SC B1 B1 B1 PoP 12hr 50 10 0 5 5 30 20 20 10 Rain shwrs C C C C S S S Tstms C C S C S S S $$ IAZ017-140900- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 62 76 66 82 65 Temp 71 70 67 65 65 65 68 73 74 74 71 71 69 67 74 79 81 79 72 70 68 66 Dewpt 68 68 67 65 65 65 68 71 72 72 71 71 69 67 73 75 75 74 72 70 68 66 RH 90 93100100100100100 93 93 93100100100100 97 88 82 85100100100100 Wind dir E E E E E E E E E SE E SE E E NW NW NW NW W NW NW NW Wind spd 10 12 10 9 11 11 13 13 12 11 12 9 6 4 4 4 4 4 2 2 3 5 Wind gust 24 23 Clouds B2 B1 B1 B1 B2 OV B2 OV B2 OV OV OV OV OV B2 B2 B1 B1 B1 B1 B2 B1 PoP 12hr 60 80 80 20 30 QPF 12hr 0.18 0.29 0.65 0.01 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C L L L C L D L L C S S S S C C C C S Tstms C C C S S S S S C C C C S S S S Heat index 87 Max heat 87 Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 78 58 78 59 78 62 77 58 76 Temp 76 75 64 61 76 75 63 60 76 75 67 64 74 73 63 60 73 73 Dewpt 70 67 62 60 65 66 62 60 70 71 67 64 69 67 63 60 66 67 PWind dir NW NW W SW SW SW NW NE S Wind char GN LT LT LT LT LT LT LT LT Avg clouds B1 SC FW FW SC FW FW B1 B1 B1 B2 B1 B2 B1 SC SC B1 B1 PoP 12hr 20 0 0 20 40 60 30 20 20 Rain shwrs S S C C L L C S S S Tstms S S C C S S S $$ IAZ049-140900- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 82 69 86 67 Temp 74 71 68 68 68 67 72 77 81 79 74 73 72 72 77 83 86 82 74 72 70 68 Dewpt 71 70 68 68 68 67 70 73 75 73 72 72 71 71 75 77 78 75 73 72 70 68 RH 90 97100100100100 93 87 82 82 93 97 97 97 94 82 77 79 97100100100 Wind dir E E E E E E E E SE E E SE SE S W W NW W NW NW NW NW Wind spd 9 12 11 9 10 10 11 11 11 12 12 9 8 5 5 5 5 4 2 2 3 3 Clouds B1 B1 OV B2 B2 B2 OV B2 OV B2 OV OV OV B2 B2 B2 B1 B1 B1 B1 B2 B2 PoP 12hr 90 70 80 10 60 QPF 12hr 0.61 0.08 0.58 0 0.13 Snow 12hr 00-00 00-00 00-00 Rain shwrs L L D L L L L S C C C D S S S S S L L C Tstms C L L C C C S S C C C C S S S S S S C C Heat index 87 92 97 89 Max heat 92 95 101 85 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 61 80 60 82 64 81 60 78 Temp 78 76 66 63 78 75 65 61 79 78 69 66 78 75 65 62 76 73 Dewpt 72 69 65 62 66 67 63 61 69 70 67 66 70 69 65 62 67 67 PWind dir N NW NW S S SW NW NE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 SC FW SC FW FW SC SC SC B1 B2 B2 B1 SC B1 B1 B1 PoP 12hr 50 0 0 5 30 50 30 20 20 Rain shwrs C S C C C C S S Tstms C S S C C C S S $$ IAZ086-140900- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 337 PM CDT Thu Aug 13 2026 Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun CDT 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 89 73 90 71 Temp 83 81 74 73 71 71 78 84 88 86 78 77 75 74 81 87 90 86 78 76 73 72 Dewpt 75 76 74 73 71 71 75 76 77 77 76 75 74 73 76 77 78 77 76 75 73 72 RH 77 85100100100100 91 77 70 75 94 94 97 97 85 72 68 75 94 97100100 Wind dir SE E E E E E SE SE E NE E SE S S W W W NW NW NW NW NW Wind spd 9 11 12 10 10 10 9 10 10 10 10 9 8 8 9 9 9 5 3 3 3 3 Clouds SC B1 B1 B2 B2 B2 B2 SC B1 B1 B1 B2 B2 OV B1 B1 SC SC B1 B1 B2 B2 PoP 12hr 70 30 50 20 60 QPF 12hr 0.55 0.04 0.17 0 0.04 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C S S C C C C S S S S L L C Tstms C C C C C S S S C C S S S S C C C Heat index 90 88 94101 98 87 99104 98 Max heat 92 96 103 95 100 105 95 Flood A A A A A A A A A A A A A A Date 08/16 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 CDT 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 65 83 64 86 69 86 65 82 Temp 82 79 69 67 80 80 68 65 83 83 73 70 83 80 70 67 80 79 Dewpt 75 73 69 67 68 68 67 64 70 71 69 69 71 71 69 66 68 69 PWind dir NW N N SE S S SE NE NE Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 B1 B1 SC SC SC FW FW SC SC SC B2 B2 SC B1 B1 B1 B1 PoP 12hr 40 10 0 0 5 40 20 20 20 Rain shwrs C C S C S S S S Tstms C C S S S S S S $$