Mesonet Iowa Roadway Weather Information System (RWIS) CONTACTS: General Information: Steve Williams P.O. Box 3000 Boulder CO 80307-3000 Email sfw@ucar.edu 303-497-8164 (voice) 970-491-8293 (fax) Specific Network Information: Dr Raymond Arritt 3010 Agronomy Hall Iowa State University Ames, IA 50010 Ph. 515.294.9870 Daryl Herzmann 3010 Agronomy Hall Iowa State University Ames, IA 50010 Ph. 515.294.5978 1.0 DATA SET OVERVIEW This data set contains 20-min resolution surface meteorological data from the Iowa Roadway Weather Information System (RWIS) network operated by the Iowa Department of Transportation. These stations are located along roads throughout the state of Iowa. This data set covers the time period from 1 May to 27 August 2003. The data are in comma-delimited ASCII format. 2.0 INSTRUMENT DESCRIPTION AND STATION LOCATIONS 2.1 Instrument Description Information on the instrumentation may be found at the Iowa Environmental Mesonet (IEM) web page: http://mesonet.agron.iastate.edu/RWIS/ 2.2 Station Locations RATN,Alton (IA10),42.9900016784668,-96.0800018310547,430,Sioux RSIO,Sioux City (I-29),42.4799995422363,-96.379997253418,364,Woodbury RONA,Onawa (I-29),41.8600006103516,-96.0100021362305,303,Harrison RMIS,Missouri Valley (I-29),41.5400009155273,-95.9199981689453,309,Harrison RCOU,Council Bluffs (I-80),41.2299995422363,-95.8600006103516,268,Pottawattamie RSID,Sidney (I-29/IA 2),40.6800003051758,-95.7799987792969,287,Fremont RSPE,Spencer(US 18),43.1300010681152,-95.0800018310547,452,Clay RSTO,Storm Lake (US 71/IA 3),42.7400016784668,-95.1500015258789,405,Buena Vista RCAR,Carroll (US 30),42.0800018310547,-94.8899993896484,389,Carroll RAVO,Avoca (I-80),41.4900016784668,-95.2799987792969,377,Pottawattamie RRED,Red Oak (US 34/US 71),40.9799995422363,-94.9800033569336,290,Montgomery RADA,Adair (I-80),41.4900016784668,-94.7200012207031,450,Cass RALG,Algona (US 18),43.0800018310547,-94.3899993896484,337,Kossuth RFOD,Fort Dodge (US 20),42.439998626709,-94.1800003051758,286,Webster RJEF,Jefferson (IA 4),42.0499992370605,-94.379997253418,310,Greene RDST,De Soto (I-80/US 169),41.5299987792969,-94.0100021362305,291,Dallas RCRE,Creston (US 34),41.0400009155273,-94.3000030517578,388,Union RHAN,Hanlontown (I-35),43.3899993896484,-93.3399963378906,333,Worth RMCW,Mason City (I-35),43.0299987792969,-93.3399963378906,376,Cerro Gordo RWIL,Williams (I-35),42.5299987792969,-93.5699996948242,325,Hamilton RAME,Ames (I-35),42.0299987792969,-93.5699996948242,313,Story RANK,Ankeny (I-35),41.7599983215332,-93.5699996948242,264,Polk RALT,Altoona (I-80/US 65),41.6599998474121,-93.5199966430664,262,Polk RDES,Des Moines (I-235),41.5900001525879,-93.6100006103516,281,Polk RDSM,Des Moines (I-35),41.5299987792969,-93.7699966430664,224,Polk ROSC,Osceola (I-35),41.0299987792969,-93.7900009155273,334,Clarke RLEO,Leon (I-35/IA 2),40.7299995422363,-93.8399963378906,349,Decatur RMAR,Marshalltown (US 30),42.0200004577637,-92.9599990844727,291,Marshall RGRI,Grinnell (I-80),41.689998626709,-92.7300033569336,281,Poweshiek RPEL,Pella (IA 163),41.3800010681152,-92.870002746582,271,Mahaska RCEN,Enterville (IA 2),40.7299995422363,-93,295,Appanoose RNEW,New Hampton (US 18),43.0699996948242,-92.4599990844727,327,Chickasaw RWAT,Waterloo (US 20),42.4500007629395,-92.3099975585938,269,Black Hawk RURB,Urbana (I-380),42.310001373291,-91.9800033569336,302,Buchanon RWBG,Williamsburg (I-80),41.6800003051758,-92.0100021362305,260,Iowa RSIG,Sigourney (IA 92),41.3300018310547,-92.3099975585938,202,Keokuk ROTT,Ottumwa (US 63),41.0200004577637,-92.4199981689453,196,Wapello RCDR,Cedar Rapids (I-380),41.9799995422363,-91.6699981689453,236,Linn RCID,Cedar Rapids (US 30),41.9300003051758,-91.6800003051758,246,Linn RIOW,Iowa City (I-80),41.6800003051758,-91.5800018310547,250,Johnson RIAC,Iowa City (US 218),41.6300010681152,-91.5899963378906,254,Johnson RMOU,Mount Pleasant (US 218),40.8899993896484,-91.5500030517578,133,Henry RDEC,Decorah (IA 9),43.2400016784668,-91.6900024414062,310,Winneshiek RMAN,Manchester (US 20),42.4300003051758,-91.4400024414062,309,Delaware RTIP,Tipton (I-80),41.6399993896484,-91.129997253418,236,Cedar RBUR,Burlington (US 34),40.810001373291,-91.0899963378906,218,Des Moines RDUB,Dubuque (US 20),42.4799995422363,-90.7300033569336,250,Dubuque RMAQ,Maquoketa (US 61/IA 64),42.0699996948242,-90.6800003051758,251,Jackson RDEW,De Witt (US 30/US 61),41.8300018310547,-90.5699996948242,240,Clinton RDAV,Davenport (I-80/I-280),41.5999984741211,-90.6800003051758,206,Scott 3.0 DATA COLLECTION AND PROCESSING Information on the collection and processing of these data can be found at the Iowa Environmental Mesonet web page: http://mesonet.agron.iastate.edu/RWIS/ UCAR/JOSS conducted no processing or quality control on these data. 4.0 DATA FORMAT AND FILE NAMING 4.1 Data Format The data are in comma-delimited ASCII files by reporting station. RLEO, 2003-05-01 00:00:00+00, 59.0, 58.1, 10.0, 12.0, 1. Station ID (RLEO) 2. UTC Date and time (yyyy-mm-dd hh:mm:ss+00) 3, temperature (deg F) 4. dew point (deg F) 5. wind direction (deg) 6. wind speed (knots) 4.2 File Naming conventions rleo.txt where rleo is the station id. 5.0 DATA REMARKS None. 6.0 REFERENCES http://mesonet.agron.iastate.edu/RWIS/ http://www.weatherview.dot.state.ia.us/