OSPO converts the product into HDF-EOS and WMO BUFR formats and distributed to users. NOAA/NESDIS gets the product through an interagency program referred to as the Shared Processing Program in which NOAA, the US Air Force and US Navy participate. This product is generated initially by the Fleet Numerical Meteorology and Oceanography Center (FNMOC). Many commercial weather pages (Intellicast,, Weather Underground, etc.). The product is updated once per day at 4 am EST. This data exercise has students look up precipitation ground data and. The water vapor varies from 0 to 80 with accuracy of 0.1 kg/m^2. The water vapor is derived from the passive microwave sensor SSM/I, which has 7 channels of 19 GHz (H, V), 22 GHz (V), 37 GHz (H, V), and 85 GHz (H, V), where H is the horizontal polarization, V is the vertical polarization. It is derived from SSM/I channels 19V, 19H, 22V, 37V, and 85V on an orbital basis.Īlso referred to as Water Vapor, this product shows the total atmospheric moisture over oceans.

This product shows the rainfall intensity (mm/hr) over the Earth's surface. The products are available at both pixel and grid levels. The NESDIS operational IWP product is derived from AMSU-B/MHS 89 and 150 GHz channel measurements on board POES and Metop satellites, and is expressed in mm or kg/m2.

Cloud ice water plays an important role in the transport of energy (latent heat) in the earth-atmosphere system. It varies greatly from cloud to cloud and also depends on the cloud ice phase (cloud ice, hail, grauple, ice crystal). Ice Water Path is the integrated column amount of ice water in the cloud. The operational global HE products available include instantaneous rain rates and 1-hour, 3-hour, 6-hour, 24-hour and multi-day precipitation accumulations. Recently the HE has been extended to the entire globe equator-ward of 60 degrees to meet user community's need for support of global flash flood guidance efforts. The Hydro-Estimator (HE) algorithm uses infrared (IR) brightness temperatures to identify regions of rainfall and retrieve rainfall rate, while using National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) model fields to account for the effects of moisture availability, evaporation, orographic modulation, and thermodynamic profile effects.

An eTRaP will be produced, centered on the synoptic hours (e.g., 00Z, 06Z, 12Z, 18Z), from single-orbit TRaP segments with start times up to 3 hours after the synoptic hour. Each eTRaP is made up of forecast using observations from potentially several microwave sensores-currently AMSU, SSMI and AMSRE-initiailized at several observation times, and possibly using several different track forecasts. The eTRaP provides deterministic and probabilistic forecasts for each of four 6h time periods (e.g., 00-06h, 06-12h, 12-18h, 18-24h) as well as the 24 hour cumulative time period. The eTRaP is a simple ensemble whose members are the 6-hourly totals from the single-orbit TRaPs. Listed below are some precipiation totals courtesy the National Weather Service.Operational Products Ensemble Tropical Rainfall Potential (eTRaP) Map below created by Grand Forks National Weather Service using HIDEN rain gauge network. Total Rainfall from Radar-based Estimates - May 11 and 12 The data are provided by the WSI Corporation's ( ) analysis of National Weather Service radar imagery. The image below provides a daily estimate of precipitation values for the period 7:00 AM, Tuesday - May 11 through 7:00 AM, Wednesday - May 12. Heavy snow also fell during the day on May 12th in central North Dakota. Farther to the north, portions of southern Manitoba in Canada received up to 10 inches of snow along with roads closed near Winnipeg and numerous school closings. Pembina just across the border of Minnesota near the Canadian border saw 4 inches of snow. 2.5 inches of snow was reported 4 miles west of Warroad along with thundersnow. Roseau picked up 4.26 inches of rain and also a half inch of snow. Some township roads were reported to be covered with water in Rollis Township in eastern Marshall County.Īlong with the rain came some wintertime precipitation as well. Ditches were reported to be full and starting to overflow. Areal flood warnings continued through the day on the 12th for Roseau and Marshall Counties. 4.48 inches fell at Warroad, Argyle saw 4.26 inches and Roosevelt in Lake of the Woods County saw 4.20 inches. Wannaska wasn't far behind with 5.30 inches. The most rainfall reported as of 11am Wednesday May 12 was 5.37 inches in Lake township to the west of Warroad. Many places north and west of a line from Grand Forks to Bemidji and International Falls saw 2 to 4 inches of rain. Heavy Rains and Snow in Northwest Minnesota:Ī large area of low pressure brought heavy rains over northwest Minnesota on May 11th and through the early morning hours of May 12th.

Intellicast precipitation totals