NBM Card 3.2

The NBM text bulletins take data from the gridded NBM forecasts and generate data for weather stations from the closest usable grid point. (Note that these products are NOT calibrated to ground station observations, which is different from the MOS text bulletins.) Bulletins are available for over 6,000 land and marine stations in the CONUS, Alaska, Hawaii, Puerto Rico, Guam, and Oceanic-domains. Not all elements may be available for all stations. All regions (including both land and marine stations) are included in the same product.

There are five NBM text bulletins, which cover different time scales and different elements. The products are as follows:

Product Name Product Type Time step Forecast Hours covered
NBH Hourly 1-Hourly Hours 1-25
NBS Short 3-Hourly Hours 6-72*
NBE Extended 12-Hourly Hours 24-192*
NBX Super-Extended 12-Hourly Hours 204-264* (continuation of NBE)
NBP Probabilistic (Extended period) 12-Hourly Hours 24-228*

(*Actual forecast hours change according to cycle. Listed times are for 00Z and 12Z cycles.)

The bulletins consist of the following:

  • The first line always consists of: the station call(short name), bulletin name, forecast date, and forecast cycle.
  • The following 2-3 lines show the forecast valid date/time and/or model forecast hour. All forecast dates and times are listed in UTC time.
  • The lines following the date/time consist of various weather elements. These elements vary by bulletin type, region, and sometimes cycle. 
  • Large values: any value which would be printed as >998 will be printed as 998**
  • Missing Data:

     For all Elements, a value of 999 indicates missing data**. If data are missing for all forecast hours, the line for that element will not be printed.

         (**Except for Mean Sea Level Pressure (MSLP). Missing MSLP values are noted as -99.)

 

Example bulletins for each of the types (NBH,NBS,NBE,NBX,NBP) are listed below. At the bottom of the page, additional stations from different locations are displayed to show expected data at different regions (and at land vs. marine stations).

Changes from NBM v3.1 Text Bulletins

Users should take note of the following changes from the NBM v3.1 products:

  • New elements have been added. New elements are listed in bold and marked with an asterisk (*).
  • Some elements have changed format and/or are included in additional domains than in NBM v3.1. Please read the key for current data format.
  • The order of the elements have changed to make the products more consistent. Elements whose relative order have changed are marked with a double asterisk (**). 
  • The number of spaces in the element names for NBE has increased from 3 to 5 characters (to match NBP) and the total length of NBE has increased by 2 characters (from 70 to 72 characters)
  • The length of NBS has increased from 66 hours (69 characters) to 72 hours (74 characters)
  • NBX no longer prints data after 264 hours (blank characters instead of printing all missing values)

NBS Example and Element Key

NBS Example Bulletin (CONUS, land station)

Date/time lines

  • DT (or blank) = forcast valid date (in UTC)
  • UTC = forcast valid hour (in UTC)
  • FHR = model forecast hour (number of hours forward from forecast date/cycle)

Elements

  • X / N (or N/X) = 18-hour max / min (or min / max) temperature, degrees F. Min is between 00Z-18Z and recorded as 12Z; Max is between 12Z(current day)-06Z(next day) and recorded as 00Z(following day).
  • TMP = temperature, degrees F
  • DPT = dew point temperature, degrees F
  • SKY = sky cover, percent
  • WDR = wind direction, nearest tens degrees (northerly=36; easterly=9; calm=00)
  • WSP = wind speed, knots (<0.5 knots will be listed as 0 (calm))
  • GST = wind gust, knots
  • P06 = 6-hour PoP, percent
  • P12 = 12-hour PoP, percent
  • Q06 = 6-hour QPF, 1/100 inches 
  • Q12 = 12-hour QPF, 1/100 inches 
  • DUR* = Duration of precipitation, hours
  • T03 = 3-hour thunderstorm probability, percent
  • T12 = 12-hour thunderstorm probability, percent
  • PZR = conditional probability of freezing rain, percent
  • PSN = conditional probability of snow, percent
  • PPL = conditional probability of sleet / ice pellets, percent
  • PRA = conditional probability of rain, percent
  • S06 = 6-hour snow amount, 1/10 inches
  • SLV = snow level, 100s feet MSL
  • I06 = 6-hour ice amount, 1/100 inches
  • CIG = ceiling height, 100s feet (>5000 ft reported to the nearest 1000 ft; 888=unlimited)
  • VIS = visibility, 1/10th miles (rounded to nearest mile for values >= 1 mile) [Note: values before approx. 2019-06-01 are in full miles]
  • LCB = lowest cloud base, 100s feet (>5000 ft reported to the nearest 1000 ft)
  • MHT* = mixing height, 100s feet MSL
  • TWD* = transport wind direction, nearest tens degrees (northerly=36; easterly=9; calm=00)
  • TWS* = transport wind speed, knots (<0.5 knots will be listed as 0 (calm))
  • HID* = Haines Index (unitless)
  • SOL* = solar radiation, W/m2 (to nearest 10).
  • SWH = significant wave height, feet (marine and some near-water stations only)

(For additional information about NBM weather elements, see the Element Key)

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NBH Example and Element Key

NBH Example Bulletin (CONUS, land station)

Date/time lines

  • UTC = forcast valid hour (in UTC) (date as in line 1, unless past 23Z - then the following date is valid)

Elements

  • TMP = temperature, degrees F
  • DPT = dew point temperature, degrees F
  • SKY = sky cover, percent
  • WDR = wind direction, nearest tens degrees (northerly=36; easterly=9; calm=00)
  • WSP = wind speed, knots 
    • WARNING: Due to a bug, when wind speed is under 0.5 knots, wind speed is printed as ' NG'
  • GST = wind gust, knots 
    • WARNING: Due to a bug, when wind speed is under 0.5 knots, wind gust is not printed.
  • P01 = 1-hour PoP, percent
  • P06 = 6-hour PoP, percent
  • Q01** = 1-hour QPF, 1/100 inches
  • DUR* = Duration of precipitation, hours
  • T01** = 1-hour thunderstorm probability, percent
  • PZR = conditional probability of freezing rain, percent
  • PSN = conditional probability of snow, percent
  • PPL = conditional probability of sleet / ice pellets, percent
  • PRA = conditional probability of rain, percent
  • S01 = 1-hour snow amount, 1/10 inches
  • SLV* = snow level, 100s feet MSL
  • I01 = 1-hour ice amount, 1/100 inches
  • CIG = ceiling height, 100s feet  (>5000 ft reported to the nearest 1000 ft; 888=unlimited)
  • VIS = visibility, 1/10th miles (rounded to nearest mile for values >= 1 mile) [Note: values before approx. 2019-06-01 are in full miles]
  • LCB = lowest cloud base, 100s feet (>5000 ft reported to the nearest 1000 ft)
  • MHT* = mixing height, 100s feet MSL
  • TWD* = transport wind direction, nearest tens degrees (northerly=36; easterly=9; calm=00)
  • TWS* = transport wind speed, knots (<0.5 knots will be listed as 0 (calm))
  • HID* = Haines Index (unitless)
  • SOL* = solar radiation, W/m2 (to nearest 10).

(For additional information about NBM weather elements, see the Element Key)

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NBE Example and Element Key

NBE Example Bulletin (CONUS, land station)

Date/time lines

  • (second line) = forcast valid dates (in UTC)
  • UTC = forcast valid hour (in UTC)
  • FHR = model forecast hour (number of hours forward from forecast date/cycle)

Elements

  • X / N (or N/X) = 18-hour max / min (or min / max) temperature, degrees F. Min is between 00Z-18Z and recorded as 12Z; Max is between 12Z(current day)-06Z(next day) and recorded as 00Z(following day).
  • TMP = temperature, degrees F
  • DPT = dew point temperature, degrees F
  • SKY = sky cover, percent
  • WDR = wind direction, nearest tens degrees (northerly=36; easterly=9; calm=00)
  • WSP = wind speed, knots (<0.5 knots will be listed as 0 (calm))
  • GST = wind gust, knots
  • P12 = 12-hour PoP, percent
  • Q12 = 12-hour QPF, 1/100 inches
  • Q24 = 24-hour QPF, 1/100 inches
  • DUR* = Duration of precipitation, hours
  • T12 = 12-hour thunderstorm probability, percent
  • PZR = conditional probability of freezing rain, percent
  • PSN = conditional probability of snow, percent
  • PPL = conditional probability of sleet / ice pellets, percent
  • PRA = conditional probability of rain, percent
  • S12 = 12-hour snow amount, 1/10 inches
  • SLV = snow level, 100s feet MSL
  • I12 = 12-hour ice amount, 1/100 inches
  • S24 = 24-hour snow amount, 1/10 inches
  • SOL* = solar radiation, W/m2 (to nearest 10).
  • SWH = significant wave height, feet (marine and some near-water stations only)

(For additional information about NBM weather elements, see the Element Key)

CLIMO

For 00Z and 12Z cycles, Max/Min Temperature and 12-hour PoP, a reference climatology is displayed. These numbers are the climatological normal max and min temperature for the given date, based on the 1971-2000 NCDC data. For PoP12, the CLIMO displays the normal observed relative frequencies of 0.01 inches or more of precipitation during the 96-108 and 108-120h (00z) or 84-96 and 96-108 h (12Z) periods. The technique generating these climatologies is the same as for MEX bulletins, and detailed information can be found in MDL TPB 05-07. These numbers are the same for both NBE and NBX of a given date. 

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NBX Example and Element Key

NBX Example Bulletin (CONUS, land station)

Date/time lines

  • (second line) = forcast valid dates (in UTC)
  • UTC = forcast valid hour (in UTC)
  • FHR = model forecast hour (number of hours forward from forecast date/cycle)

Elements

  • X / N (or N/X) = 18-hour max / min (or min / max) temperature, degrees F. Min is between 00Z-18Z and recorded as 12Z; Max is between 12Z(current day)-06Z(next day) and recorded as 00Z(following day).
  • TMP = temperature, degrees F
  • DPT = dew point temperature, degrees F
  • SKY = sky cover, percent
  • WDR = wind direction, nearest tens degrees (northerly=36; easterly=9; calm=00)
  • WSP = wind speed, knots (<0.5 knots will be listed as 0 (calm))
  • GST = wind gust, knots
  • P12 = 12-hour PoP, percent
  • Q12 = 12-hour QPF, 1/100 inches
  • Q24 = 24-hour QPF, 1/100 inches
  • DUR* = Duration of precipitation, hours
  • PZR = conditional probability of freezing rain, percent
  • PSN = conditional probability of snow, percent
  • PPL = conditional probability of sleet / ice pellets, percent
  • PRA = conditional probability of rain, percent
  • S12 = 12-hour snow amount, 1/10 inches
  • SLV = snow level, 100s feet MSL
  • I12 = 12-hour ice amount, 1/100 inches
  • S24 = 24-hour snow amount, 1/10 inches
  • SOL* = solar radiation, W/m2 (to nearest 10).
  • SWH = significant wave height, feet (marine and some near-water stations only)

(For additional information about NBM weather elements, see the Element Key)

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NBP Example and Element Key

New product for NBM v3.2!

NBP Example Bulletin (CONUS, land station)

Note on Data Availability

Data for all elements in NBP is not available for all cycles. All elements are available for 07Z and 19Z., and a majority of elements are available for 00Z,01Z,12Z,and 13Z. All other cycles data is limited. See entries below for more details.

Date/time lines

  • (second line) = forcast valid dates (in UTC)
  • UTC = forcast valid hour (in UTC)
  • FHR = model forecast hour (number of hours forward from forecast date/cycle)

Elements

About Probabilistic Elements

The weather elements for NBP are probabilistic percentiles. For X percentile, there is an X% probability that the weather element will be EQUAL TO or BELOW the value listed (or a (100-X) % chance the value will be above what is listed). So for 10th percentile, there is a 10% chance the value will be at or below the number listed, and a 90% chance it will be above. For additional information about NBM weather elements, see the Element Key

Begin Key

    • WSPP1 = 10th percentile wind speed, knots.
    • WSPP5 = 50th percentile wind speed, knots.
    • WSPP9 = 90th percentile wind speed, knots.
      • Wind data are only available for the following cycles: 00,07,12,19
    • Q12P1 = 10th percentile 12-hour QPF, 1/100 inch.
    • Q12P5 = 50th percentile 12-hour QPF, 1/100 inch.
    • Q12P9 = 90th percentile 12-hour QPF, 1/100 inch.
      • Q12P data is QMD QPF12 for CONUS-domain stations, and dervied 12-hr QPF for oceanic stations where there is no QMD.
      • Q12P data are only available for the following cycles: 00,07,12,19
    • S24P1 = 10th percentile 24-hour snowfall accumulation, 1/10 inch.
    • S24P5 = 50th percentile 24-hour snowfall accumulation, 1/10 inch.
    • S24P9 = 90th percentile 24-hour snowfall accumulation, 1/10 inch.
    • I24P1 = 10th percentile 24-hour flat ice accumulation, 1/100 inch.
    • I24P5 = 50th percentile 24-hour flat ice accumulation, 1/100 inch.
    • I24P9 = 90th percentile 24-hour flat ice accumulation, 1/100 inch.
    • SLPP1 = 10th percentile mean sea level pressure, mb.
    • SLPP5 = 50th percentile mean sea level pressure, mb.
    • SLPP9 = 90th percentile mean sea level pressure, mb.
      • Any SLP value 1000 mb or higher does not show the thousands value. (ex: 1000 mb = 000; 987 mb = 987).
      • SLP data are only available for the following cycles: 00,07,12,19
    • NOTE: Missing SLP values are noted as -99; 999 is a real value for this element.

(For additional information about NBM weather elements, see the Element Key)

NBM