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Department of Commerce · National Oceanic & Atmospheric Administration · National Weather Service

NATIONAL WEATHER SERVICE INSTRUCTION 10-812 October 19, 2007 Operations and Services Aviation Weather Service, NWSPD 10-8 AVIATION WIND AND TEMPERATURE ALOFT FORECASTS

NOTICE: This publication is available at: http://www.nws.noaa.gov/directives/. OPR: W/OS23 (B. McNulty) Type of Issuance: Routine SUMMARY OF REVISIONS: Supersedes NWS Instruction 10-812, Aviation Wind and Temperature Aloft Forecasts, dated September 14, 2004. Changes include minor grammar and format corrections, OPR update, and update of location identifiers for the winds aloft bulletins. Certified by: W/OS23 (K. Johnston)

//SIGNED// ______________________October 5, 2007_____ Dr. James E. Hoke Date Acting Director, Office of Climate, Water, and Weather Services

1

Table of Contents 1. 2. 3. 4. 5. 6.

NWSI 10-812 October 19, 2007 Page

Purpose........................................................................................................................................3 Background..................................................................................................................................3 Forecast Locations.......................................................................................................................3 Forecast Levels............................................................................................................................3 Bulletin Designators....................................................................................................................3 Format.........................................................................................................................................5 6.1 Format for levels 39,000 feet and below..............................................................................5 6.2 Format for 45,000- and 53,000-Foot Levels........................................................................6 7. Delayed Forecasts........................................................................................................................6 Appendices: A. Forecast Locations.................................................................................................................7

2

NWSI 10-812 October 19, 2007 1. Purpose. This instruction provides guidance to NWS offices, outlining preparation and format of wind and temperature aloft forecasts in support of commercial and general aviation. 2. Background. The National Centers for Environmental Prediction (NCEP) produces scheduled wind and temperature aloft forecasts four (4) times daily for specified locations in the Continental United States (CONUS), the Hawaiian Islands, Alaska and coastal waters, and the Pacific Ocean. There is no requirement to issue amendments to the forecasts. 3. Forecast Locations. Forecasts will be issued by NCEP for the locations listed alphabetically by state in Appendix A. Forecasts for intermediate locations may be determined by interpolation. 4. Forecast Levels. Wind and temperature aloft forecasts will be issued for the following levels. All levels are referenced to Mean Sea Level (MSL) and all times are in Coordinated Universal Time which is indicated by Z. Actual Altitude (feet) 3,000 6,000 9,000 12,000

The following actual altitude levels will be added for the Hawaiian and Pacific Ocean forecast bulletin series sites: Actual Altitude (feet) 1,000 1,500 2,000 15,000

Pressure Altitude (feet) 18,000(500hPa) 39,000(200hPa) 24,000(400hPa) 45,000(150hPa) # 30,000(300hPa) 53,000(100hPa)# 34,000(250hPa)

#Available only for selected locations (see Appendix A). Wind forecasts will not be issued for levels within 1,500 feet of a location's elevation. An exception for this is made for the altitudes listed above as extra levels for the Hawaiian and Pacific locations. Temperature forecasts will not be issued for levels within 2,500 feet of a location's elevation. Forecasts for intermediate levels may be determined by interpolation. 5. Bulletin Designators. Wind and temperature aloft forecasts are issued in bulletins identified by the data type designator "FB" in the World Meteorological Organization (WMO) 3

NWSI 10-812 October 19, 2007 heading as follows: a. 3,000- to 39,000-foot forecasts 6-Hour Forecast CONUS AWIPS ID ALASKA AWIPS ID b. FBUS31 KWNO FD1US1 FBAK31 KWNO FD1AK1 12-Hour Forecast FBUS33 KWNO FD3US3 FBAK33 KWNO FD3AK3 24-Hour Forecast FBUS35 KWNO FD5US5 FBAK35 KWNO FD5AK5

45,000- and 53,000-foot forecasts 6-Hour Forecast 12-Hour Forecast FBUS38 KWNO FD9US8 FBAK38 KWNO FD9AK8 24-Hour Forecast FBUS39 KWNO FD0US9 FBAK39 KWNO FD0AK9

CONUS AWIPS ID ALASKA AWIPS ID c.

FBUS37 KWNO FD8US7 FBAK37 KWNO FD8AK7

1,000- to 24,000-foot forecasts 6- Hour Forecast 12-Hour Forecast FBHW33 KWNO FD3HW3 FBOC33 KWNO FD3OC3 24-Hour Forecast FBHW35 KWNO FD5HW5 FBOC35 KWNO FD5OC5

HAWAII AWIPS ID PACIFIC SITES AWIPS ID d.

FBHW31 KWNO FD1HW1 FBOC31 KWNO FD1OC1

30,000- to 53,000-foot forecasts 6- Hour Forecast 12-Hour Forecast FBHW38 KWNO 4 24-Hour Forecast FBHW39 KWNO

Hawaii

FBHW37 KWNO

NWSI 10-812 October 19, 2007 AWIPS ID PACIFIC SITES AWIPS ID FD8HW7 FBOC37 KWNO FD8OC7 FD9HW8 FBOC38 KWNO FD9OC8 FD0HW9 FBOC39 KWNO FD0OC9

NOTE: The Hawaii/Pacific bulletins are separated at the 24,000 foot level instead of 39,000 feet because of the additional, lower levels noted in section 4. 6. Format. The symbolic form of the forecasts is "DDff+TT" in which "DD" is the wind direction, "ff" the wind speed, and "TT" the temperature. Wind direction is indicated in tens of degrees (two digits) with reference to true north, and wind speed is given in knots (two digits). Light and variable wind or wind speeds of less than 5 knots are expressed by "9900." Forecast wind speeds of 100 through 199 knots are indicated by subtracting 100 from the speed and adding 50 to the coded direction. For example, a forecast of 250 degrees, 145 knots, is encoded as 7545. Forecast wind speeds of 200 knots or greater are indicated as a forecast speed of 199 knots. Temperature is indicated in degrees Celsius (two digits) and is preceded by the appropriate algebraic sign for the levels from 6,000 through 24,000 feet. Above 24,000 feet, the sign is omitted since temperatures are negative. 6.1. Format for levels 39,000 feet and below. The bulletin format for levels 39,000 feet and below follows: FBUS31 KWNO 190440 DATA BASED ON 190000Z DATA VALID 190600Z FOR USE 0600-1200Z. TEMPS NEG ABV 24000 FT 3000 6000 9000 12000 18000 24000 30000 34000 39000 ABR 1027 1326+01 1428-03 1431-09 1639-21 1749-34 175849 175957 174758 ABI 2849+04 2857-02 2760-07 2670-20 2682-32 760344 760648 259451 ALS (etc.) NOTE: For Hawaii and Pacific bulletins, the additional levels of 1000, 1500, 2000, and 15000 will be added to this format. This will not require modification for receipt since the data will still be one line per site. 6.2. Format for 45,000- and 53,000-Foot Levels. The bulletin format for the 45,000- and 53,000-foot levels follows: 5

NWSI 10-812 October 19, 2007 Forecasts for these levels are available in the Federal Aviation Administration's (FAA's) Weather Message Switching Center Replacement (WMSCR) only for selected locations listed in Appendix A with a number symbol (#). FBUS37 KWNO 191640 DATA BASED ON 191200Z VALID 191800Z FOR USE 1800-0000Z. TEMPS NEG ABV 24000 FT 45000 53000 ABR 193557 202257 ABI 258055 255561 ALS (etc.) 7. Delayed Forecasts. If the scheduled FB transmission is delayed, users should continue using the valid FB's based on 6-hour earlier data until NCEP transmits the new forecast.

6

NWSI 10-812 October 19, 2007 Appendix A - Forecast Locations # - Indicates locations for which 45,000- and 53,000-foot forecasts are available. Latitude and Longitude are in degrees and minutes. West longitude and south latitude are indicated as negative (-). Elevation is in feet. STATE Identifier ALABAMA BHM # HSV MGM MOB # ALASKA ADK # ADQ # AKN # ANC # ANN # BET # BRW # BTI # BTT # CDB # CZF # EHM # FAI # FYU # GAL # GKN # HOM # JNU # LUR # MCG # MDO # OME # ORT # OTZ #

Location

Latitude

Longitude

Elevation

Birmingham Huntsville Montgomery Mobile

33 33' 34 33' 32 13' 30 41'

-86 44' -86 46' -86 19' -88 14'

620 629 221 190

Adak Kodiak King Salmon Anchorage Annette Island Bethel Barrow Barter Island Bettles Cold Bay Cape Romanzof Cape Newenham Fairbanks Fort Yukon Galena Gulkana Homer Juneau Cape Lisburne McGrath Middleton Island Nome Northway Kotzebue

51 56' 57 46' 58 44' 61 14' 55 03' 60 35' 71 17' 70 10' 66 54' 55 11' 61 47' 58 39' 64 43' 66 35' 64 44' 62 09' 59 39' 58 26' 68 53' 62 49' 59 30' 64 37' 63 04' 66 39' 7

-176 25' 13 -152 35' 112 -156 45' 49 -149 33' 131 -131 37' 112 -161 35' 51 -156 31' 13 -143 55' 49 -151 30' 673 -162 22' 102 -166 02' 457 -162 04' 541 -148 11' 453 -145 05' 431 -156 56' 152 -145 27' 21 -151 29' 78 -134 41' 23 -166 07' 12 -155 24' 338 -146 18' 72 -165 05' 23 -142 04' 1,722 -162 54' 16

SNP # TKA # UNK # YAK # IKO # AFM #

St. Paul Talkeetna Unalakleet Yakutat Nikolski Ambler

57 09' 62 19' 63 53' 59 37' 52 57' 67 06'

NWSI 10-812 October 19, 2007 -170 37' 30 -150 06' 358 -160 48' 21 -139 30' 30 -168 51' 73 -157 51' 289

GULF OF ALASKA 5AB # 5AC # 5AD # 5AE # 5AF # 5AG # ARKANSAS FSM Fort Smith LIT # Little Rock ARIZONA PHX PRC # TUS #

52 25' 52 00' 54 00' 55 00' 56 00' 58 00'

176 00' -135 00' -145 00' -155 00' -137 00' -142 00'

0 0 0 0 0 0

35 23' 34 40'

-94 16' -92 10'

468 258

Phoenix Prescott Tucson

33 25' 34 42' 32 07'

-111 53' -112 28' -110 49'

1,132 5,042 2,630

CALIFORNIA BIH # Bishop BLH # Blythe FAT # Fresno FOT Fortuna ONT Ontario RBL # Red Bluff SAC Sacramento SAN # San Diego SBA # Santa Barbara SFO # San Francisco SIY Montague WJF Lancaster

37 22' 33 35' 36 53' 40 40' 34 03' 40 05' 38 26' 32 44' 34 30' 37 37' 41 47' 34 44'

-118 21' -114 45' -119 48' -124 14' -117 36' -122 14' -121 33' -117 11' -119 46' -122 22' -122 27' -118 13'

4,120 397 332 390 952 354 21 15 10 11 2,648 2,347

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NWSI 10-812 October 19, 2007 COLORADO ALS # DEN # GJT # PUB Alamosa Denver Grand Junction Pueblo 37 20' 39 48' 39 03' 38 17' -105 48' -104 53' -108 47' -104 25' 7,535 5,333 4,858 4,726

CONNECTICUT BDL Windsor Locks FLORIDA EYW JAX # MIA # MLB PFN PIE # TLH # GEORGIA ATL # CSG SAV HAWAII ITO # HNL # LIH # OGG # LNY # KOA # IDAHO BOI # LWS PIH # ILLINOIS JOT # SPI INDIANA EVV FWA

41 56'

-72 41'

174

Key West Jacksonville Miami Melbourne Panama City St. Petersburg Tallahassee

24 35' 30 26' 25 57' 28 06' 30 12' 27 54' 30 33'

-81 48' -81 33' -80 27' -80 38' -85 40' -82 41' -84 22'

4 30 10 33 20 11 81

Atlanta Columbus Savannah

33 37' 32 36' 32 09'

-84 26' -85 01' -81 06'

1,026 397 50

Hilo Honolulu Lihue Kahului Lanai Kailua-Kona

19 43' 21 19' 21 59' 20 54' 20E47' 19E44'

-155 03' -157 55' -159 20' -156 26' -156 57' -156 03

38 13 153 54 1,308 47

Boise Lewiston Pocatello

43 34' 46 22' 42 52'

-116 14' -116 52' -112 39'

2,858 1,438 4,448

Joliet Springfield

41 32' 39 50'

-88 19' -89 40'

582 597

Evansville Fort Wayne

38 02' 40 58' 9

-87 31' -85 11'

418 800

IND #

Indianapolis

39 48'

NWSI 10-812 October 19, 2007 -86 22' 797

IOWA BRL DBQ # DSM # MCW KANSAS GCK # GLD # ICT # SLN

Burlington Dubuque Des Moines Mason City

40 43' 42 24' 41 26' 43 05'

-90 55' -90 42' -93 38' -93 19'

698 1,076 957 1,213

Garden City Goodland Wichita Salina

37 55' 39 23' 37 43' 38 52'

-100 43' -101 41' -97 27' -97 37'

2,888 3,654 1,332 1,272

KENTUCKY LOU # Louisville LOUISIANA LCH Lake Charles MSY # New Orleans SHV # Shreveport MAINE BGR CAR # PWM

38 06'

-85 34'

546

30 08' 30 01' 32 46'

-93 06' -90 10' -93 48'

16 4 258

Bangor Caribou Portland

44 50' 46 52' 43 38'

-68 52' -68 01' -70 18'

192 623 74

MARYLAND EMI # Westminster MASSACHUSETTS ACK Nantucket BOS # Boston MICHIGAN ECK # Peck MKG Muskegon MQT Marquette SSM # Sault Ste. Marie TVC Traverse City MINNESOTA AXN Alexandria DLH Duluth

39 29'

-76 58'

820

41 16' 42 21'

-70 01' -70 59'

48 20

43 15' 43 10' 46 31' 46 24' 44 40' 45 57` 46 48' 10

-82 43' -86 02' -87 35' -84 18' -85 32' -95 13' -92 12'

810 628 1,419 690 624 1,425 1,428

INL # MSP # MISSOURI CGI COU MKC # SGF # STL #

International Falls 48 33' Minneapolis-St Paul 45 08'

NWSI 10-812 October 19, 2007 -93 24' 1,184 -93 22' 841

Cape Girardeau Columbia Kansas City Springfield St. Louis

37 13' 38 48' 39 16' 37 21' 38 51'

-89 34' -92 13' -94 35' -93 20' -90 28'

342 889 758 1,267 589

MISSISSIPPI JAN # Jackson MONTANA BIL # DLN # GPI # GGW # GTF # MLS

32 30'

-90 10'

346

Billings Dillon Kalispell Glasgow Great Falls Miles City

45 48' 45 14' 48 12' 48 12' 47 27' 46 22'

-108 37' -112 32' -114 10' -106 37' -111 24' -105 57'

3,605 5,238 2,972 2,293 3,674 2,628

NORTH CAROLINA HAT Cape Hatteras ILM # Wilmington RDU # Raleigh-Durham NORTH DAKOTA DIK # Dickinson GFK Grand Forks MOT Minot NEBRASKA BFF # GRI OMA ONL #

35 16' 34 21' 35 52'

-75 33' -77 52' -78 47'

11 32 437

46 51' 47 57' 48 15'

-102 46' -97 11' -101 17'

2,589 844 1,715

Scottsbluff Grand Island Omaha O'Neill

41 53' 40 59' 41 10' 42 28'

-103 28' -98 18' -95 44' -98 41'

3,965 1,846 983 2,030

NEW HAMPSHIRE BML Berlin NEW JERSEY ACY Atlantic City NEW MEXICO ABQ # Albuquerque

44 38' 39 27'

-71 11' -74 34'

1,158 76

35 02' 11

-106 48'

5,352

FMN # ROW TCC ZUN NEVADA BAM # ELY # LAS # RNO # NEW YORK ALB # BUF # JFK # PLB # SYR OHIO CLE # CMH CVG

Farmington Roswell Tucumcari Zuni

36 44' 33 20' 35 10' 34 57'

NWSI 10-812 October 19, 2007 -108 05' 5,503 -104 37' 3,669 -103 35' 4,063 -109 09' 6,454

Battle Mountain Ely Las Vegas Reno

40 34' 39 17' 36 04' 39 31'

-116 55' -114 50' -115 09' -119 39'

4,532 6,255 2,174 4,412

Albany Buffalo New York Plattsburgh Syracuse

42 44' 42 55' 40 37' 44 48' 43 09'

-73 48' -78 38' -73 46' -73 24' -76 12'

285 725 12 371 421

Cleveland Columbus Covington

41 21' 39 59' 39 00'

-82 09' -82 55' -84 42'

792 816 891

OKLAHOMA GAG Gage OKC # Oklahoma City TUL Tulsa OREGON AST IMB # LKV # OTH # PDX # RDM

36 20' 35 24' 36 11'

-99 52' -97 38' -95 47'

2,223 1,295 676

Astoria Kimberly Lakeview North Bend Portland Redmond

46 09' 44 38' 42 29' 43 24' 45 44' 44 15'

-123 52' -119 42' -120 30' -124 10' -122 35' -121 18'

11 5,220 4,728 14 26 3,077

12

NWSI 10-812 October 19, 2007 PENNSYLVANIA AGC Pittsburgh AVP Wilkes-Barre/ Scranton PSB # Phillipsburg SOUTH CAROLINA CAE # Columbia CHS Charleston FLO Florence GSP Greer SOUTH DAKOTA ABR # Aberdeen FSD Sioux Falls PIR Pierre RAP # Rapid City TENNESSEE BNA # MEM # TRI # TYS TEXAS ABI # AMA # BRO # CLL CRP # DAL # DRT # ELP # HOU # INK # LBB LRD # MRF PSX SAT # SPS 40 16' 41 16' 40 54' -80 02' -75 41' -77 59' 1,252 957 1,948

33 51' 32 53' 34 13' 34 53'

-81 03' -80 02' -79 39' -82 13'

236 45 147 972

45 25' 43 38' 44 23' 43 58'

-98 22' -96 46' -100 09' -103 00'

1,301 1,429 1,742 3,182

Nashville Memphis Bristol/Johnson Knoxville

36 07' 35 03' 36 28' 35 54'

-86 40' -89 58' -82 24' -83 53'

599 332 1,519 981

Abilene Amarillo Brownsville College Station Corpus Christi Dallas Del Rio El Paso Houston Wink Lubbock Laredo Marfa Palacios San Antonio Wichita Falls

32 28' 35 17' 25 55' 30 36' 27 54' 32 50' 29 22' 31 48' 29 38' 31 52' 33 42' 27 28' 30 17' 28 45' 28 38' 33 59'

-99 51' -101 38' -97 22' -96 25' -97 26' -96 51' -100 55' -106 16' -95 16' -103 14' -101 54' -99 25' -103 37' -96 18' -98 27' -98 35'

1,790 3,605 22 319 44 487 999 3,956 47 2,818 3,281 508 4,848 15 809 1,015

13

NWSI 10-812 October 19, 2007 UTAH BCE # SLC # VIRGINIA ORF RIC # ROA Bryce Canyon Salt Lake City 37 41' 40 51' -112 18' -111 58' 7,586 4,227

Norfolk Richmond Roanoke

36 53' 37 30' 37 20'

-76 12' -77 19' -80 04'

27 168 1,175

WASHINGTON GEG # Spokane SEA # Seattle YKM Yakima WISCONSIN GRB # Green Bay LSE La Crosse WEST VIRGINIA CRW # Charleston EKN Elkins WYOMING CZI # LND MBW RKS #

47 33' 47 26' 46 34'

-117 37' -122 18' -120 26'

2,372 429 1,095

44 33' 43 52'

-88 11' -91 15'

695 653

38 20' 38 54'

-81 46' -80 05'

982 1,987

Crazy Woman Lander Medicine Bow Rock Springs

43 59' 42 48' 41 50' 41 35'

-106 26' -108 43' -106 00' -109 00'

4,798 5,586 7,000 6,760

ATLANTIC OCEAN 2XG # Gauge GULF OF MEXICO T01 West Cameron T06 Ship Shoal T07 S Mobile South 4J3 S Apalachicola South H51 Bay City H52 Mid Gulf H61 W Fort Myers West PACIFIC OCEAN JON # Johnston Island MAJ # Majuro KWA # Kwajalein

30 20'

-78 30'

0

28 30' 28 30' 28 30' 28 30' 26 30' 26 00' 26 30'

-93 30' -91 00' -88 00' -85 00' -95 00' -89 30' -84 00'

0 0 0 0 0 0 0

16 44' 07 04' 08 43' 14

-169 32' 171 16' 167 44'

7 6 16

MDY # PPG # TTK # AWK # GRO # GSN # TNI # GUM # TKK # PNI # ROR # T11 #

Midway Island Pago Pago Kosrae Wake Island Rota Saipan West Tinian Guam Chuuk, FSM Pohnpei, FSM Koror, Palau Yap, FSM

28 12' -14 20' 05 21' 19 17' 14 11' 15 07' 15 00' 13 29' 07 28' 06 59' 07 22' 09 30'

NWSI 10-812 October 19, 2007 -177 23' 13 -170 43' 30 162 58' 11 166 39' 14 145 14' 607 145 44' 215 145 37 271 144 48' 298 151 51' 10 158 13' 8 134 33' 176 138 05' 91

15

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