NOTE: The nws-changes mailing list is no longer active. The list archives are made available for historical reasons.
432
NOUS41 KWBC 091715
PNSWSH
PUBLIC INFORMATION STATEMENT...SERVICE CHANGE NOTICE 03-21
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
120 PM EDT WED APR 9 2003
TO FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER
WIRE SERVICE /NWWS/ SUBSCRIBERS...EMERGENCY MANAGERS
WEATHER INFORMATION NETWORK /EMWIN/ SUBSCRIBERS...
NOAAPORT SUBSBRIBERS...OTHER NATIONAL WEATHER SERVICE
/NWS/ CUSTOMERS AND PARTNERS...AND NWS EMPLOYEES
FROM GLENN AUSTIN
ACTING CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH
SUBJECT ADDITION TO THE NATIONAL WEATHER SERVICE PROBABILISTIC
HEAT INDEX PRODUCT SUITE...EFFECTIVE MAY 1 2003
ON THURSDAY MAY 1 2003...THE NATIONAL WEATHER SERVICE WILL
ENHANCE ITS HEAT INDEX PRODUCT SUITE. FORECASTS OF DAYTIME HIGH
HEAT INDEX AND NIGHTTIME LOW HEAT INDEX WILL BE ADDED TO THE
CURRENT DAILY MEAN HEAT INDEX FORECASTS SUITE. THERE WILL BE NO
CHANGES TO THE SUITE OF MEAN HEAT INDEX PRODUCTS /WORLD
METEOROLOGICAL ORGANIZATION /WMO/ HEADING: FMUS23 KWNH...AWIPS
IDENTIFIER: PRBEHI AND FMUS24 KWNH...PRBWHI/ THAT WERE FIRST MADE
AVAILABLE DURING THE SUMMER OF 2002...ANNOUNCED IN SERVICE CHANGE
NOTICE 02-25 AT THE WEBSITE LISTED AT THE END OF THIS MESSAGE.
THE ADDITIONAL HIGH AND LOW HEAT INDEX FORECASTS WILL BE
PROBABILISTIC IN NATURE SIMILAR TO THE CURRENT MEAN HEAT INDEX
FORECASTS.
THE NEW GRAPHICS WILL DISPLAY THE MAXIMUM AND MINIMUM HEAT INDEX
FORECAST FOR DAYS THREE THROUGH SEVEN. FOR EACH DAY...
PROBABILITIES WILL BE ISSUED INDICATING THE CHANCE THE MAXIMUM
HEAT INDEX WILL EXCEED 95...100...OR 105 DEGREES. FOR THE
MINIMUM...HEAT INDEX PROBABILITIES OF EXCEEDING 75...80...OR 85
WILL BE PROVIDED. SEE TABLE 1 FOR A LIST OF THESE PRODUCTS.
THE TEXT PRODUCT WILL INCLUDE THE FORECAST MAXIMUM AND MINIMUM
HEAT INDEX AS WELL AS THE DAILY AVERAGE HEAT INDEX FORECAST
VALUE. IT WILL ALSO INCLUDE THE PROBABILITY OF THE HEAT INDEX
EXCEEDING 70...75...80... 85...90...95 AND 100 DEGREES FOR BOTH
THE MINIMUM AND MEAN HEAT INDEX...BUT EXCEEDING 80...85...90...
95...100...105...AND 110 DEGREES FOR THE MAXIMUM HEAT INDEX. SEE
TABLE 1.
THE HEAT INDEX IS PREPARED BY THE HYDROMETEOROLOGICAL PREDICTION
CENTER /HPC/ IN CAMP SPRINGS MARYLAND. IT IS CALCULATED FOR EACH
SELECTED LOCATION BASED ON HPC FORECASTS. THEY ARE CONVERTED TO
PROBABILISTIC VALUES BY TAKING INTO ACCOUNT THE DIFFERENCES IN
THE FORECASTS OVER AN ENSEMBLE OF MODEL FORECASTS AT A SPECIFIC
LOCATION AND FORECAST DAY.
THE MEAN HEAT INDEX IS INTENDED TO GIVE CUSTOMERS AN EARLY
INDICATION OF ANY SIGNIFICANT HEAT RELATED PROBLEMS. THE HEAT
INDEX IS CALCULATED BY TAKING INTO ACCOUNT BOTH THE TEMPERATURE
AND THE HUMIDITY AND IS A MORE ACCURATE INDICATOR OF DISCOMFORT
THAN THE TEMPERATURE ALONE. STUDIES HAVE SHOWN THAT THE
THRESHOLD FOR DANGER DUE TO HEAT RELATED STRESS IS AN AVERAGE
DAILY HEAT INDEX OF 85 DEGREES OR HIGHER.
THE PROBABILISTIC HEAT INDEX FORECAST TEXT BULLETIN IS PROVIDED
IN TWO PARTS...EAST /E/ AND WEST /W/.
IN ADDITION...HPC DISSEMINATES THESE PRODUCTS AND RELATED
INFORMATION ON THE INTERNET. THE URL ADDRESS AVAILABLE MAY 1 IS
AS FOLLOWS /USE LOWER CASE LETTERS/.
HTTP://WWW.HPC.NCEP.NOAA.GOV/HEAT_INDEX.SHTML
TABLE 1. GRAPHICS PRODUCTS COVERING THE CONTINENTAL UNITED
STATES AND TEXT BULLETINS AT SELECTED CITY LOCATIONS.
MAXIMUM HEAT INDEX GRAPHICS
DAY HI WMO HEADING AWIPS ID
3 95 PTNK98 KWNH RBG396
3 100 PTNK98 KWNH RBG300
3 105 PTNK98 KWNH RBG305
4 95 PTNM98 KWNH RBG496
4 100 PTNM98 KWNH RBG400
4 105 PTNM98 KWNH RBG405
5 95 PTNO98 KWNH RBG596
5 100 PTNO98 KWNH RBG500
5 105 PTNO98 KWNH RBG505
6 95 PTNQ98 KWNH RBG696
6 100 PTNQ98 KWNH RBG600
6 105 PTNQ98 KWNH RBG605
7 95 PTNS98 KWNH RBG796
7 100 PTNS98 KWNH RBG700
7 105 PTNS98 KWNH RBG705
MAXIMUM HEAT INDEX TEXT BULLETINS
AREA WMO HEADING AWIPS ID
EAST FMUS23 KWNH PRBEHH
WEST FMUS24 KWNH PRBWHH
MINIMUM HEAT INDEX GRAPHICS
DAY MIN WMO HEADING AWIPS ID
3 75 PTNK98 KWNH RBG375
3 80 PTNK98 KWNH RBG380
3 85 PTNK98 KWNH RBG384
4 75 PTNM98 KWNH RBG475
4 80 PTNM98 KWNH RBG480
4 85 PTNM98 KWNH RBG484
5 75 PTNO98 KWNH RBG575
5 80 PTNO98 KWNH RBG580
5 85 PTNO98 KWNH RBG584
6 75 PTNQ98 KWNH RBG675
6 80 PTNQ98 KWNH RBG680
6 85 PTNQ98 KWNH RBG684
7 75 PTNS98 KWNH RBG775
7 80 PTNS98 KWNH RBG780
7 85 PTNS98 KWNH RBG784
MINIMUM HEAT INDEX TEXT BULLETINS
AREA WMO HEADING AWIPS ID
EAST FMUS23 KWNH PRBEHL
WEST FMUS24 KWNH PRBWHL
IF YOU HAVE ANY QUESTIONS ABOUT THE HEAT INDEX PRODUCT SUITE...
YOU CAN CONTACT
KEVIN MCCARTHY...DEPUTY DIRECTOR
NCEP HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS MARYLAND
PHONE 301-763-8000 X7304
EMAIL KEVIN.MCCARTHY@xxxxxxxx
-OR-
ROBERT KELLY...CHIEF
NCEP/HPC FORECAST OPERATIONS BRANCH
CAMP SPRINGS MARYLAND
PHONE 301-763-8000 X7306
EMAIL ROBERT.KELLY@xxxxxxxx
THIS NOTICE AND OTHER NWS SERVICE CHANGE NOTICES ARE AVAILABLE AT
THE FOLLOWING URL ADDRESS /USE LOWER CASE LETTERS/.
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
---------- End Forwarded Message ----------
nws-changes archives: