What's New with the ETA Ingredient Maps?


24 November 2003: An archive of ETA ingredient maps has been added. Maps are saved for 3 days, and the transfer occurs at 9am for the 12UTC maps and 9pm for the 00UTC maps. For access to the archive see link in the toolbar to the left, or click here. Since this was just started today, the archive will not have valid data in it immediately.



6 November 2003: As an experiment, I have added the full wind frontogenesis to the cross section ingredients maps. It is on the top left-hand panel, the same panel as Q-vector convergence (white lines) and negative PVes (shaded). This may lead to too much clutter on the maps. If you have an opinion on whether I should keep or remove the frontogenesis let me know.



6 November 2003: A new set of cross section ingredient maps have been added: International Falls, MN to Hayward, WI. Go to cross sections.



27 October 2003: Run times for the ETA ingredient maps have been adjusted for the end of daylight savings time. All times are correct as listed under the 13 January 2002 entry.



1 October 2003: The area of the Midwest ingredients maps was extended slightly further south to include more of Texas



7 April 2003: Run times for the ETA ingredient maps have been adjusted for daylight savings time. Runs now begin at 10:30 CDT.



25 February 2003: Ingredients maps and discussion added for a case of light snow banding in southeastern Wisconsin on 24 February 20003: Click here to see it.



12 February 2003: Ingredients maps and discussion added for the first significant snowfall of the season in southern Wisconsin. Click here to see it.



4 November 2002: Run times for the ETA ingredient maps have been adjusted for the end of daylight savings time. All times are correct as listed under the 13 January 2002 entry.



22 October 2002: Ingredient maps with frontogenesis and PVF have been fixed. Apologies for the delay.



16 October 2002: Ingredient maps with frontogenesis and PVF are currently returning blank screens. This will be fixed shortly.



11 April 2002: Run times for the ETA ingredient maps have been adjusted for daylight savings time. All times are one hour later than those listed below.



19 March 2002: The recent cases page has been linked to the main ingredients website and a new discussion of the recent March 13-15 snowstorm in South Dakota, Minnesota, and Wisconsin has been added.



1 February 2002: A discussion page has been added for the ingredient maps with frontogenesis and PVF, see separate page.



13 January 2002: The operational ingredient maps will *begin* running at 9:30am and 9:30pm CT, one hour and a half earlier than before. Also, we are now running on three machines so three runs are processed simultaneously. Each run takes 45 minutes to 1 hour. The approximate new times that each will be started and finished (up to 60 hour forecasts) are (all times in central time):

Traditional Ingredients Maps:
Midwest: starts 9:30 am/pm CT, finishes 10:15 am/pm CT (sr1)
East: starts 9:30 am/pm CT, finishes 10:15 am/pm CT (m1)
West: starts 10:15 am/pm CT, finishes 11 am/pm CT (sr2)

Ingredients Maps with Frontogenesis and PVF:
Midwest: starts 9:30 am/pm CT, finishes 10:15 am/pm CT (s1)
East: starts 10:15 am/pm CT, finishes 11 am/pm CT (s2)
West: starts 11 am/pm CT, finishes 11:45 am/pm CT (s3)

Ingredients Cross-Sections:
LSE to MKE, Wisconsin: starts 10:15 am/pm, finishes 10:30 am/pm CT (m2)



2 January 2002:Ingredients Cross-Section Maps for North Carolina for the upcoming storm:See Separate North Carolina Cross-Section Page



26 November 2001: Java Animations for the Ingredients Maps



26 October 2001: There is a second set of ingredient maps (see example), run simultaneously with the first. These include QG (Q-vector, white contours top left) and non-QG (frontogenesis, white contours top right) forcing diagnostics, as well as the PVQ (green, bottom left) and a new parameter, PVF (blue bottom right). PVF is the frontogenesis analog to PVQ: it is the product of frontogenesis and PVes, where PVes is negative and frontogenesis is positive. Thus, it highlights areas where there is frontogenetic forcing for ascent in the presence of instability. See the discussion of PVQ and discussion of PVF for more information.



23 October 2001: There are now three separate areas for the ingredient maps: Midwestern, Eastern, and Western. Previously, the Midwestern & Eastern were combined onto one map and some areas were left out.