Miami TX Tornado, May 24, 1994 Research

A. Summary

My major contributions in recent years all center on severe weather phenomena in California. The referreed publications in this area can be found in the AMS journals Weather and Forecasting and Monthly Weather Review. I have also authored or coauthored several Technical Memoranda and Technical Attachments for the Western Region of the National Weather Service.

The chief conceptual contribution to the body of knowledgeon severe thunderstorms may not seem novel as of this date (in 2001), but was somewhat controversial at the time--namely, that supercell thunderstorms can and do occur in California, and that some of these are associated with tornadoes that are mesocyclone-induced.

Multiple Vortex Supercell Tornado Near Chico, CAm Sept 26, 1986

Multiple Vortex Supercell Tornado Near Chico, CA

September 26, 1986

Mobile Mesonet Unit #3 Crew

Mobile Mesonet Vehicle 3, May 25, 2000

The first step in proving this absolutely non-controversial notion (to the scientific community) to highly-skeptical forecasters with rigidified concepts of the severe weather forecasting problem in California, was to document them. Braun and Monteverdi (1991) was the first such documentation and even then many forecasters in the state dismissed the case as an oddity.

The second step was to educate forecasters (after educating myself) about the controls on severe thunderstorms. Heretofore, buoyancy was about the extent of the ingredients forecasters considered when forecasting thunderstorms in California. Elsewhere, of course, the role of shear in augmenting buoyancy and organizing thunderstorms was well known.

A series of technical memoranda/attachments, seminars (as Visiting Scientist to the National Weather Service in 1990 and 2000) to forecast offices and collegial interactions, such as recent ones with Alex Tardy (Forecaster, KSTO), Warren Blier, Wilfred Pi and Duane Dykema (SOO, and Forecasters, respectively, at KMTR), and many of the staff at KHNX, have gone a long way to eliminating the long-standing bias to buoyancy.

I have also served as Visiting Scientist to the National Severe Storms Lab in 1990 and 2000 and was a participant (complete with NSSL Travel Orders) in Sub-VORTEX 1999 and STEPS 2000 with the Mobile Mesonets in each. In 2000, I was "captain" of Unit 3 for two weeks.

Several students have been instrumental in this research, including current MS in Applied Geosciences candidates Gary Lipari and Ted Schlaepfer (Honorable Mention Poster at 20th Conference on Severe Local Storms).

Other areas of research involve California winter storms, El Niño and La Niña, and their impacts on California precipitation.

Relaxing with Mobile Mesonet Crews

Relaxing With the Mobile Mesonet Crews After A Day in the Field

Mobile Mesonets

Mobile Mesonets, NOAA 1 and Radiosonde Balloon Crew in eastern Colorado in May 2000


B. Publications

1. Refereed Publications

Umscheid, M.E., J. P. Monteverdi, and J.M. Davies, 2006: Photographs and analysis of an unusually large and long-lived firewhirl. Electronic J. Severe Storms Meteor., 1, no. 2, 1-13. (Abstract, PDF)

Shafer, J. C., W. J. Steenburgh, J. A. W. Cox, and J. P. Monteverdi, 2006: Terrain influences on synoptic storm structure and mesoscale precipitation distribution during IPEX IOP3. Mon. Wea. Rev. 134, 478-497.

Monteverdi, J. P., C. Doswell III, and G.S. Lipari, 2003: Shear parameter thresholds for forecasting tornadic thunderstorms in northern and central California. Wea. Forecasting, 18, 357-370.

Hanstrum, B. N., Mills, G.A., Watson, A., Monteverdi, J.P., and Doswell, C.A.III, 2002: The cool season tornadoes of California and Australia. Wea. Forecasting, 17, 705-722.

Monteverdi, J. P., W. Blier, G. Stumpf, W. Pi and K. Anderson, 2001: First WSR-88D documentation of a an anticyclonic supercell with anticyclonic tornadoes: the Sunnyvale/Los Altos tornadoes of 4 May 1998, Mon.Wea.Rev., 129, 2805-2814.

Monteverdi, J.P. and J. Null, 1998: A balanced view of the impact of the 1997/98 El Niño on California precipitation. Weather, 53, No. 9, 310-313.

Monteverdi, J.P. and J. Null, 1998: The Impact of the 1997-98 El Niño on Precipitation in the West. Natural Hazards Observer. Volume XXII, Number 3--January 1998.

Monteverdi, J.P. and S. Johnson, 1996: A supercell thunderstorm with hook echo in the San Joaquin Valley, California. WEA. FORECASTING, 10, 246-261.

Berg, N., M. Heggli, and J. Monteverdi, 1995: The influence of meteorology on rime and snow chemistry at a mountaintop site in northern California. Water Air Soil Poll., 81, 25-36.

Monteverdi, J.P. and J. Quadros, 1994: Convective and rotational parameters associated with three tornado episodes in northern and central California.WEA. FORECASTING., 9, 165-178.

Braun, S.A. and J.P. Monteverdi, 1991: An investigation of a mesocyclone-induced tornado occurrence in northern California. WEA. FORECASTING, 6, 13-31.

Monteverdi, J.P., Braun, S.A., and T.C. Trimble, 1988: Funnel clouds in the San Joaquin Valley, California. MON. WEA. REV. 116, 782-789.

Byrne, R., Granger, O., and J.P. Monteverdi, 1983: Recent rainfall trends on the margins of the subtropical deserts: a comparison of selected Northern Hemisphere regions. QUART.RES, 3, 1-12.

Monteverdi, J.P., 1976: The single air mass disturbance and precipitation characteristics at San Francisco, MON. WEA. REV. 104, 1289-1296.

Monteverdi, J.P., and B.L. Wood, 1973: The December 1972 freeze and its effects on the eucalyptus forest of the Oakland-Berkeley Hills.WEATHERWISE. 26,
160-167.

Monteverdi, J.P., 1973: The Santa Ana weather type and extreme fire hazard in the Oakland-Berkeley Hills.WEATHERWISE. 26, 118-121.

2. Refereed Technical Memoranda, Books and Invited Conference Publications

Monteverdi, J.P., 2005: Review of Tornadoes (by Michael Alalby). Appears in Readings, Bull. Amer. Meteor. Soc. July 2005, 7, pp. 998-1000.

Blier, W., Monteverdi, J. and J. Null, 2005: The Historic San Francisco Flood of 25 February 2004. Amer Met Soc National Meeting, January 2005. (PDF)

Monteverdi, J.P., and J. Null, 1997: El Niño and California Precipitation. National Weather Service Technical Attachment 97-31.

Monteverdi, J.P., 1996: Flood-producing storm types in California. Invited Paper in Preprints. Symposium on the California Floods of the Winter of 1994-1995. Sierra College, Rocklin, CA.

Monteverdi, J.P., 1995: Meteorology of hydrologically-critical storms in California. 1995 California Weather Symposium. Sierra College, June 1995.

Monteverdi, J.P. and J. Quadros, 1994: Convective and rotational parameters associated with three tornado outbreaks in northern and central California. National Weather Service Western Region Tech. Mem., NWS-222.

Monteverdi, J.P., 1994: A case study of the operational usefulness of the SHARP Workstation in forecasting a "cold-sector" mesocyclone-induced tornado event in northern California. National Weather Service Western Region Tech. Mem., NWS-219.

Monteverdi, J.P. and J. Quadros, 1993: Convective and rotational parameters associated with three tornado outbreaks in northern and central California. National
Weather Service Western Region Tech. Mem., NWS-222.

Monteverdi, J.P., 1993: A case study of the operational usefulness of the SHARP Workstation in forecasting a "cold-sector" mesocyclone-induced tornado event in
northern California. National Weather Service Western Region Tech. Mem., NWS-219.

Monteverdi, J.P. and S.A.Braun, 1988: An investigation of the 24 September 1986 "cold sector" tornado outbreak in northern California. National Weather Service
Western Region Tech. Mem., NWS-203, 52 pp.

Monteverdi, J.P., 1986: Translation of German weather service documents for D-Day. Proceedings of the Conference on the Role of Meteorology in the D-Day
Invasion. American Meteorological Society, Boston.

Monteverdi, J.P., 1984: Comparisons among three record-rain producing storms in north-central California. Excerpted in "Summary of the LANDSLIDES AND
FLOODING CONFERENCE, Stanford University, August 1982". National Academy of Sciences, Washington, D.C.

Monteverdi, J.P., 1980: The effects of the physical environment on climate. JOUR. WATER AIR SOIL POLL., 12, 23-27.

3. Papers Presented At Conferences and Symposia

Monteverdi, J.P., and R. Edwards, 2008: Documentation of the overland reintensification of Tropical Storm Erin over Oklahoma, August 18, 2007. Paper number: P4.6. 24th Conf. Sev. Local Storms, 27-31 October, 2008, Savannah, Georgia

Monteverdi, J.P., E. Polito, M. Gough, R. Bethke, and T. Seddon, 2008: An Analysis of a Prolific Tornado-producing Cyclic Supercell Thunderstorm in Thayer County Nebraska, May 24, 2004. Paper number: P3.1, 24th Conf. Sev. Local Storms, 27-31 October, 2008, Savannah, Georgia.

Polito, Elizabeth, K. Tanner and J. P. Monteverdi, 2008: Assessing middle school and college students' conceptions about tornadoes and other weather phenomena.Paper number: P7.2. 24th Conf. Sev. Local Storms, 27-31 October, 2008, Savannah, Georgia.

Monteverdi, J.P., R. Edwards, G. Stumpf and D. Gudgel, 2006: An analysis of the 7 July 2004 Rockwell Pass, CA tornado: highest elevation tornado tocumented in the US. 23rd Conf. Sev. Local Storms, Preprints, St. Louis, MO.

Monteverdi, J.P., K. Saussy, A. Cross, C. Meherin, C. Medjber and S. Lau, 2006: An analysis of the 22 May 2004 Furnas County, Nebraska tornadic supercell. 23rd Conf. Sev. Local Storms, Preprints, St. Louis, MO.

Frieberg, E. and J. Monteverdi, 2005: Relationship of Warm Season Cycles in Onshore Pressure Differences to Temperatures in North-central California. Amer Met Soc National Meeting, January 2005. (PDF) (Pictures)

Gose, E., Frieberg, E., Meherin, C., and J. Monteverdi, 2005: Production of Television Forecasts for San Francisco State University Campus Television and the World Wide Web. Amer Met Soc National Meeting, January 2005. (PDF) (Pictures)

Landolt, Scott D., Porter, Daniel L. and John P. Monteverdi, 2004: An Analysis of the June 23rd, 2002, Brown County, South Dakota Tornadic Cyclical Supercell. Preprints, P10.5, 22nd AMS Conference on Severe Local Storms, Hyannis, MA

Schlaepfer, Theodore, B. and John P. Monteverdi, 2004: Radar Documentation of a Cyclic Tornadic Supercell in the San Joaquin Valley, California. Preprints, P7.5, 22nd AMS Conference on Severe Local Storms, Hyannis, MA.

Lipari, G.S., and J.P. Monteverdi: 2000: Convective and shear parameters associated with northern and central California tornadoes during the period 1990-94. Preprints---20th AMS Conference on Severe Local Storms. Orlando, FL.

Monteverdi, J. P., C. Doswell III, and G.S. Lipari, 2000: Shear parameter thresholds for forecasting California tornadic thunderstorms. Preprints---20th AMS Conference on Severe Local Storms. Orlando, FL.

Monteverdi, J. P., W. Blier, G. Stumpf, W. Pi and K. Anderson, 2000: First WSR-88D documentation of a an anticyclonic supercell with anticyclonic tornadoes: the Sunnyvale/Los Altos tornadoes of 4 May 1998, Preprints---20th AMS Conference on Severe Local Storms. Orlando, FL...

Schlaepfer, T., and J.P. Monteverdi, 2000: A case study of a well-documented classic right-moving tornadic thunderstorm in the San Joaquin Valley, California. Preprints---20th AMS Conference on Severe Local Storms. Orlando, FL.

Monteverdi, J.P., Hanstrum, B., Doswell, C., Watson, Andrew and G. Lipari, 1998: Cool Season Tornadoes in Austrailia: Comparison with California cases. Presented at the 1998 Severe Storms Conference, American Meteorological Society, Sept. 14, 1998.

Monteverdi, J.P., 1993: Convective and rotational parameters associated with two mesocylone-induced tornado outbreaks in north-central California. Presented at the 1993 Severe Local Storms Conference, St. Louis, October 4.

Monteverdi, J.P. and J. Quadros, 1993: Convective and rotational parameters associated with three tornado episodes in northern and central California. Presented at 1993 PACLIM Conference, Asilomar, April.

Monteverdi, J.P. and E. Seibel, 1984: A documentation of oceanographic and meteorological anomalies on the West Coast during the El Nino event of 1982-83. SYMPOSIUM ON THE EL NINO EVENT OF 1982-1983. American Association for the Advancement of Science, Annual Meeting, San Francisco State University, June 1984.

Monteverdi, J.P., 1983: Synoptic controls of recent warm season precipitation increases in a rainfall-sensitive agricultural region of California. SYMPOSIUM ON HUMAN-ATMOSPHERE INTERACTIONS IN THE SEMIARID REGIONS OF THE UNITED STATES. American Association for the Advancement of Science, Annual Meeting, Logan, Utah, June 1983.

Monteverdi, J.P.,
1982: Comparisons among three record-rain producing storms in north-central California. CONFERENCE ON LANDSLIDING AND FLOODING, Stanford University, August 1982.

Monteverdi, J.P., 1980: An overview of the significance, patterns and meteorological controls of the precipitation variability of the Central Valley of California. American Association for the Advancement of Science, Annual Meeting, Davis, CA, June 1980.

Monteverdi, J.P., 1978: A drought and an end to the drought. Association of American Geographers, Annual Meeting, New Orleans, April 1978.

4. Laboratory Manuals

Monteverdi, J.P. and J. Michaelsen, 1979: A satellite photo atlas of selected weather patterns. California Book Co., Ltd., Berkeley, CA, 95 pp.

Monteverdi, J.P., 1974: Synoptic meteorology of California weather anomalies. California Book Co., Ltd., Berkeley, CA, 415 pp.

Monteverdi, J.P., Vannucci, S. and L. Gummerson, 1970: Descriptive meteorology of California weather anomalies. California Book Co., Ltd., Berkeley, CA. Two volumes: Vol. 1, 75 pp; Vol. 2, 225 pp.

5.     Website Authoring

 

2000:   Circulation Singularity in La Niña Winters

http://home.earthlink.net/~montever/Singularity/DecFeb.html

 

2000:   La Niña May-June Composites from the Period 1951-1999: Foreshadowing of Great Plains Spring Patterns 2000

http://home.earthlink.net/~montever/LaNinaComposites/Composite2000.html

 

2000:   The Pitfalls of Improper Use of PVA and "Overrunning" To Account for Precipitation

http://home.earthlink.net/~montever/Jan23_00/Jan23.html

 

2000.  Sunnyvale F2 Tornado:  First Documentation of an Anticyclonic Tornado with an Anticyclonic Supercell) http://tornado.sfsu.edu/geosciences/StormChasing/Cases/Sunnyvale/Sunnyvale.html

 

1999:   Composite 500 mb and Surface Fields in El Niño and La Niña Years:  A Comparison

http://tornado.sfsu.edu/geosciences/StormChasing/cases/EN_LN_Patterns/pattern_comparison.html

 

1998.  La Niña and California Precipitation (with Jan Null)

http://www.wdc.ndin.net/calnina.html

 

1997:El Niño and California Precipitation (with Jan Null)

http://tornado.sfsu.edu/geosciences/elniño.html

 

1996-2002.  Department of Geosciences

http://tornado.sfsu.edu/

 

1996-2000.  Personal Storm Pages

http://tornado.sfsu.edu/geosciences/stormchase.html

 


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