15 articles tagged "Climate and Weather".

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The biggest topic seems to be how wet it is and how much more rain Indiana can expect. So far, May has experienced near-normal precipitation throughout the central part of the state with 0.5”-2” in southern and northern regions (Figure 1).  Combining this with April’s precipitation, however, means the soil moisture is still 60mm to over 80mm above average (Figure 2), causing saturated soils and the propensity for flooding anytime precipitation occurs. Speaking of which, 0.25”-1.5” of additional precipitation is expected over the next 7 days with the lower amounts favoring the northwestern part of the state.  Could there be drying beyond that? The climate outlook for May 16-22 is indicating slight probabilities for below-normal precipitation in the northern counties, but the rest of the state is statistically uncertain to predict above- or below-normal precipitation with confidence. However, keep in mind that normal precipitation (based upon 1981-2010 data) during that[Read More…]

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No reason exists to expect drought anytime soon in Indiana, with much of the state remaining rather wet after last weekend’s showers. One good new development exists. The precipitation pattern that has existed since nearly January seems to be becoming a little less predictable, which could mean more periods of drier weather between fronts on the horizon. Another bit of good news exists in above normal temperatures predicted on both the 7-10 and 8-14 day forecasts, according to the Climate Prediction Center (https://www.cpc.ncep.noaa.gov/), which would allow for quicker drying of soils after any precipitation that does fall. Current growing degree days (base 50) for 2019, as of April 22, vary from 206 in Indianapolis to 322 in Evansville to 111 in Angola, marking a clear gradient in insect development and greening from south to north.  The entire state is now monitoring conditions for issuance of frost/freeze warnings from the NWS,[Read More…]

The rain seems to keep falling, barely providing time for things to dry out and start planting!  The last few weeks has experienced up to 2” above normal precipitation – particularly for west-central and southern Indiana, which is near the 125th-125th percentile. Warm days seem to be relatively few and far between, causing a slow start to growing degree-day (GDD) accumulations. While it is still early in the season, Indiana has only accumulated about 30-60 GDD units, with the few amounts to the north. Hard freezes (<= 28°F are still in recent memory, with the most recent hard freeze occurring just last week (April 1-3).  For April 8-16, precipitation forecasts are predicting 1.5”-2.5” of rain, with the higher amounts expected in the southern half of the state. There is still a 25-50% chance of a 32°F freeze occurring in southern counties and over a 90% chance of a freeze occurring[Read More…]

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March has been welcoming Indiana like a lion with below-normal temperatures and a combination of above and below normal precipitation (see figure). Snowfall accumulated across the state ranging from less than 1” in the southwest and northwest to as much as 3-4” in the southeast part of Indiana. This precipitation has caused drought to be absent across the state, but monthly and seasonal climate outlooks from the Climate Prediction Center (https://www.cpc.ncep.noaa.gov/) suggest an increasing chance of below normal precipitation over the next few months.  While temperatures will continue to gradually warm throughout spring, there are still significant risks for a late season freeze. The typical date of the last hard (28°F or less) freeze is late March in southern Indiana to late April in northeast Indiana. However, hard freezes have occurred as late as mid-April in the southeast counties into mid-May for northern Indiana. According to the Weather Prediction Center[Read More…]

Soil temperatures are critical for seed germination and are closely related to occurrences of some early season soilborne disease and pest problems on vegetable crops. Plant vegetable crops after the soil is warm enough ensure good seed germination and fast crop establishment. The figures below show daily average soil and air temperatures at  recorded at six locations (Figure 1) in Indiana from April 25 to May 8 that maybe helpful in assessing soil conditions for planting across the state. More information regarding recommended soil temperatures for vegetable planting can be found in the articles https://www.hort.purdue.edu/ext/ho-186.pdf  and https://vegcropshotline.org/article/seedcorn-maggots-and-wireworms/      

I have never had as many questions about how to use MELCAST as I did in 2015. The interest in this program is growing both here in Indiana and nationally. Read on to find out how to apply fungicides according to the weather and perhaps save money in the process. MELCAST (MELon disease foreCASTer) is a weather-based disease-forecasting program for cantaloupe and watermelon growers developed By Dr. Rick Latin at Purdue University. Instead of using a calendar based fungicide application program where one applies fungicides every 7 to 14 days, the MELCAST program lets growers apply fungicides when the weather is most conducive to disease. The diseases for which MELCAST may be used for are: Alternaria leaf blight, anthracnose and gummy stem blight. Details are listed below or in the extension bulletin, Foliar Disease Control Using MELCAST, BP-67-W. Download the bulletin at http://www.extension.purdue. edu/extmedia/BP/BP-67-W.pdf or contact Dan Egel for a[Read More…]

Winter is coming to a close in about a month, and the coldest of the days should be behind us at this point. Here in Indiana, El Nino usually points to a warmer, drier kind of winter.  With the past El Nino being considered one of the strongest on record, how much did the warm Pacific Ocean affect Indiana? The temperature and precipitation graphs around the state look somewhat similar to Figures 1 (Columbus) and Figure 2 (Lowell). High temperatures generally trended unseasonably warm right around the winter holiday, December 23 or 27, and around February 2. During both periods, record warm temperatures were set depending on location within the state.  The southwestern portion of the state had a four day record shattering streak of warm temperatures, while the more impressive warmth was experienced in February at some more northern locations (Figure 2). Going around the state, high temperatures this[Read More…]

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