FROST Update for TN, KY and MD…SC Looks Frost-free…AR and MO Update (6pm, Sat. April 5, 2014)

— Written By

South Carolina is looking fairly safe, but growers in foothills and higher elevations should set frost alarms at 37-38 F to play it safe.

Here are minimum temps for across SC tomorrow morning: SC Min Temp Map: SC AWIS Apr 5 to 12

7daytemp.se.2

Fig. 1. The lime green areas up in NC Mountains are at definite risk for frost Sunday morning, but I would exercise caution in northwest section of SC.

Tennessee is going to have issues with frost tomorrow morning. For example, in Clarksville it will frost at 4 a.m.

clarksville

Tennessee minimum temps: TN AWIS Apr 5 to 12

Detailed 5-day for these TN locations (you can open these pdf files and see what time AWIS may be forecasting frost on Sunday morning):

5-DAY DETAILED HOURLY WEATHER FORECASTS 

Kentucky – frost likely in Western KY on Sunday morning!

AWIS Weather Services, Inc. Western Kentucky Frost/Freeze Forecast
Produced at  303 p.m. CDT on Sat Apr  5 2014

... Forecast for Tonight ... Southwest Kentucky                      
NWS Fcst Zones 1-13                               
****  FROST LIKELY  ****

Lowest Temperatures:      37 - 40
Murray Min                  40 
Range Dewpoint Temps:     29 - 35
Range Wetbulb  Temps:     36 - 42
AVG Wind Direction/Speed:   V  2     Long Periods of Calm 
AVG Sky Condition:     Partly Cloudy

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   50 - 53   42 - 44   36 - 40   44 - 47   53 - 55   52 - 54
--------

Grayson County Area                     
NWS Fcst Zones 23-24,26-28,61-63                  

**** NEAR FREEZING COLD LOCATIONS  ****
****  FROST LIKELY  ****

Lowest Temperatures:      35 - 38
Leitchfield Min             37 
Range Dewpoint Temps:     26 - 35
Range Wetbulb  Temps:     35 - 42
AVG Wind Direction/Speed:  NE  3     Long Periods of Calm 
AVG Sky Condition:     Partly Cloudy

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   49 - 52   39 - 42   35 - 38   41 - 44   50 - 52   49 - 51
--------

For more detailed information visit www.awis.com or call 888-798-9955. Copyright 2014 AWIS Weather Services, Inc. All rights reserved.

AWIS minimums for state of KY: KY AWIS Apr 5 to 12

Check out these detailed tables for FROST times in KY tomorrow morning

5-DAY DETAILED HOURLY WEATHER FORECASTS 

Maryland – see the minimum temp map for MD and Mid-Atlantic region. There is widespread potential for frost Sunday morning in Maryland.

7daytemp.at.2 (1)

In Aberdeen, MD,  the FROST will likely occur at 4 a.m. Sunday. What is interesting is how high the winds will be at this hour (7 mph). My “gut” is that winds may subside and this could then be a substantial frost in morning. Growers in MD should be prepared to protect their crop from frost damage in the morning by appliying row covers NOW (late afternoon/early evening), or being prepared to use sprinkler irrigation. From the standpoint of having to run sprinkler irrigation, note that the  the air is relatively moist, and so there should not be issues with evaporative cooling and “cold jolts” at start up. In the table below note the depwoints are in upper 20s, and wet bulb of 31 will be reached at around 4 a.m. At about this time, you should be seeing “ice crystalsl” forming in the low parts of the field (on weed vegetation, layflat, rolled up row cover), and this is your “cue” to start sprinkling. Run until ice is nicely melting after sunset.

aber

In Frederick MD the frost will occur earlier – about 2 a.m. The frost will occur as soon as those winds die down!

frederick

Maryland growers can refer to these AWIS locations for a very detailed forecast (including frost times):

5-DAY DETAILED HOURLY WEATHER FORECASTS 

Maryland growers in other locations can refer to this minimum temp table for the whole state: MD Awis Apr 5 to 12

Arkansas – looks fairly safe. Be cautious in baby blue areas 38-40.

Minimum temps for the whole state: AR AWIS Apr 5 to 12

7daytemp.ar.1

AWIS Weather Services, Inc. Arkansas Frost/Freeze Forecast
Produced at  504 p.m. CDT on Sat Apr  5 2014

... Forecast for Tonight ... Northwest Arkansas                      
NWS Fcst Zones 1-3, 10-12, 19-21                  
**** LITTLE IF ANY FROST **** 

Lowest Temperatures:      38 - 42
Fayetteville_AG Min         41 
Range Dewpoint Temps:     26 - 39
Range Wetbulb  Temps:     36 - 43
AVG Wind Direction/Speed:  SE  4     Long Periods of Calm 
AVG Sky Condition:     Mostly Cloudy

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   40 - 43   37 - 43   34 - 40   46 - 50   50 - 54   51 - 55
--------

North Central Arkansas                  
NWS Fcst Zones 4-7, 13-16, 22-24                  
**** LITTLE IF ANY FROST **** 

Lowest Temperatures:      37 - 41
Mountain_Home_Ag Min        40 
Range Dewpoint Temps:     26 - 38
Range Wetbulb  Temps:     36 - 43
AVG Wind Direction/Speed:  SE  5     Long Periods of Calm 
AVG Sky Condition:     Mostly Cloudy

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   41 - 47   39 - 42   35 - 40   44 - 50   47 - 54   50 - 54
--------

Northeast Arkansas                      
NWS Fcst Zones 8-9, 17-18, 25-28                  
**** LITTLE IF ANY FROST **** 

Lowest Temperatures:      40 - 43
Alicia Min                  41 
Range Dewpoint Temps:     32 - 38
Range Wetbulb  Temps:     39 - 43
AVG Wind Direction/Speed:  NE  5     Long Periods of Calm 
AVG Sky Condition:     Mostly Cloudy

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   48 - 50   43 - 46   39 - 42   46 - 49   52 - 55   52 - 55
--------

West Central Arkansas                   
NWS Fcst Zones 29-30, 37-38, 40-41                
**** LITTLE IF ANY FROST DUE TO CLOUDS **** 

Lowest Temperatures:      40 - 45
Fort_Smith_AR_AP Min        43 
Range Dewpoint Temps:     31 - 41
Range Wetbulb  Temps:     42 - 44
AVG Wind Direction/Speed:  NE  5     Long Periods of Calm 
AVG Sky Condition:         Cloudy   

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   41 - 46   39 - 46   36 - 41   43 - 51   48 - 55   51 - 57
--------

Central Arkansas                        
NWS Fcst Zones 31-33, 39, 42-46, 54-56            
**** LITTLE IF ANY FROST DUE TO CLOUDS **** 

Lowest Temperatures:      38 - 45
Searcy Min                  42 
Range Dewpoint Temps:     32 - 42
Range Wetbulb  Temps:     39 - 44
AVG Wind Direction/Speed:  NE  4     Long Periods of Calm 
AVG Sky Condition:         Cloudy   

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   44 - 51   41 - 47   36 - 43   45 - 51   49 - 55   52 - 58
--------

East Central Arkansas                   
NWS Fcst Zones 34-36, 47-49, 57-58                

*** No Frost And/Or Freeze Danger Tonight ***

Lowest Temperatures:      42 - 45
Marianna Min                42 

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   49 - 53   44 - 48   41 - 44   48 - 51   53 - 57   55 - 58
--------

Southwest Arkansas                      
NWS Fcst Zones 50-52, 59-60, 70-71                

*** No Frost And/Or Freeze Danger Tonight ***

Lowest Temperatures:      41 - 47
Hope Min                    43 

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   43 - 49   41 - 47   37 - 43   44 - 50   50 - 56   52 - 58
--------

South Central Arkansas                  
NWS Fcst Zones 53, 61-62, 66-67, 72-73            

*** No Frost And/Or Freeze Danger Tonight ***

Lowest Temperatures:      43 - 47
Camden Min                  44 

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   47 - 49   43 - 46   38 - 41   46 - 48   52 - 55   53 - 56
--------

Southeast Arkansas                      
NWS Fcst Zones 63-65, 68-69, 74-75                

*** No Frost And/Or Freeze Danger Tonight ***

Lowest Temperatures:      44 - 47
Monticello_AR_AP Min        47 

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   48 - 53   44 - 48   39 - 44   46 - 52   52 - 57   54 - 57
--------

For more detailed information visit www.awis.com or call 888-798-9955. Copyright 2014 AWIS Weather Services, Inc. All rights reserved.

Missouri

7daytemp.mw.3

AWIS for Missouri (all areas): MO AWIS Apr 5 to 12

AWIS Weather Services, Inc. Missouri Frost/Freeze Forecast
Produced at  504 p.m. CDT on Sat Apr  5 2014

... Forecast for Tonight ... Southeast Missouri Delta                
NWS Fcst Zones 110-115                            
****  FROST LIKELY  ****

Lowest Temperatures:      37 - 42
Kennett Min                 40 
Range Dewpoint Temps:     29 - 35
Range Wetbulb  Temps:     36 - 41
AVG Wind Direction/Speed:  NE  3     Long Periods of Calm 
AVG Sky Condition:     Partly Cloudy

Extended Forecast: Range of Lowest Min Temperatures in the Above Zones
Min Temps Valid For Morning of Given Date (May NOT include ALL cold pockets)

  04/07/14  04/08/14  04/09/14  04/10/14  04/11/14  04/12/14
  --------  --------  --------  --------  --------  --------
   45 - 47   40 - 44   37 - 42   44 - 51   50 - 54   51 - 56
--------

For more detailed information visit www.awis.com or call 888-798-9955. Copyright 2014 AWIS Weather Services, Inc. All rights reserved.

Good luck!

Dr. E. Barclay Poling
Interim Executive Director, NC Strawberry Association Inc.
& Professor Emeritus (Strawberry Plasticulture Researcher)
Department of Horticultural Science
Campus Box 7609, 162A Kilgore Hall
NC State University
Raleigh, NC 27695-7609
A pessimist sees the difficulty in every opportunity, an optimist sees
the opportunity in every difficulty.
Winston Churchill, Prime Minister of England