Update on Frost Situation This Morning and Outlook for Sunday (10am, Sat., 4/8/17)

— Written By Barclay Poling
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temperature mapsminimum temperature mapFigs. 1a – 1b. (1a) Cronos temperatures across the region at about 6:40 a.m.; (1b) The AWIS minimum temperature map posted yesterday – the relatively low temperatures recorded in Eastern NC and coastal areas were perhaps the biggest surprise!

Good morning!

This was a serious event!  I appreciate all the early morning feedback from  from growers in VA-NC-SC:

VA – “ground frost in Hanover”…”had turn on sprinklers at 2:30 a.m. at farm west of Richmond”

NC – pretty widespread frost…

  • Sanford – “pretty good frost here in Sanford this morning…think it was about 34 minimum”
  • Greensboro – “it got down to 33..frost in low lying areas…winds died down at 9 p.m.…can’t trust those darn wind forecasts” (Editor’s note:  I spoke with this grower at 6 p.m. Friday evening and we discussed how AWIS was showing winds of 7-9 mph through this morning?)
  • Faison – “spotty frosts…we did apply row covers…did not water”
  • Seven Springs – “definitely had frost here”

Easley, SC – Eric Hunter:

  • 31 here (7:40 a.m.). Frost on covers. Air underneath is 40. Did not use drip. Skybit showing minimum 35 for Sunday
  • Please see Clyde Gurosik’s update at bottom of advisory (I did not see it until a minute ago)

people holding tray of harvested berriesFig. 2. Even though a lot of blooms were lost to the March Freezes, the really good news is that just about everyone is picking their earliest crop ever, and FLAVOR is AMAZING!!! This photo of Tina and John Gross in Sanford shows what a great crop of Camarosa strawberries is being picked North Carolina’s Sandhills region. Growers in piedmont areas like Greensboro will start picking good volumes of berries in the coming week. In speaking with Kenneth Rudd last night (Greensboro), he said he could never remember better flavor on Albion in the early season. He also had some questions about plants for next season, as this week and next is when nursery growers need to make their planting decisions! I would encourage all growers to take a moment this week to “think about” their plant requirements for this fall.

We’ve got one more night to go!

By all means,  enjoy the great weather on tap for today. Unfortunately, there is a pretty good chance of frost again tomorrow morning (Sunday). The minimum temperatures tonight could actually be lower than this morning. I just examined the situation over in Kenansville, NC – this area may have dodged a bullet last night, but I am not so sure about tonight? First, winds will become perfectly still (0 mph) by about 8 p.m. (2000), skies are clear, and the air temp min for Sunday is 35 (it was 36 this morning). If you open the pdf for Kenansville  you will see AWIS is showing “F”(rost) at 5 a.m. (sunrise is 6:48 a.m.). Dewpoints are high (35 at 5 a.m.). If you are using row cover protection, be sure to get your picking done earlier in the day today, and re-apply covers in mid-to-late afternoon to get maximum heat bulid-up. As a precaution, you might want to consider doing some drip irrigation at around 5 a.m. and run until a little after sunrise. Again, there is this nagging concern about getting a frost beneath the cover with such moist air.

Good luck!

Mulit-state AWIS forecast data for Sat/Sun (April 8/9)

Maryland MD Temp Outlook

10-DAY DETAILED HOURLY WEATHER FORECASTS

Aberdeen Andrews_AFB Annapolis_Naval Baltimore_Sci_Ce
Baltimore/Wash Cambridge/Dorche College_Park_AP Cumberland_AP
Easton_MD Fort_Meade Frederick_MD Gaithersburg_AP
Hagerstown_AP Leonardtown Middle_River Oakland_MD_AP
Ocean_City_AP Patuxent_River Salisbury Stevensville_AP
St_Inigoes/Webst Washington_DC_AP Westminster_AP

Virginia VA Temp Outlook

Virginia temperature map

10-DAY DETAILED HOURLY WEATHER FORECASTS

Abingdon Ashland_VA Charlottesville Chesapeake-Ches
Culpeper Danville Dublin/New_Riv Emporia_VA
Farmville Fentress_Naval_A Fort_Belvoir/Da Fort_Eustis/Fel
Franklin/J_B_Ro Hillsville Hot_Springs/Ing Jonesville_AP
Langley_AFB Leesburg/Godfre Louisa-Louisa_C Lynchburg
Manassas_Muni(A Marion/Wythev Martinsville Mecklenburg/Bru
Melfa/Accomack Newport_News Norfolk_Hampton_ Norfolk_NAS
Norfolk_VA Oceana Orange_VA Petersburg_(AWO
Quantico Richlands_AP Richlands_VA Richmond
Richmond_Chester Roanoke Shannon_Arpt Stafford_AP_VA
Staunton-Shenan Suffolk-Suffolk Tappahannock_AP Virginia_Tech_A
Wakefield_AP Wallops_Island Warrenton_Fauqui Washington_Dulle
West_Point_VA Williamsburg_VA Winchester_Rgnl Wise/Lonesome_P

Example Skybit for farm west of Richmond (8 a.m. this morning)

strawberry canopy forecast data

North Carolina NC Temp OutlookNC Frost/freeze forecast

AWIS North Carolina Frost/Freeze Forecast (a unique product for NC growers)

AWIS Weather Services, Inc. North Carolina Frost/Freeze Forecast
Produced at  504 a.m. CDT on Sat Apr  8 2017

... Forecast for Tonight ... Northeast NC Coast                      
Currituck/Camden/Pasquotank/Tyrrell Counties      

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

Lowest Temperatures:      41 - 48
Elizabeth_City Min          41 

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   50 - 57   55 - 61   57 - 64   54 - 61   53 - 60   46 - 52
--------

East Central/SE NC Coast                
Carteret/Pamlico Counties                         
** PATCHY FROST COLDEST LOCATIONS **

Lowest Temperatures:      40 - 43
Morehead_City Min           43 
Range Dewpoint Temps:     32 - 40
Range Wetbulb  Temps:     38 - 44
AVG Wind Direction/Speed:   V  2     Long Periods of Calm 
AVG Sky Condition:         Clear    

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   48 - 52   53 - 56   56 - 58   56 - 58   54 - 58   49 - 51
--------

Southeast NC                            
NWS FORECAST ZONES 87-90,96-101                   
** PATCHY FROST COLDEST LOCATIONS **

Lowest Temperatures:      38 - 43
Elizabethtown Min           40 
Range Dewpoint Temps:     32 - 40
Range Wetbulb  Temps:     38 - 47
AVG Wind Direction/Speed:   V  2     Long Periods of Calm 
AVG Sky Condition:         Clear    

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   47 - 51   51 - 56   54 - 58   54 - 58   53 - 58   45 - 51
--------

North-Central NC                        
Franklin County Area                              

**** NEAR FREEZING COLD LOCATIONS  ****
****  WIDESPREAD FROST   ****

Lowest Temperatures:      35 - 42
Louisburg Min               35 
Range Dewpoint Temps:     31 - 35
Range Wetbulb  Temps:     35 - 43
AVG Wind Direction/Speed:   V  2     Long Periods of Calm 
AVG Sky Condition:         Clear    

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   42 - 51   48 - 55   52 - 59   49 - 57   49 - 55   41 - 48
--------

North/Central NC                        
Alamance County Area                              
****  WIDESPREAD FROST   ****

Lowest Temperatures:      37 - 42
Graham_AG Min               40 
Range Dewpoint Temps:     26 - 35
Range Wetbulb  Temps:     34 - 43
AVG Wind Direction/Speed:   V  2     Long Periods of Calm 
AVG Sky Condition:         Clear    

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   44 - 49   48 - 54   54 - 59   52 - 57   50 - 55   43 - 47
--------

South/Central NC                        
Richmond County Area                              
** FROST COLDEST LOCATIONS **

Lowest Temperatures:      38 - 42
Ellerbe Min                 40 
Range Dewpoint Temps:     26 - 37
Range Wetbulb  Temps:     38 - 44
AVG Wind Direction/Speed:  SW  3     Long Periods of Calm 
AVG Sky Condition:         Clear    

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   46 - 49   51 - 54   54 - 56   54 - 57   53 - 55   46 - 48
--------

Interior/EC-SE NC                       
Wayne County Area                                 
** PATCHY FROST COLDEST LOCATIONS **

Lowest Temperatures:      38 - 42
Goldsboro_AG Min            41 
Range Dewpoint Temps:     32 - 40
Range Wetbulb  Temps:     41 - 44
AVG Wind Direction/Speed:   V  1     Long Periods of Calm 
AVG Sky Condition:         Clear    

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   47 - 49   51 - 54   53 - 56   53 - 58   52 - 58   45 - 49
--------

For more detailed information visit www.awis.com or call 888-798-9955. Copyright 2017 AWIS Weather Services, Inc. All rights reserved.

10-DAY DETAILED HOURLY WEATHER FORECASTS

Ahoskie-Tri-Cou Albemarle_AP Andrews Asheboro
Asheville_Munic Beaufort-Michae Boone_NC Burlington-Burl
Cape_Hatteras_AG Chapel_Hill-Hor Charlotte Cherry_Point
Clinton_NC Concord_NC Currituck_NC Edenton-Northea
Elizabeth_City Elizabethtown_NC Erwin-Harnett_C Fayetteville_AP
Fort_Bragg/Simm Franklin/Macon_C Gastonia-Gaston Goldsboro_AFB
Goldsboro_NC Greensboro Greenville_AP_NC Hickory
Jacksonville Jacksonville_(A Jefferson_AP_NC Kenansville-Dup
Kill_Devil_Hills Kinston_AP Lexington-David Lincolnton_AP
Louisburg_NC Lumberton_AP_NC Mackall_AAF Manteo/Dare_Co
Maxton Mcalf_Bogue_Fiel Monroe_AP_NC Morganton-Morga
Mount_Airy-Moun New_Bern North_Wilkesbor Oxford_NC
Piney_Island_Bom Pope_AFB Raleigh-Durham Reidsville_AP
Roanoke_Rap_AP Roanoke_Rapids_R Rockingham_NC Rocky_Mount-Wils
Roxboro_AP Rutherfordton Salisbury-Rowan Sanford_NC
Shelby_AP_NC Smithfield_AP Southern_Pines Southport_NC
Statesville-Sta Tarboro_AP Wadesboro_AP Washington-Warr
Whiteville_NC Wilmington_AP_NC Winston-Salem

South Carolina SC Temp Outlook

SC Temperature forecast Southeast US temperature forecast

10-DAY DETAILED HOURLY WEATHER FORECASTS

Aiken_AP Anderson_Co_Air Barnwell_AP Beaufort_Cnty_AP
Beaufort_SC Bennettsville_Je Camden_AP Charleston_Exec_
Charleston_Muni Cheraw_AP Chester_AP Clemson-Clemson
Columbia-Columb Columbia/McEnti Columbia_Metro Conway_AP
Darlington Florence_SC Georgetown_AP_SC Greenville_Donal
Greenville_Down Greenville-Spart Greenwood-Green Hartsville_AP
Hilton_Head_AP Kingstree_AP Lancaster-McWhir Laurens_AP
Manning_AP Marion_AP_SC Moncks_Corner_AP Mount_Pleasant_A
Myrtle_Beach Newberry_AP North_Myrtle_Be Orangeburg-Oran
Pickens_AP Rock_Hill Spartanburg_Down Summerville_AP
Sumter_AP Sumter_SC Walterboro_AP Winnsboro_AP

Georgia GA Temp Outlook

GA temperature map10-DAY DETAILED HOURLY WEATHER FORECASTS

Albany_Municipa Alma/Bacon_Co Americus_AP Athens_Municipa
Atlanta/DeKalb Atlanta/Fulton Atlanta_Intl_Ar Atlanta_Paulding
Augusta/Bush_Fi Augusta_Daniel_F Bainbridge_GA Blakely_AP
Brunswick_GA Brunswick/Glync Canton_GA Carrollton_AP
Cartersville_AP Claxton_AP Columbus_GA Covington_GA_AP
Dalton-Dalton_M Douglas_Muni Dublin/WHBarron Fitzgerald_AP
Fort_Benning Ft_Stewart/Wrig Gainesville_AP_G Greensboro_GA
Homerville_AP Hunter_(AAF) Jesup_AP La_Grange
Lakeland Lawrenceville_AP Macon_AP Marietta
Marietta/Cobb Milledgeville_AP Moultrie_Muni_AP Newnan-Newnan_C
Peachtree_City Rome_GA Savannah Statesboro_GA
Swainsboro_AP Sylvania_AP_GA Thomaston_AP Thomasville_AP
Thomson_GA Tifton_AP Valdosta Valdosta/Moody
Vidalia Warner_Robins_A Washington_GA Washington_GA
Waycross_AP Winder_AP

Kentucky KY Temp Outlook

10-DAY DETAILED HOURLY WEATHER FORECASTS

Bowling_Green Covington Danville-Powell_ Fort_Campbell
Fort_Knox/Godma Frankfort_AP Glasgow_KY Henderson_City
Jackson_KY Lexington_KY London_Corbin Louisville_AP
Louisville/Bowm Middlesboro_AP Monticello_KY_AP Murray_AP
Owensboro_AP Paducah Richmond_Madison Somerset(AWOS)
AWIS Weather Services, Inc. Western Kentucky Frost/Freeze Forecast
Produced at  503 a.m. CDT on Sat Apr  8 2017

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

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

Lowest Temperatures:      49 - 54
Murray Min                  51 

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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   56 - 60   56 - 58   51 - 54   53 - 55   53 - 55   50 - 52
--------

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

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

Lowest Temperatures:      43 - 49
Leitchfield 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)

  04/10/17  04/11/17  04/12/17  04/13/17  04/14/17  04/15/17
  --------  --------  --------  --------  --------  --------
   51 - 56   53 - 56   49 - 53   49 - 53   50 - 52   45 - 49
--------

For more detailed information visit www.awis.com or call 888-798-9955. Copyright 2017 AWIS Weather Services, Inc. All rights reserved.

SC Report

Friends,

Please see the attached photos with appropriate captions. Canopy temperature dropped to 30F and all crops were totally protected with high capacity, solid set overhead irrigation.

4938 – Frosty ground around our fields 4/8/17
4947  Overhead irrigation protection of MASTER STRAWBERRIES, and the MASTERS golfers teeing off in the background where the fog is lifting on Washington Road.
4929  High rise, overhead irrigation protection of trellised hybrid blackberries, with frost protection of strawberries and staked tomatoes in the background.
4942 – 6 acres of high trellis, hybrid blackberries in bloom being frost protected with overhead irrigation.
4951 (will include in later advisory)- These Camarosa strawberries are in their 6th solid week of production and going strong. Please note the buried, solid set irrigation plays a major role in reliable, cost effective frost protection. The row covers and rock bags also pictured are more of an “insurance policy” for limited protection and special challenges like an airborne freeze. They will provide “limited protection” of about 8F, whereas the overhead irrigation system can provide protection of 20+ degrees F. When integrated together they can provide really excellent protection for most frost/freeze scenarios.
4935 (will include in later advisory)- Early summer squash, staked Parks Whopper tomatoes, pickles and strawberries (background) all being cost effectively frost protected together with solid set, overhead irrigation. We can’t pull row covers over staked tomatoes or high trellis hybrid blackberries, but overhead irrigation protects all very well.
4949 (will include in later advisory)- High capacity diesel pumping units are great for reliable, cost effective frost protection. They also continue to protect during storm related power losses when there is no electrical service. Unfortunately, they cost about $25K each and Berry Plantation uses 2, plus a back-up spare.
Hope this gives you a picture of a FROSTY MASTERS SATURDAY, START.
Sincerely,
Clyde

frost on foliageirrigationirrigating fieldsirrigating fieldsrows of strawberry plantsirrigatingirrigating