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August 2010

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North Carolina Climate, the monthly newsletter of the State Climate Office of NC, covers a monthly climate summary for July with impacts to agriculture and water resources, information on tropical cyclone statistics, and a brief description of the new Local Storm Reports Database.
PDF version available for printing.

 

Climate Summary

Departures from Normal
Temperature and Precipitation by climate division
Departures from Normal for July 2010 - based on preliminary data.

July 2010 in North Carolina was warm and dry. While not quite as hot as in June 2010, temperatures ranked as one of the top 5 warmest on record for locations including Raleigh, Greensboro, Reidsville, Wilkesboro, Banner Elk, Lenoir, Hickory, Lincolnton, and Murphy. Combined with the heat of July were more dry conditions, especially across eastern NC and in far western counties. Central NC fared better, with much of the Yadkin River Basin above normal for the month. Statewide, temperatures ranked as the 10th warmest since 1895 and the 32nd driest on record.

MPE Precipitation
Precipitation for July 2010
Based on estimates from NWS Radar
Data courtesy NWS/NCEP

MPE Precipitation Percent of Normal
Precipitation for July 2010: Percent of Normal
Based on estimates from NWS Radar
Data courtesy NWS/NCEP

 

Impacts to Agriculture and Water Resources

Heat and dry conditions continued to cause problems for crops, especially corn in eastern NC and pastures in western NC. Reports from the NC Department of Agriculture suggest that the corn crop may be completely lost for some growers in eastern NC. Other reports suggest ranchers in western NC were turning to hay for feed early because pastures were dry and unproductive. Due to these impacts, drought designations were introduced in western and eastern counties. According to the US Drought Monitor, Moderate Drought (D1) was observed at the end of July in mountain counties and the northern coastal plain, while Severe Drought (D2) was also observed in a few northeastern counties.

So far, the hot and dry conditions have had less of an impact on water resources as compared to agricultural resources. While streams in areas of northeastern NC and western counties are dropping into drought ranges, most reservoirs and groundwater monitors report near normal conditions. The NC Drought Management Advisory Council continues to have weekly technical conferences to review conditions and make recommendations to the US Drought Monitor.

July 2010 Drought Monitor

 

It's Hurricane Season Again...

Government and University scientists expect this year's hurricane season to be busy. While we’ve already had 3 named storms so far, August – October is when most storms develop. To help provide information on historical tropical cyclones and their frequency, we’ve updated the Hurricanes section of our website. First introduced last year, these pages included a multitude of information on tropical cyclones, including a general climatology of storms in the Atlantic basin, basic definitions of tropical cyclone categories and the Saffir-Simpson scale, and an explanation of the conditions needed for storm development.

Tropical cyclone statistics for North Carolina have recently been updated to provide more accurate landfall and influence statistics using a geographic information system (GIS). Using a GIS, the pages now allow users to look at the frequency of storms that come within a range of distances and for all southeastern States. In addition, we are currently ingesting from the National Hurricane Center's FTP site to ensure our database contains a more accurate dataset. Below you will find NC tropical cyclone statistics for a 25- and 150-mile radius.


Tropical cyclone statistics for North Carolina, assuming a 25-mile storm radius

Tropical cyclone statistics for North Carolina, assuming a 150-mile storm radius

And while no one wishes for the damage that can come with tropical cyclones, it is important to remember that these storms are part of our climate and can bring beneficial rainfall. Indeed, preliminary results from an ongoing study suggest that since 1995, tropical cyclones contribute more than 15% to our warm season precipitation totals. Unfortunately, these storms can also bring severe weather and flooding. For all of our data hungry users out there, we’ve also just finished work on a new tool to track storm reports.

Local Storm Reports Database

The Local Storm Reports Database is a new, interactive product that provides easy access to storm report data from around the country. At the heart of the database are Local Storm Reports issued by the National Weather Service. These reports cover a variety of events, including thunderstorm and winter weather hazards, storm damage, high winds, flooding and heavy rain. Each report includes the event's date and time, location and a brief description.

There are two ways to search the Local Storm Reports Database: by date and by location.


A date search returns a map with events, color-coded by event type, plotted on it. Event types can be toggled on and off, and events can be filtered by the time of day.



A location search returns both a table of nearby events (displayed ten at a time) and a map showing these events. All columns of the table -- Event Type, Date, Time and Distance -- are sortable.



Clicking an event on the map of either the date search results or the location search results brings up an information box containing details about that event. Clicking the "more details" link in this box loads up a page containing the complete event information. This page includes links to the national radar and satellite images at the time of the event, along with that day's weather data from nearby COOP weather stations.


Data is currently available since May 2001. New events are added daily to ensure the Local Storm Reports database stays up-to-date.

 

 

Statewide Summary for July 2010

As part of the monthly newsletter, the SCO provides a basic summary of monthly conditions for ECONet stations. A daily version of this product for all locations that have an automated reporting station is available online at:
http://www.nc-climate.ncsu.edu/cronos/review

Station
Avg Daily
Max Temp
Avg Daily
Min Temp
Total
Rainfall
Avg Daily
Wind Speed
Max Daily
Wind Speed
Vector Avg
Wind
Boone, NC (BOON)
86.2° F
(+9.8° F)
1 mi
63.6° F
(+4.8° F)
1 mi
3.2 in
3.6 mph
24.8 mph
1.8 mph
West Southwest (256°)
Buckland, NC (BUCK)
92.5° F
(+4.3° F)
15 mi
65.1° F
(-0.8° F)
15 mi
1.8 in
2.2 mph
17.3 mph
1.3 mph
Southwest (220°)
Burnsville, NC (BURN)
85° F
(+3° F)
8 mi
61.9° F
(+4.1° F)
8 mi
5.5 in
2.8 mph
26.4 mph
1.4 mph
Northwest (311°)
Castle Hayne, NC (CAST)
89.7° F
(-0.3° F)
0 mi
72.3° F
(+2.1° F)
0 mi
4 in
3.6 mph
19.3 mph
1.8 mph
Southwest (229°)
Clayton, NC (CLAY)
91.4° F
(+1.5° F)
3 mi
71.3° F
(+2.4° F)
3 mi
2.9 in
4.1 mph
21.9 mph
2.4 mph
Southwest (235°)
Clinton, NC (CLIN)
91.1° F
(+1.2° F)
0 mi
71.5° F
(+1.6° F)
0 mi
2.4 in
4.3 mph
22.5 mph
3.1 mph
Southeast (141°)
Durham, NC (DURH)
92.8° F
(+4.2° F)
6 mi
69.2° F
(-0.9° F)
6 mi
4.2 in
2.6 mph
38 mph
1.6 mph
West Southwest (248°)
Fletcher, NC (FLET)
86.4° F
(+2.4° F)
0 mi
64.7° F
(+4.4° F)
0 mi
4.7 in
1.2 mph
19.7 mph
0.6 mph
North (357°)
Goldsboro, NC (GOLD)
91.6° F
(+0.2° F)
5 mi
71.6° F
(+0.6° F)
5 mi
4 in
2.9 mph
19.2 mph
1.6 mph
South (180°)
Hamlet, NC (HAML)
92.5° F
(+1.4° F)
4 mi
70.4° F
(+3.4° F)
4 mi
3 in
3.8 mph
23.7 mph
1.8 mph
Southwest (222°)
Hendersonville, NC (BEAR)
76.6° F
(-7.5° F)
7 mi
63.9° F
(+3.4° F)
7 mi
4.1 in
7.1 mph
29.3 mph
4.6 mph
West Northwest (296°)
High Point, NC (HIGH)
89.2° F
(+0.2° F)
2 mi
67.9° F
(+0.5° F)
2 mi
4 in
1.2 mph
20.5 mph
0.3 mph
West Southwest (257°)
Kinston, NC (KINS)
91.2° F
(-0.5° F)
0 mi
71.7° F
(+1.7° F)
0 mi
4.3 in
3.3 mph
22.1 mph
2.8 mph
Southwest (223°)
Laurel Springs, NC (LAUR)
80.9° F
(+1.2° F)
1 mi
60.2° F
(+4.3° F)
1 mi
6.5 in
2.4 mph
24.7 mph
0.8 mph
West Northwest (285°)
Lewiston, NC (LEWS)
92.8° F
(+3.3° F)
0 mi
70.3° F
(+2.8° F)
0 mi
1.3 in
2 mph
26.1 mph
1.4 mph
Southwest (229°)
Lilesville, NC (LILE)
92.5° F
(+2.3° F)
9 mi
71.4° F
(+1° F)
9 mi
2.1 in
3.4 mph
35.8 mph
2 mph
South Southwest (211°)
Mount Mitchell, NC (MITC)
69.1° F
(+1.2° F)
0 mi
56.7° F
(+3.9° F)
0 mi
2.4 in
10.9 mph
56.6 mph
9.5 mph
West Northwest (299°)
New London, NC (NEWL)
90.1° F
(+1.2° F)
2 mi
66.4° F
(-1.1° F)
2 mi
3.5 in
1.8 mph
27.1 mph
0.5 mph
West Southwest (244°)
Plymouth, NC (PLYM)
90.1° F
(0° F)
2 mi
68.5° F
(-1.1° F)
2 mi
0.1 in
4 mph
31.6 mph
1.8 mph
Southwest (228°)
Raleigh, NC (LAKE)
92.1° F
(+3.2° F)
0 mi
71.1° F
(+1.8° F)
0 mi
2.1 in
4.5 mph
30.8 mph
2.6 mph
West Southwest (246°)
Raleigh, NC (REED)
91.2° F
(+3.3° F)
3 mi
71.1° F
(+1.7° F)
3 mi
1.8 in
2.1 mph
20 mph
0.9 mph
West (277°)
Reidsville, NC (REID)
88.8° F
(+0.6° F)
0 mi
69.8° F
(+3.4° F)
0 mi
9 in
2.7 mph
31 mph
1.5 mph
West (272°)
Rocky Mount, NC (ROCK)
92.2° F
(+2.5° F)
0 mi
71.1° F
(+2.5° F)
0 mi
1.2 in
3.8 mph
23.6 mph
2 mph
Southwest (227°)
Salisbury, NC (SALI)
90.5° F
(+2.5° F)
0 mi
68.2° F
(+1.5° F)
0 mi
3.6 in
1.6 mph
24.6 mph
0.4 mph
West (278°)
Taylorsville, NC (TAYL)
88.9° F
67.2° F
5.5 in
1.2 mph
26.6 mph
0.2 mph
South Southeast (158°)
Wallace, NC (WILD)
91.2° F
(-0.1° F)
8 mi
70.8° F
(+0.6° F)
8 mi
4.2 in
4 mph
22.6 mph
2.1 mph
Southwest (222°)
Waynesville, NC (WAYN)
84.2° F
(+1.4° F)
0 mi
62° F
(+4.7° F)
0 mi
3.1 in
1 mph
17.3 mph
0.1 mph
North Northeast (22°)
Whiteville, NC (WHIT)
91.8° F
(-0.8° F)
0 mi
71.8° F
(+2.9° F)
0 mi
2.4 in
2.3 mph
20.5 mph
1.1 mph
Southwest (217°)
Williamston, NC (WILL)
91° F
(+2.6° F)
4 mi
70.4° F
(+1.3° F)
4 mi
1.8 in
3 mph
22.8 mph
1.7 mph
Southwest (236°)
Legend:
Parameter
Parameter's value approximated from hourly data.
( +/- Departure from normal )
Distance to reference station

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