The Performance of the National Weather Service Heat Warning System against Ground Observations and Satellite Imagery
Table 1
Atlanta weather station details on the number of normal (“Norm”) and Advisory (“Heat”) days during the summer of 2011 and 2012. The total number of false positives (no station hazard with NWS advisory) and false negatives (station hazard with no NWS Advisory) is also provided to give an idea of the agreement between the station and the NWS Advisories for that county.
Metro County Station
Land cover (NLCD 2011)
2011
2012
False pos.
False neg.
Obs
Norm
Heat
%
Norm
Heat
%
Atlanta
Clayton
KGAATLAN58
Developed high intensity
146
6
4%
2
4
152
ATLAirport
Developed low intensity
153
0
0%
151
2
1%
6
0
306
Cobb
KGAMARIE40
Deciduous forest
120
26
18%
126
14
10%
2
34
286
KGAACWOR9
Developed open space
151
2
1%
134
18
12%
3
15
305
KGAPOWDE3
Developed open space
142
11
7%
148
5
3%
2
10
306
KGAMABLE1
Evergreen forest
145
8
5%
149
4
3%
3
7
306
MD0601
Developed open space
144
7
5%
146
5
3%
2
6
302
KGAMARIE25
Developed open space
124
7
5%
1
4
131
KGAMABLE3
Developed open space
142
7
5%
144
3
2%
2
4
296
KGAMARIE43
Developed low intensity
113
5
4%
150
3
2%
2
2
271
KGAMARIE42
Developed open space
148
3
2%
2
1
151
KGAMARIE34
Developed low intensity
121
0
0%
2
0
121
KGAMARIE35
Developed open space
148
0
0%
134
3
2%
5
0
285
KGAMARIE20
Developed low intensity
153
0
0%
150
3
2%
5
0
306
KGAROSWE4
Developed open space
152
0
0%
120
2
2%
6
0
274
KTGAMARI2
Deciduous forest
132
2
1%
2
0
134
KGAMARIE46
Developed medium intensity
134
2
1%
2
0
136
KGAKENNE16
Developed open space
148
2
1%
2
0
150
KGAKENNE15
Developed low intensity
120
2
2%
149
2
1%
4
0
273
KGAMARIE39
Woody wetlands
148
2
1%
150
2
1%
4
0
302
KGASMYRN2
Developed low intensity
128
0
0%
145
0
0%
6
0
273
MAT950
Developed open space
147
0
0%
132
0
0%
7
0
279
Dekalb
KGADECAT8
Developed open space
128
25
16%
136
17
11%
2
36
306
KGAAVOND3
Developed high intensity
128
24
16%
2
22
152
KGAAVOND4
Developed low intensity
147
2
1%
2
0
149
KGAATLAN52
Evergreen forest
149
0
0%
148
0
0%
8
0
297
Fulton
KGAATLAN41
Developed low intensity
96
53
36%
114
24
17%
2
71
287
KGAATLAN70
Developed open space
77
39
34%
0
35
116
KGAALPHA10
Developed low intensity
128
22
15%
135
18
12%
1
33
303
KGAATLAN67
Deciduous forest
127
26
17%
1
23
153
KGAROSWE5
Developed low intensity
117
9
7%
131
13
9%
1
17
270
MD5335
Developed open space
137
16
10%
4
16
153
KGAATLAN56
Developed open space
125
13
9%
2
12
138
KGAJOHNS2
Developed low intensity
143
10
7%
147
5
3%
4
12
305
KGAATLAN54
Developed medium intensity
139
11
7%
129
2
2%
4
9
281
KGAJOHNS5
Developed open space
151
2
1%
148
5
3%
3
2
306
KGAATLAN16
Developed low intensity
148
4
3%
148
3
2%
3
2
303
KGAATLAN37
Developed low intensity
145
4
3%
149
2
1%
4
2
300
MAT910
Developed medium intensity
141
3
2%
143
3
2%
3
1
290
KGAATLAN40
Developed low intensity
147
4
3%
149
2
1%
3
1
302
KGAATLAN57
Developed open space
149
3
2%
150
2
1%
4
1
304
KGAALPHA16
Developed open space
119
0
0%
0
0
119
KGAPALME2
Deciduous forest
125
2
2%
2
0
127
KGAATLAN50
Developed open space
148
2
1%
138
2
1%
4
0
290
KGAATLAN49
Developed medium intensity
141
0
0%
149
0
0%
8
0
290
KGAMOUNT2
Developed open space
147
0
0%
153
0
0%
8
0
300
Gwinnett
KGALILBU10
Evergreen forest
120
28
19%
112
36
24%
1
57
296
KGADULUT7
Developed open space
114
34
23%
0
30
148
KGALAWRE13
Developed open space
131
22
14%
140
5
3%
5
24
298
KGALOGAN12
Evergreen forest
138
13
9%
127
5
4%
2
13
283
KGASTONE4
Developed low intensity
147
6
4%
1
3
153
KGALILBU11
Developed low intensity
122
4
3%
112
3
3%
3
2
241
KGALILBU4
Developed low intensity
153
0
0%
151
2
1%
6
0
306
KGALILBU8
Developed open space
151
2
1%
151
2
1%
4
0
306
KGALAWRE6
Developed open space
151
0
0%
152
0
0%
8
0
303
KGANORCR12
Developed low intensity
144
2
1%
151
0
0%
6
0
297
KGANORCR14
Developed open space
148
0
0%
121
0
0%
8
0
269
Stations within each county are sorted by number of false negatives.
