Coded City Forecast(CCF, FPUS44)
An abbreviated forecast transmitted twice a day by 4:00am/pm. Issued before the zone forecast, it provides a quick overview of the forecast for DFW and Waco. The CCF will have a different sequence depending upon the transmission time. The forecast takes the following format...
4:00am...
LLL F1F2 max/min max/min max FFP1P2P3
4:00pm...
LLL F2F3 min/max min/max min FFP2P3P4 |
A description of each part of the coded cities forecast follows...
- LLL
- Three-letter station identifier with forecasts for Dallas/Fort Worth (DFW) and Waco (ACT).
- F1F2 or F2F3
- One-word forecasts. F1, F2, and F3 are single letters, which represent one-word forecasts for the predominate weather expected during daylight hours.
- F1 is today
- F2 is tomorrow.
- F3 is the day after tomorrow.
The following list gives the corresponding letters and weather elements.
| A |
Fair |
J |
Snow Showers |
S |
Snow |
| B |
Partly Cloudy |
K |
Smoke |
T |
Thunderstorms |
| C |
Cloudy |
L |
Drizzle |
U |
Sunny |
| D |
Dust |
M |
Snow Showers |
V |
Clear |
| E |
Mostly Cloudy |
N |
Windy |
W |
Rain Showers |
| F |
Foggy |
O |
Rain or snow Mixed |
X |
Sleet |
| G |
Very Hot or Hot/Humid |
P |
Blizzard |
Y |
Freezing Rain |
| H |
Haze |
Q |
Blowing Snow |
Z |
Freezing Drizzle |
| I |
Very Cold/Wind Chill |
R |
Rain |
|
- max/min or min/max
- Temperatures (°F) are encoded with three digits. For example, 52°F is encoded 052, 112°F is encoded 112, 7°F is encoded 007. Temperatures below zero are preceded by the digit "9". For example, -15°F is encoded 915.
- FF
- The forecaster's identification number with digits 01 through 99.
- P1P2P3 or P2P3P4
- Probability of Precipitation (POP). Probability values for three 12-hour periods based on the transmission time.
P1 is today
P2 is tonight
P3 is tomorrow
P4 is tomorrow night
If the probability forecast is 50%, the corresponding one-word forecast will normally be for the precipitation event. However, if there is a high POP that applies very early in the day, then a non-precipitation event would likely be forecast. |
The code for probability values is as follows...
| Percent |
Code |
| near zero |
0 |
| 5 |
- |
| 10 |
1 |
| 20 |
2 |
| 30 |
3 |
| ...etc... |
| 90 |
9 |
| near 100 |
+ |
|
Example
FPUS44 KFWD 150921
CCFFTW
DFW TW 090/053 077/046 080 827-0
ACT TW 092/057 079/045 081 82620 |
Interpretation of the example for DFW...
The forecast today is a 70% chance of thunderstorms at DFW Airport with a maximum temperature of 90°F, the minimum tonight will be 53°F with a 5% chance of precipitation, and the maximum tomorrow will be 77°F under windy conditions. The minimum temperature tomorrow night will be 46°F with a maximum the following day of 80°F.
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