District of ColumbiaSite status

Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Greensboro, NC (GSO), 00Z. Its levels are in the table below.
Observed Sounding at Greensboro, NC (GSO), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (56)
Greensboro, NC (GSO): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
978 mb270 m26.217.2210° 6 kt
965 mb389 m25.617.6—
941 mb610 m23.816.4225° 18 kt
925 mb761 m22.615.6235° 22 kt
909 mb914 m21.315.0240° 22 kt
877 mb1219 m18.713.8240° 20 kt
850 mb1490 m16.412.7250° 15 kt
817 mb1829 m13.710.9265° 12 kt
788 mb2134 m11.39.3290° 15 kt
759 mb2438 m9.66.9285° 19 kt
732 mb2743 m8.13.5285° 19 kt
705 mb3048 m6.6-0.3265° 25 kt
700 mb3111 m6.6-3.4260° 24 kt
685 mb3289 m7.0-16.0—
655 mb3658 m4.8-12.5240° 35 kt
631 mb3962 m2.6-13.0230° 38 kt
611 mb4216 m0.8-14.2—
600 mb4361 m0.4-19.6—
584 mb4572 m-1.0-20.3230° 41 kt
562 mb4877 m-3.0-23.3225° 42 kt
546 mb5110 m-3.1-32.1—
536 mb5255 m-3.7-30.7—
520 mb5486 m-4.8-34.9225° 45 kt
501 mb5791 m-7.0-34.2225° 47 kt
500 mb5800 m-7.1-34.1225° 47 kt
481 mb6096 m-9.2-32.7225° 47 kt
469 mb6297 m-10.7-31.7—
445 mb6706 m-13.0-26.5230° 49 kt
418 mb7178 m-15.7-20.5—
402 mb7473 m-17.9-23.9—
400 mb7510 m-18.1-24.1235° 63 kt
389 mb7717 m-19.7-24.7—
378 mb7925 m-21.0-26.8235° 60 kt
363 mb8230 m-23.3-28.1235° 66 kt
348 mb8534 m-25.3-31.2235° 63 kt
333 mb8839 m-27.5-33.8240° 63 kt
323 mb9068 m-29.5-34.5—
306 mb9449 m-31.7-42.4235° 64 kt
300 mb9590 m-32.7-44.7235° 62 kt
289 mb9851 m-34.9-42.9—
274 mb10218 m-38.1-45.1—
264 mb10472 m-39.9-47.9—
250 mb10840 m-42.1-53.1230° 70 kt
235 mb11258 m-44.7-55.7—
224 mb11582 m-46.1-61.0230° 70 kt
214 mb11887 m-47.4-66.0230° 74 kt
200 mb12330 m-49.3-73.3220° 68 kt
186 mb12802 m-52.8-75.5215° 73 kt
169 mb13411 m-57.5-77.7220° 68 kt
153 mb14021 m-61.9-79.5225° 71 kt
150 mb14160 m-62.9-79.9220° 68 kt
139 mb14630 m-65.1-81.1215° 66 kt
126 mb15240 m-67.6-82.3230° 60 kt
114 mb15820 m-68.1-81.1—
103 mb16425 m-71.1-85.1—
100 mb16600 m-71.7-85.7240° 31 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.